Is300 misfire Sep 18, 2010 · ES - 5th Gen (2007-2012) - Ignition coil malfunction, misfire in all 6 cylinders. nothing sounds put of the ordinary etc. what you listed for p0302 could be reasons for the misfire. In my experience it's usually a coil or compression but can be plugs or wires if they are severly worn out. Stored DTCs- Lean mixture bank 1, misfires in multiple cylinders. See full list on 700r4transmissionhq. P0303 will often be accompanied by codes P0301, P0302, P0304, P0305, etc… These codes indicate a misfire in cylinders one, three, four, and five, respectively. Can anybody shed a light on this now they are saying it needs further investigation Jun 25, 2022 · After doing everything I’d been throwing a code for cyl 3 misfire. spark plugs, wires and coils are all fine, no vaccum leaks Aug 25, 2022 · Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds. About a week after that started happening, the check engine light came on. So when I went to swap around coil packs to see if that was causing it, I noticed the coolant hose sucked in like that. When I checked with a scanner, it indicated that cylinders 4, 5, and 6 are misfiring. what i would do is, take out the ecu fuse and fuel relay. ADMIN MOD Cylinder 6 Misfire? Code reader says cylinder 6 Nov 4, 2010 · Random Misfire Detected P0301 Misfire Detected, Cylinder 1 P0302 Misfire Detected, Cylinder 2 P0303 Misfire Detected, Cylinder 3 P0304 Misfire Detected, Cylinder 4 P0305 Misfire Detected, Cylinder 5 P0306 Misfire Detected, Cylinder 6 P0307 Misfire Detected, Cylinder 7 P0308 Misfire Detected, Cylinder 8 P0325 KS 1 Circuit Malfunction P0330 Jul 5, 2013 · 2002 Lexus IS300 3. Jul 15, 2012 · We hooks it up to the scanner and all we get is a random misfire code. It drove perfect though. Elke keer als ik het voertuig start, lijkt het alsof hij af wil slaan als hij stationair draait. Aug 10, 2009 · Hey everyone, I'm a new member to this forum but a Lexus owner for 2 years now IS300/03 5sp 120mil, I enjoy the ride and the power but now just lately i stumbled into a problem which my Mech and I can not figure out. Later on I then got a code for p300 multiple misfire which were 4,5 and 6 I’ve gotten brand new wires and spark plugs and the May 28, 2013 · P0300 random/multiple cylinder misfire detected. r/IS300. Here are some causes and opinions I've observed related to IS300 misfires: Sep 29, 2015 · Once turned off and started again at temperature (or warm) it misfires and runs rough. Mar 4, 2018 · 2001 Lexus is300 misfire. i have a 04 lexus is300 i have random misfires and my car seems to shut off once in a while. P0302 cylinder 2 misfire detected . Changed spark plugs. Misfire DTCs Service Category Engine/Hybrid System MarketEngine Mechanical USASection 2018 - 2020 IS300, NX300, RC300 VDS(s): AA1D2, AARBZ, AARDZ, BA1D2, Nov 25, 2021 · Hello all, and happy thanksgiving. The Mechanic can help with your Lexus IS300's cylinder 4 misfire issue. ) 3 - it feels like the typical rev limiter/cut out, or like Ignition is misfiring badly pretty much like i lost a Cyl. 3840 misfire at idle. 1 second then is perfectly fine and won’t happen unless Jul 31, 2007 · i am glad to have found this. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). i get the codes p0300 p0301 p0302 i got a code for the ignition coil primary a which seemed to be malfunctioning but i replaced all 3 coil packs i dont know wat is going on. I haven't driven it since changing the timing belt, so the misfire occurs while idling. 0L Cuts out, Misfire, MIL Lamp on Posted to Asian Driveability on 5/23/2013 5 Replies We did replace timing belt and after that it got misfire on cylinder #1 and #6. Misfire cyl 4, and it started to miss at a cruise. I had random multiple misfire and misfire on cyclinders 2356 with a pending misfire on 1. please if someone had that problem help Feb 19, 2020 · With that being said, there are no misfires under highway loads, which a solid amount of my time is being spent recently, so I can live with it. Did you do a compression test? Also there are spark plug seals on the inside of the valve cover. Can you describe any symptoms or warning lights that appeared along with the misfire? Customer: misfire at idle soon as I get to 2. Jan 6, 2024 · first gen is300 misfire misfire at idle misfire cylinder 4 5 6 Jump to Latest 1. 6K views 13 replies 3 participants last post by chuy409 Aug 7, 2021 Aug 29, 2023 · #help #misfire engine help help is300 sos Jump to Latest 687 views 2 replies 3 participants last post by chucky702 Sep 19, 2023 Aug 10, 2005 · Backfiring, surging, popping, sputtering and of course the CEL was flashing. I was on my way to work and had about another 10 miles to go. I have an 01 is300 and it started misfiring today. Members Online 05 auto is300 that I bought for $5,450 USD. Feb 26, 2013 · car started acting up a few days ago. Dec 14, 2016 · EML Flashes as it misfires Come in and enjoy our articles, galleries and information on aftermarket parts for the IS300, IS250, IS350. When I rev the engine, it hesitates up until 2k rpm and then it drives Aug 25, 2022 · Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds. The car shaking when I give up to 10% of throtle. Check fuel pressure. 5. Whenever I try to come to a hard stop the car doesn’t want to stop fully. Fingers crossed someone can help. Dec 2, 2009 · My IS300 is having a lot of problems right now. Jun 7, 2013 · Hi guys. Well actually a couple of days ago it would kind misfire every 2-3 minutes. 7K views 2 replies 3 participants last post by TobiasSing Oct 17, 2020. You would instead have misfire codes stored. Oct 22, 2013 · I have a 2002 bone-stock IS300 with 114,00 miles and I suspect I have a bad injector in cylinder 5. my is300 again show misfire in p0303. I put oem ones back on and got new o2 sensors and that code went away. Als ik stilsta, stationair draaiend, voel ik dat de motor een beetje Nov 23, 2013 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Sep 22, 2010 · P0301 is a #1 cylinder misfire and P0302 is #2 cylinder misfire. There was a little white smoke coming out of the exhaust but A subreddit for first generation Lexus IS300 owners and enthusiasts. Runs beautifully for a couple thousand miles, until*So a couple days ago I get the same P0303 cylinder Nov 9, 2012 · Okay, well I recently purchased an is300, it's progressively angering me more and more. not sure on the cause of this but it had been running and driving fine. Misfires and Loss of Power. When I checked the codes I had about PO4everything. I seriously reccomend removing, inspecting and cleaning the mass airflow sensor. com Dec 25, 2015 · I have my 2002 IS300 5 speed car has been running great %100 stock recently It started misfiring real bad, Codes that have come up are as follows P0301 Cylinder #1 — Misfire Detected P0302 Cylinder #2 — Misfire Detected P0303 Cylinder #3 — Misfire Detected P0304 Cylinder #4 — Misfire Detected P0305 Cylinder #5 — Misfire Detected Check the connectors on the coils. Edit-probably coil A subreddit for first generation Lexus IS300 owners and enthusiasts. check if you have power going to the coil packs when the car is running. Members Online Kellys Toyota dealership in Ireland has a one-of-a-kind IS200 with only 32 km (20 miles) on display from their collection. If you have P0300 and a cylinder-specific May 14, 2020 · If the misfire jumps to the cylinder that you’ve just swapped your IS 300’s ignition components into, then you know that you are looking at is a coil, plug wire, or (most likely) coil pack failure. I recently scanned my car with a OBD ll Tool and it gave me the code "P1349 Variable Valve System Malfunction" Does anyone have an idea what this coukd mean or how can i fix it? Any Aug 12, 2010 · 1st-Gen IS300. The car shakes when I rev it to about 2. March 04, 2018 Mar 19, 2018 · Hey, guys. One of the most principal and many cause is that your Lexus IS300 gas cap is loose, damaged or missing. New plugs, wires, coil boots, still misfires badly Tags misfire. Oct 6, 2010 · the car will run steady thru 4500rpm to redline and NOT misfire/cut out. A subreddit for first generation Lexus IS300 owners and enthusiasts. P0306 Misfire Detected - Cyl. I would check the condition of the plugs and make sure there's no oil pooled up in that area. One of the more common Lexus IS300 trouble codes include P0300. 1. Members Online • bayareaboys2000. I haven't washed the engine bay, but I drive on "E"mpty a lot. Feb 15, 2024 · If the CEL is flashing that means it's a hard misfire, the fuel isn't being burned completely. that would not set rich codes for both banks. the day after the problem was reversed car fired up ran perfect until I just started my summer project of trying to revive my 2005 is300. I have an HP header, Y Pipe, o2 sensor installed, and SRT intake. Mar 10, 2019 · P0300 is a generic OBDII code that can occur with the Lexus IS 300. Started the car to check if I fixed it and got a code P0120 - TPS Circuit A Problem, and I got an issue where I could rev UP the car, but it would never drop revs. The check engine light is flashing and it is running very rough, Ive stopped driving it. 3840 Views 14 Replies 9 Participants Last post by BlackSportD, Sep 22, 2010 Jump to Latest T. Sounds like you need to clean the throttle body. I had an oil leak and If your Lexus IS300 is having trouble starting, idling rough or has a sudden change in the position of the throttle pedal, this could be a sign of a bad mass airflow sensor. O2 sensor light so replaced it, changed all the vacuum hoses. Nov 19, 2018 · If the misfire moved to cylinder number 4, then you have determined that the coil pack is faulty and needs replacement. P0305 Lexus Code - Cylinder 5 Misfire Detected Apr 20, 2019 · P0306 is a fairly common trouble code with the Lexus IS 300. No other codes. Mar 22, 2009 · Misfire on all cylinders except #3, MAF malfunction, TPS malfunction. It's and OBD2 code and stands for: P0305 is certainly a cause for concern, and should be considered a threat to the drivability your IS 300. With the print out in hand it said Misfire #1 Misfire #3 Misfire #4 Apr 1, 2019 · P0304 + Other Cylinder Misfire Codes. Mar 17, 2019 · P0302 + Other Cylinder Misfire Codes. Nov 6, 2022 · i have a 2004 Lexus is300 with 255k miles. Jun 10, 2020 · 01 - 06 Lexus IS300 ; Random misfire cylinders 1-5 Random misfire cylinders 1-5. Aug 13, 2019 · So I have a 2002 IS300 that runs great aside from this. 2K views 6 replies 3 participants last post by kjet85 Jul 12, 2022 Oct 30, 2022 · ok so ive got a 04 lexus is300 and the check engine light is on. Idles smooth, pulls strong and healthy. '02 Lexus IS300 MSM 5AT LSD - RIP '08 Chevy Silverado 4x4 LS2 Swap - SOLD '13 Subaru BRZ Limited 6 Spd - SOLD Oct 31, 2021 · Hello everyone! I have issues with my lexus is 200 (1999, 1G-FE), the engine vibrates under acceleration, has misfire in cylinders number 1,2,4 and feels like it's in LIMP mode . Oct 11, 2015 · I noticed my 04 is300 would misfire at an idle, and especially when id put it in reverse. The nice thing about P0306 is that it's a cylinder specific trouble code, which makes diagnosing the Aug 21, 2024 · Hey guys I’ve been fighting this misfire p0300-306 for months now, like Pullin my hair out. This raw fuel hits and burns in the cat and can damage it. The CEL came on so I took it down to Autozone and had it checked. Nov 23, 2011 · Hi Guys, Sorry I have to post a Lexus problem in the Supra forum, because I cannot find a IS300 forum under Lexus. 4 and 14. It of course goes away when I reset my ECU and then appears a few days, sometimes a week or two later. No other codes (other than b2s2 sensor since I took it out to run my wideband). if it doesn't, well theres your problem. i opened up the ECU and try to find any burn, brown, flaky, and anything that looks dysfunctional to the ecu and Can you describe any specific conditions under which the engine misfire or hesitation occurs, such as during acceleration or at idle? Customer: My obd2 is giving me cylinder 4 misfire Mechanic's Assistant: OK. Apr 17, 2008 · 2002 Onyx Eshift Lexus IS300 2004 Black MT Nissan 350Z Past Mods- JoeZ intake, Toyomoto Headers, Toyomoto Race Pipe, Greddy Evo 2 Catback, Zex nitrous, NX nitrous, Greddy Emanage, clear front bumper lights, Autometer AF gauge, PLP front strut, PLP rear Strut, PLP trunk brace. Aug 28, 2008 · 2003 Lexus IS300, (Yellow), JIC FLTA1 coilovers, 19 inch axis crux, dunlop rubber,Vis carbon fiber hood, srt intake, greedy exhaust, kenwood excelon touch screen navi, clear corners, tints, teck pro ground kit, and Stop-tech cross drilled/slotted rotors with axis pads. It will misfire badly under WOT or under heavy throttle at low RPM. Its so bad that the check engine light starts to flash then stops flashing. This code indicates that your car's engine is misfiring and can be a drivability threat. The nice thing about P0305 is that it's a cylinder specific trouble code, which makes diagnosing the May 25, 2017 · 1st-Gen IS300. I pulled a P0300 code (random misfires) Need help with is300 misfire and brakes. Things checked/replaced: Compression for cylinders 1-6 is at (PSI) 80, 30, 0, 59, 119, 180 Checked valve clearance No excessive oil visible after removing spark plugs No mixture of coolant and oil MAF Sensor replaced Valve timing checked Aug 25, 2022 · Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds. 2, 14. Whenever I press my brakes fully down all cylinders start to misfire. The gas cap for your Lexus IS300 serves multiple purposes. Same problem. When I drive the car regularly it drives just fine, but once I mash the throttle it starts backfiring and losing power. PLEASE help. Suspect an ignition-related cause or a vacuum leak. I interchanged the coilpack 2 to 6 and the problem stills on cylinder 2. P0302 Lexus Code - Cylinder 2 Misfire Detected Aug 25, 2022 · Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds. There are 3 ports, 1-2 are typically capped and these caps split and fall off. 4 FX4 ~ Hers SOLD - silver '03 MR2 Spyder - white '91 MR2 hardtop - white '85 MR2, black '91 MR2 RIP - black '88 MR2, silver '86 MR2 Mar 30, 2025 · Ik heb een vergelijkbaar probleem: als hij warm wordt, daalt het stationair toerental en blijft dalen tot een paar honderd toeren per minuut, dan een paar misfires en dan slaat hij af. I have an 02 is300, I got the NGK iridium ix plugs since i’ve heard on forums here that they are pretty good. I had no problem with the car up to now. I checked the timing, it was on point. It has 240k miles. Aug 25, 2022 · Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds. Sep 20, 2006 · however, that would at most cause a misfire on only two cylinders. 6. While at a stop, idling, I feel the engine kinda stutter. I bought a 2001 Lexus IS300 automatic with 145k miles last Sunday. Mar 30, 2021 · Some 2015 - 2017 model year NX 200t, 2016 - 2017 model year GS 200t, IS 200t, and RC 200t, 2018 - 2019 model year GS 300, and 2018 - 2021 model year NX 300, and 2018 - 2024 model year IS 300 and RC 300 vehicles equipped with an 8AR-FTS engine may exhibit a MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs For a background on the recent work I’ve done, I was originally diagnosing a misfire. Car was diagnosed, cleared, and rediagnosed with P0303 cylinder 3 misfire several times. Here is the the scenario, The Cel was on for the longest time, i got it check it Apr 19, 2014 · p0306 cyl 6 misfire p0301 cyl 1 misfire p0300 random misfire Quite the line up. Apr 9, 2023 · coolant exhaust head gasket is300 is300 engine leak misfire oil oil leak Jump to Latest 6. Just a little bit, but now it misfires constantly. Asked by K. i drove it home after checking my fluids i took the OBD scanner to see whats going on, hoping i May 4, 2015 · Today I cleaned the MAF sensor, reset the ECU, and then had misfiring at idle and it threw the misfire codes (random misfire + basically all individual cylinder misfire codes). 1) When I cold start my car, there is a faint odor of unburned gasoline. Go Faster misfire at idle. If I lay into it a little more instead of barely pressing the gas it won’t misfire It’s a very wierd misfire as if it just skips one fire or the fuel is cut for . I know a faulty vvt solinoid can cause a misfire in multiple cylinders, but how I don't know. It only happens when in low RPM, both ways of feathering the throttle or stepping on it hard from the way i A subreddit for first generation Lexus IS300 owners and enthusiasts. It's common for oil to get in there because the filler neck is right there. Jul 15, 2022 · Hey guys, recently I did a timing job on my 03 IS300, after the timing job. All went well until I realized my valve cover gaskets are leaking bad and each plug is soaked in oil, most likely the cause of the misfire. The last week a CEL with track off appears and the car dont run well. The car has this knocking sound when running, my ears are not that great, but it seems to me the sound comes Mar 2, 2009 · Greetings, 2 main questions: 1) A couple days ago the engine starting running a little rough. 5 to 3 rpm smooths right out Mechanic's Assistant: OK. I pulled up a P0300 (multi misfire) a P0302 and a P0306 (cyl 2 and 6 misfire) I thought it was the flow meter. P0174 System Too Lean (A/F Lean Malfunction, Bank 2) P1123 Accelerator Full Close Switch Circuit Open -pending faults 7-P0300 Random Misfire. Had one of the technicians at work (I work for Toyota) pull the codes and I got P0300-P0306. Feb 23, 2014 · hi. I had a red 2003 is300 that was wrecked with 88k miles. you need to start checking So I have been battling this issue ever since I bought the car. P0304 will often be accompanied by codes P0301, P0302, P0303, P0305, etc… These codes indicate a misfire in cylinders one, three, four, and five, respectively. P0300/pO303/0304; By Springer December 24, 2012 in 01 - 06 Lexus IS300 Share Oct 22, 2022 · I have a 2002 Lexus is 300 and had a bank 2 sensor 1 issue due to having aftermarket headers. Typically, as the engine RPM increases, you won’t be able to “feel” the engine misfire as much. General Discussion Apr 15, 2012 · is300 coil misfire Jump to Latest 2. If the misfire did move cylinders, you can go ahead and replace the plug, plug wire, and coil pack. Treat P0304 with these codes like it has P0300. He had disconnected the wires which sense the physical key presence Customer: 2004 is300 Mechanic's Assistant: Thank you for providing the model and year. I found a P0302 misfire cyl 2. Jan 28, 2010 · so few weeks ago i noticed my 01 IS300 E-Shift with 138,000 miles is having some sluggish/hesitation when giving throttle from a dead stop but it only does it about 70% of the time. The mileage on my 2002 Lexus is approximately 160,000. 8K views 6 replies 4 participants last post by 1988_Supra Apr 16, 2012 Feb 12, 2016 · IS300 won’t start; Long cranking time; Engine misfire; Check Engine Light ON; Of course one of the early warning signs is your IS300 check engine light. I swapped those, and still got the misfire in 2 and 5. Since the misfire Freeze Frame was at idle the problem is not likely ignition related. 000 mijl (ongeveer 349. I dont belive that bolt to be your problem. Sep 15, 2008 · Maintenance - Engine hesitation, power loss, sluggish acceleration: Potential fix - SUMMARY Symptoms: Gradually increasing car hesitation, power loss, sluggish acceleration, lowered fuel economy. Replaced the coil pack connectors cause mine were busted. Jan 17, 2020 · p0301 means misfire detected in cylinder 1 same with p0302 and p0306 it means a misfire has been detected in cylinder 2 and 6. Nov 28, 2012 · Hey everyone, I'm a new IS300 owner and I love the car but I think it hates me. So rand om misfire in all cylinders. Plugs 4, 5, and 6, black as can be. hard thru 4500 rpm 5 - when I felt it originally, I always lifted immediately & shifted assuming I Nov 21, 2014 · Recently under normal driving conditions, my 2001 IS started bucking and missing randomly. It destroyed the plug at the same time, so they were both replaced. 4K views 3 replies 2 participants last post by ill_mannered Jan 7, 2024 Sep 1, 2007 · 01 - 06 Lexus IS300 ; Battery Change = Engine Misfire? Battery Change = Engine Misfire? By absolutjh September 1, 2007 in 01 - 06 Lexus IS300 Share Oct 31, 2020 · Yes and no, I thought I had gotten the misfire code fixed, but recently I have been getting misfire in cylinder 2 and 5. I am trying to solve a misfire so I dove into replacing the spark plugs. 4 - misfire/cutout happens in any gear if I rev. Since I got it (about 400-500 miles after getting it) the CEL came on. I have a 02 IS300 that has been giving me problems since I bought it. ) Jump to Latest 3. Anyhow, I've had a P0161 code leading me to B2S2 o2 sensor for a long time, and since I pulled both set of plugs and both times bank 2 is dead rich. 3. Ran fine for a while, but then started misfiring again. A leaky valve cover gasket, for example, can flood the spark plug cylinders with oil intermittently, causing Oct 18, 2013 · @jasonm4. galleries and information on aftermarket parts for the IS300, IS250 Apr 1, 2025 · Hé allemaal, ik heb al een tijdje problemen met mijn automatische Lexus is300 uit 2001 met 217. Save Share 2001 IS300 Engine 2jz-ge w/SRT intake; HP header; Toyomoto ypipe Mar 22, 2008 · A random P0303 misfire cylinder 3 code?? Come in and enjoy our articles, galleries and information on aftermarket parts for the IS300, IS250, IS350. Car runs fine and has power after reseting ECU for f Oct 26, 2019 · 3. After around 350 miles of driving the CEL came on with a Traction light flashing. Aug 25, 2011 · Ok heres the problem im having: I am supercharged but i dont have the charger in at this time, but im throwing a mutiple/random misfire code and one day it also threw a cylinder 3 misfire code. Apr 11, 2007 · 2002 IS300 5mt. Garage have ruled out, spark plugs and coil packs. Primarily at idle, smooths out at rpm. I am a new member but not new to Toyotas, my names Brandon and I am from Houston. misfire; By Floyd Sr June 10, 2020 in 01 - 06 Lexus IS300 Share Oct 12, 2012 · So im randomly getting misfire codes on a cold start, its not consistent and you can't actually tell the car is misfiring it starts right up and runs fine. Some people are still dealing with driveablity issues. Treat P0302 with these codes like it has P0300. 5-3k. Jan 5, 2022 · is300 is300 engine lexus misfire rough idle Jump to Latest 14K views 20 replies 9 participants last post by Austezza2J Mar 30, 2025 Apr 30, 2006 · I am intermittently getting P0301 cylinder 1 misfire. next morning same thing. had a random misfire engine not throwing codes but could clearly hear it, on cold starts (between -5 and -10) car would hicup while idleing, once at operating temp it would run normal idle normal zero issues. MSM stock for now Cobra Project: FFR MKIII '65 Cobra Replicar - 427 cid V-8 (thats 7. 2018 - 2024 IS300, RC300 VDS(s): AA1D2, AA5BC, BA1D2, CA1D2, Cylinder Misfire DTCs and go to substep B for Air-Fuel Ratio Imbalance DTCs. if your driving it seems to run fine other than a SLIGHT loss of power but hardly noticable but when idling it was VERY obvious there was a misfire ( sometimes it would even die while idling but always started right back up ) took Aug 25, 2022 · Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds. Low fuel pressure can cause intermittent misfires on multiple cylinders. is300 Apr 24, 2023 Sep 25, 2016 · Misfires on cylinder #6 is more likely due to vacuum caps/connections on the underside rear of the intake. P0305 Misfire Detected - Cyl. There is a light clunking noise when it warms up. put it directly to a peice of metal on the motor and start it. '02 IS300 MSM LSD Save Share Jan 8, 2020 · 01 is300 misfires on 1, 3, and 5. Sep 10, 2020 · Instagram: @jasonlazo- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -#IS300 #altezza #Lexus- - - - - - - - - - - - - - - - - - - - Sep 21, 2022 · So i’m kind of confused on why my is300 is throwing these misfire codes after i’ve done a change recently i’d say about a few days ago or almost a week from today. I pulled the codes and got all 6 cylinders misfiring and random misfire code of course. 2. Jump to Latest 15K views 19 Dec 19, 2007 · Hi All,*A little background. Did some searching and faulty injectors seemed common so tested the resistance of them and from 1-6 the values were 13. As soon as you hear the relay for the fans click over, the car starts misfiring, and Sep 3, 2018 · P0303 Cylinder 3 Misfire Detected P0302 Cylinder 2 Misfire Detected P0300 Random/Multiple Misfire Detected. 000 km). P0303 Misfire Detected - Cyl. New spark plugs, new spark wires, new VVTi Solenoid, replaces some vacuum lines, and cleaned MAF. I bought it with misfire codes that were P0300, P0301, P0303, P0304, and P0306. It would happen mostly when pulling into a parking spot (at idle with the wheel turned at full lock), and while cruising at around 2k RPM. Ik heb gezien dat de mijne de misfire-code geeft als dat gebeurt. Made sure to triple check TDC on cams and crank every chance I could and counted 16 teeth between the lines both when i removed old timing belt and put on the new one on. and if it would cause a low compression in only one cylinder too. I went ahead and replaced the no 4 spark plug. Thanks for your input! The car has 157k miles on it, and I haven't cleaned the throttle body but that sounds like a good idea. I replaced wires and spark plugs for maintenance 600 miles ago. Every time I start the vehicle, when idling it feels like it wants to die. P0301 cylinder 1 misfire detected . pull out the coil packs and hook up the wire and plug to it. everything was great with the car for around a Customer: Hi. So I replaced the cyl 4 coil pack, same problem. When those seals fail, oil gets up into the spark plug chamber and causes a misfire. 4K views 11 replies 3 participants last post by Blaze. I am looking for help, I bought this 02 black on black sport cross around June. A few months back, I lost a coil pack (cyl 2). It's and OBD2 code and stands for: P0306 is certainly a cause for concern, and should be considered a threat to the drivability your IS 300. 2001 Lexus IS300. Oct 16, 2020 · 2002 IS300 Codes P0300, P0304, P0305, and P0306 (Random Cylinder Misfire, 4, 5, and 6. The misfire happens only when the car is sitting still, or moving slow enough that the cooling fans kick on. The car runs rough ONLY in cold starts. jamesstew in Elk Grove, CA on . I work for a Toyota dealer and am friends with some pretty smart technicians, been helping me out hours and hours on end. any idea? only less for test, test compression in the cylinder 3 and fuel presure, i test the igniter coil and spark plug and i got fire in the spark plugs. But mentioning the coil packs. I was amazed I made it. The first time I got misfire codes on all 6 cylinders and 0300 for random multiple. Jan 8, 2012 · P0301 Misfire Detected - Cyl. P0302 will often be accompanied by codes P0301, P0303, P0304, P0305, etc… These codes indicate a misfire in cylinders one, three, four, and five, respectively. If the misfire count exceeds the threshold levels and could cause emission control system performance deterioration, the ECM illuminates the MIL and stores a Diagnostic Trouble Code (DTC). The Lexus dealership basically said your car is running fine and it is Aug 31, 2014 · Now I am faced with the misfire issues. P0304 Misfire Detected - Cyl. It's constant and entirely obvious. Replaced a bunch of old vacuum lines during this process. while Apr 14, 2006 · 1988 MR2 SC - 2002 IS300 Sportcross -2010 F250 6. Apr 13, 2019 · P0305 is a fairly common trouble code with the Lexus IS 300. 120k miles, bone stock, single old man owner w/ full service history. Backstory: I purchased the car from somebody who had broken the ignition casting and the car was stranded in his car port. It appears to be on time, but it's misfiring. Replace spark plugs and spark plug wires/ignition coil packs if needed and recheck for misfires. . P0303 Lexus Code - Cylinder 3 Misfire Detected Apr 2, 2009 · is300-Multiple/1,2,3,4,6 cyl misfires. Thanks for the info. A few hours after I started noticing my CEL went on and my traction control light started flashing. Apr 12, 2007 · I'm dealin' with the same thing right now. 2, 13. One new thing I have learned is that the car only misfires in Apr 3, 2012 · My IS300 recently started sounding like a diesel truck at idle and its rough. Sep 26, 2015 · I have a 2002 Lexus is300 2jz Stock Engine with a check engine light on and a "trac off" light blinking . I swapped out coil pack 1-2 with 3-4. We checked timing, capped off some of the main vaccuum hoses one at a time to rule out a vaccuum leak, and we unplugged certain things like O2 sensor, VVTi, etc. maf sensor has no problem; i put new o2 sensors, also new pcv, new coins and etc when i zerod my car by Battery my car starts and not have any misfires, but after 30-40 km misfire on 1 and 3 cilynders starts again. P0300 Lexus Code - Random Cylinder Misfire Condition Dec 24, 2012 · 01 - 06 Lexus IS300 ; Random Misfire Random Misfire. But a tech said that if it was the flow meter, it would throw a flow meter code or all the the cyl would misfire. Once I got the engine into my 04 and got it fired up I’ve been having a constant misfire for almost 5 months. Jul 7, 2022 · P0305 Cylinder 5 misfire Jump to Latest 6. 9, 14. 0 liters) engine 525hp/520lb-ft torque at the flywheel (and this Jan 18, 2023 · so I bought this 02 is300 and it needed new new cam seals so I the process I replaced an few other things that desperately needed attention as follows; Cam seals Water pump/gasket Timing belt Belt tensioner Serpentine belt Put it all back together went to start her up and is now has a misfire '97 Lada Niva with the GM monopoint system, sometimes runs great sometimes runs shit, misfires at idle/under load, throttle hesitation and bucking when accelerating, also down on power. Thats it. p0300 (random misfire) p0301 (cyl 1 misfire) p0303 Jul 29, 2021 · IS300 cylinder 3 misfire? Jump to Latest 4. if it sparks, your good. I am getting a cylinder 3 misfire stored AND pending code. '97 Lada Niva with the GM monopoint system, sometimes runs great sometimes runs shit, misfires at idle/under load, throttle hesitation and bucking when accelerating, also down on power. 4. When you see your Lexus IS300 starts to show any of these signs, use a OBDII scan tool to retrieve your trouble code. P0303 Lexus Code - Cylinder 3 Misfire Detected Mar 28, 2022 · I've searched the forum and still can't find why my car is having random/multiple misfiring, the only code I'm getting is p0300 and p0171 which I figure is just because I'm running an aftermarket header, but p0171 was just recent. This can lead to a loss in power and acceleration, making it difficult for your vehicle to perform at its best. I have changed all the plugs, ignition coils and plug wires and I still have a stubborn misfire that I cant seem to figure out. P0300 Lexus Code - Random Cylinder Misfire Condition Jul 29, 2012 · You're throwing lean codes on both banks(P0171, P0174) which means you're running rich, random misfires(P0300), misfire detected on cylinder 3(P0303), and P1780 is a malfunction of the park/neutral safety switch, which is on the side of the transmission. May 6, 2013 · Is300 RWD "Manual" Going under major surgery Save Share Reply Quote Like Jan 25, 2025 · Hello folks, My trusty 75k IS200 has started misfiring - engine light and TRC light came on. If they're loose, broken or wet, it'll misfire. So i changed all my plugs and replaced the coil pack for cylinder 3, but the code came back, the Jan 18, 2018 · After I bent a GE rod at 5psi on the Borg Warner s256sx last year I rebuilt the engine, but I think I'm missing a few grounds? Apr 18, 2009 · misfire is usually caused by fuel or ignition. Mar 28, 2025 · Hey y’all, I’ve been having issues for a while with my 217k mile automatic 2001 lexus is300. Almost as if it were running low on gas. Mar 26, 2022 · I have a misfire anywhere from 1500-3000rpm if I’m slightly on the throttle. Nope definitely plugged in :/ Apr 23, 2007 · I did the right-up because I read every P0300 and misfire post in this forum and everyone seemed to have different causes and solutions. P0303 cylinder 3 misfire detected . im new to the mechanic life and its very stressful. P0304 Lexus Code - Cylinder 4 Misfire Detected Is300 multiple misfire Car was running fine only throwing a few codes(o2 and maf if i remember) and now its throwing multiple misfires (1,5,6 ) maf intake air temp sensor some o2’s and a evap. Checked the coils, they all seemed to look good physically. Show Less . Before the accident the engine ran great, it had an 01 gs300 engine. P0301 Lexus Code - Cylinder 1 Misfire Detected Customer: I have a 2002 Lexus IS300 and recently changed the timing belt. Dec 8, 2014 · P0300 - Multiple cylinder misfires; P030(1-8) - Misfire in cylinders (1 through 8) If there are only misfire codes stored in the vehicle's computer, the issue is probably related to something the computer doesn't have sensors to check. So far, with some tinkering under the hood, ive got the misfire codes down to just p0300(random misfire) and p0301 (cyl 1 misfire), and the evap codes still pop up, as well as the p0420. SOLD: '03 GGP Manual IS300 97K Miles - SRT HFI, B&M Shifter, Colgan Mask, Alpine F340 Amp, Infinity Kappa Speakers, 2-Din MP3 Player May 22, 2014 · Misfires are very common and associated with misfires but generally you would normally get DTC P1349 OCV/timing code. y replace 6 new injector, new maf sensor, no vaccum leak, spark plugs wire are new, i swap the igniter coil and spark plug, but same problem. So basically misfiring on all cylinders but 2 and 5. Author: Misra,Prasun Sep 21, 2016 · my lexus rx 300 1999 has a problem code p 0171 an aftar that code appear on my obd go to 30-40 km and starts misfire on 1 and 3 cilynder. P0302 Misfire Detected - Cyl. Swapped plugs, coil packs, and wires and saw no change. Scanner shows P0300, P0301, P0302, P0303 and P0216. Sep 29, 2020 · So I just finished timing belt job on my 2001 IS300 [Automatic] with the OEM kit with cam/crank seals, WP, etc. Bad fuel injectors can cause misfires in your engine due to an incorrect air-fuel ratio. Treat P0303 with these codes like it has P0300. The oil then becomes contaminated over time and starts to conduct. fml. Hij geeft ook de code voor de gasklep-regeleenheid. I cleared the codes and got the same a week later, clear Go to IS300 r/IS300. Oil by itself does not conduct. - started up my car the other night and my engine light came on, trac light came on VSC msg came on the dash, engine was rough idling. looked up a few other things with the scanner and found out that cylinder #6 has over 60+ misfires and the other cylinders #2,#3 will have around 3-8 misfires. Apr 1, 2019 · P0303 + Other Cylinder Misfire Codes. Jan 19, 2023 · Hi All, I've been chasing a misfire on Cylinder 3 of a 2001 IS300. It hasn't thrown a single code so it makes it all the more mysterious and difficult to diagnose! Dec 9, 2013 · 02 is300 misfire on 1 & 6. zrocaicgplpzsqopmzacrbasdavmrbuuigimuwneexrbghiuwood