Honda cold start misfire Sep 29, 2024 · Honda civic lx 2009 (R18 1. 4 to 17. 5-liter turbo engine. I changed the plugs with good ones. Misfire codes popped up. After about 10 seconds it runs fine. 5 cold misfire on bank # 2 (cyl. I'm a 5-speed driver, so misfires are a REAL drag when banging through the gears. I haven't noticed it when the ICE is consistently running. Mar 19, 2025 · This time it gave me a cylinder 3 misfire. Uncanny how clean this motor is all around for all the miles we've racked up on it. Mar 4, 2014 · The colder the weather, the bigger the misfire and rougher it sounds. Dealer checks the codes and says it is a cold engine start misfire! FF to yesterday and I start the car and it really starts to misfire and then the dash lights up with a CEL and then every single assist issue: lane keep assist, ABS, electric steering etc. Got a Honda part. which does go off most times. First time Honda owner. This happens in cold, warm, or hot weather (southern Alberta). Never had valve adjustment (yikes!). I finally thought to check freeze data and note that the misfire is occurring at start up ( w/t was 84 deg F ). The shop that did timing belt did not replace the timing belt tensioner (not smart - worse than not Feb 22, 2016 · The dealer said I had a leaky VTEC Valve, I think it's also called the spool valve? I changed the valve with an after market part, didn't work. T-belt changed 70K ago. Apr 2, 2015 · Unlike most engine codes, a misfire has a long list of possibilities that can cause it. Similar issue happened to me the last 2 weeks of December 2020. Only to get check engine light with every warning popping up saying take car to dealer. Car was sitting in the garage and went to start it in the morning. Mar 6, 2022 · Hello to all, I am a new member to this amazing forum but have used your advice several times in the past. Every cold start results in a #5 misfire. American Honda recommends that you thoroughly read it. If the car has already been warmed up then it starts with no misfire, although it does sometimes have a rough start just like M6Coupe seems to have. As soon as I put the car in gear (in Drive) the car vibrates quite bad. 8 and bank # 1 is 0. Use another gas station for a full tank, toss in some Chevron Techron. During cold starts while idling I’ll get a couple sputtering sounds. When I had that issue that’s what I would do to keep the computer from setting a check engine light until i finally did the valve adjustment and that solved my issue. No clue what to do with that info. K20z3, boosted. when the engine is cold, it starts fine, when the engine is warm, rough starts. I have just replaced a fuel pump and it had solved the misfires on all cylinders. Switching new coils didn't make a difference. 180k CVT 43-45 mpg avg. Cleared Codes. The air fuel gauge goes from 15. If your getting a misfire while driving that might be an indicator of an issue but these cars will detect misfires and adjust the Knock control to compensate for harsh conditions ie: cold start, hot air intake temp, rough driving, bad fuel ext Jul 6, 2021 · If you experience an engine misfire when cold, decarbonizing it might fix the problem. I got a NEW gas cap. 0 The car is at operating temp and at idle. Once the engine warms up and the codes are cleared, the light will not come back on until it is started when the engine is cold. Has new plugs and coils in it. Jul 8, 2020 · TLDR: car stutters on cold start, need help with diagnosis What's up everyone, I seem to be having a new issue that i can't find any related discussion to. (They actually looked fine). . 4 5 & 6) Does anyone know why my Long Term Fuel Trim on bank # 2 is -13. Feb 14, 2021 · Hi, I have a 2005 Honda Pilot Ex-l with RES. leak down test Aug 22, 2021 · If due, Oil change + change engine air filter. Car goes into limp mode and barely moves. NOTE: You MUST restart the engine for the misfire to go away. I am currently having a cold start mis fire on cylinders 4,5 and 6. I changed all spark plugs , checked for vacuum leaks, checked valves Feb 18, 2014 · Got it back together and drove it with no problems except the light and those pesky misfire codes. This article explains how to diagnose and repair common misfire problems on your Honda Civic. Cleared codes. Earlier this week the engine was sputtering and barely accelerating after a cold start and CEL activation; turning off and on the engine resolved that. I own a 2011 honda accord exl v6 nav. Sep 14, 2024 · I have a 2018 Honda CRV/awd with the 1. Jan 5, 2021 · 250K on my sister's '05 Odyssey. Recently my Si has started to intermittently stutter on a cold start. I was at a loss for what to do next but I decided to change the oil since oil life was at 15% ( *&#% odd size Honda filter! Sep 25, 2009 · Hello! 2007 civic coupe, automatic. Coils all look like brand new. Checked plugs, vacuum leaks , valve adjustment, compression test. Symptoms totally disappear after vehicle warms up. This post and video explains how to decarbonize an engine if your car’s misfiring at start up when the engine is cold. Jun 18, 2009 · I find my car idles quite rough on a cold start up (ie when car has been left overnight) It is recommended that there is no need to warm up our cars for too long so I let the car idle (in Park) for 1 minute then take off. I am resurrecting an insight that slid off the road into a small bush. When I try to start it after sitting an hour or two, so coolant reporting between 90 and 100°, I get the misfire. It stutters very briefly, for only a few seconds or so, and then continues to idle normally. They are OEM spec NGKs installed at 105k. All were in good condition (none oily). I notice it when idling at a nearby stop light/sign within 5 minutes of cold start. End up getting to a mechanic and they pull codes and indicates misfire on Cylinder 3. In my case the issue only occurs on cold startups. Mar 13, 2022 · Hello All, Having issues with a 2011 accord 3. When cold, or sitting overnight only, vehicle starts up fine, however has rough idle, loud exhaust vibration sounds in interior, is worse in reverse backing out of driveway. 4-6 codes every morning. From reading online, I figured it might a spark plug issue since Hondas have a hard time with autolites, so I went back to the parts store and purchased a Bosch spark plug to try it out in that cylinder. 3 where it becomes rich If I drive under 2500 rpm’s it won’t really missfire to much after little bit of heat, but if I try boosting while not hot, it’ll missfire like crazy and in all cylinders when May 31, 2023 · misfire in cylinder 1, misfire in cylinder 2, random misfires. (almost like a 2-stroke) I do believe it is mechanical as Vit-Viper is doing my tune for my set-up. May 13, 2021 · The issue is that the misfire in that case was permanent I believe, it happened always at idle (I think, maybe I’m remembering wrong). Although back in March, when it was 30 degrees here, rough cold starts. Timing belt tensioner is LOUD and with lots of play when cold. I went back to the mechanic the next day to get the exhaust fixed and when I got there I used my OBDII reader and I had a misfire again on cylinders 2 & 6. 5T with 43,000 miles. Again, this condition only exists on cold startup and cold here is about 70 degrees in the mornings. Fixed. then fine. strange because i thought fixed after replacing above. Dec 10, 2021 · The next day I removed the remaining 3 Denso plugs and replaced them with the original NGKs. Rule #1, start from scratch, especially since I found a new (aftermarket) coil on cylinder #3 vs #6, it naturally crept in my head that Jan 31, 2019 · I think it's subtle but noticeable vibration. I have noticed in the past 6-7 months that when you go to start it up in the morning, the engine shudders for about 10 to 15 seconds, and then levels off to normal idling. When the engine is cold, meaning less than 60 degrees, it starts fine. but VTM light. It can be anything from a fouled spark plug to an unruly blown head gasket. Purchased an '07 Sport Fit in September '06. (purchased in 2018-brand new). over two tanks Get multiple misfires on all cylinders on cold start only. SYMPTOM The MIL comes on with DTC P0300 (random misfire detected), and/or P0301—P0306 (cylinder misfire detected), or P219A/B (air-fuel ratio variation of cylinder [bank 1, rear bank/bank 2, front bank]). Nov 9, 2020 · Ive narrowed it down a bit. Were the valve clearances checked at around 100K miles as recommended by Honda? Cold misfire is a classic symptom of tight valves. Engine light came on again. When the engine is at operating temp, it starts fine. I received a P0303 (cylinder 3 misfire) when cold start-up, code reads in less then 1 minute. Sure enough it cleared the misfire and the car ran fine for another week. Dec 1, 2016 · The owner had been chasing an engine misfire for some time. Jul 6, 2022 · code reader misfire moves around but lately #5 or multiple misfires previously. Apr 6, 2010 · Thanks. PROBABLE CAUSE Apr 22, 2020 · Hello All, first post here. Jun 13, 2011 · 2018 Honda Accord EXL 1. Truthfully, diagnosing a misfire requires an ECU reader, common sense, and lot of luck. Now whenever the engine is cold started, it throws a code for misfire on cylinders 1 3 and 6. This bulletin has been extensively revised. Sometimes it's bad enough to turn on the CEL, sometimes not (but it's always logged in the computer). Jun 27, 2013 · •The engine code always reports misfire on Cylinder #2 I put in a new plug and swapped coils but it still reports the misfire on cylinder #2. Oct 23, 2013 · Fit DIY: Repair & Maintenance - Misfire Problem SOLVED - I was one of the first Fit purchasers in the US. Sat for maybe 2 years. Misfire only appears to happen briefly upon cold start idling. •Once it starts to misfire it will continue to misfire until the engine is at operating temperature and you restart the engine. Soon as i clear the Dec 23, 2021 · The Fleet: Victus - 2012 Honda Accord - EX-L V6 - Crystal Black Pearl - 49k miles - Bought used in July 2022 with 23k miles Bolt - 2006 Honda Odyssey - EX - Ocean Mist Metallic - 111k miles - Bought brand new in August 2006, never any major repairs, possibly the most reliable Odyssey on the road Apr 11, 2021 · Your car has a K series engine. Jun 29, 2022 · When you do a cold start up next time try keeping the engine at about 2000 RPMs for about a min or so after you start it and see if misfire code comes up. Not detectable under load. runs GREAT!!! EXCEPT every cold start it will run very rough low idle almost stalling for about 30 seconds. +++++ What was the decarbonizersomething like Seafoam, Techron, or CRC intake valve and turbo cleaner? Mar 29, 2023 · Nothing to worry about especially knowing how many miles there are on the car. It doesn't occur immediately at cold start - and I'm one who intentionally starts with the ICE on and idles for 30+ seconds for 'warm up' before moving car. The story as relayed to me was, spark plugs were changed, coil swap game was done, valves were adjusted, car continues to misfire, usually cold. Try and hit only the start button to get in acc mode for 30 sec before hitting the brake and start again, this should get the fuel pressure up and may help O2 sensors respond faster before engine start, see if this makes it better or worse. 6 visits to the shop and still unabl. Feb 5, 2016 · I have a 2011 V6 with 98,000 on the odometer. 8L) turbo’s and 350cc injectors with hondata tune. dvnyrn qia qxgka qaz qyovly rjx paril zitbxexk bfhbdb xabfi peynvh olq xfiqwof ipig gad