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Engine misfiring on cold start

Engine misfires on cold start and runs well as engine warms up?

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6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Audi v6 2.8l (AAH) warm misfire at idle

It is necessary to replace rings on pistons.

Posted on Dec 21, 2008

lpocord
  • 12 Answers

SOURCE: Audi A6 2001 1.9 TDI Engine misfire

i'm very convinced it is your mas airflow sensor!!! Had the same problem on my A4

Posted on Apr 26, 2009

  • 1 Answer

SOURCE: 2002 ford windstar misfire!!!

I had the same problem with my 2002 windstar. I had to have the ignition coil replaced.

Posted on Aug 25, 2009

  • 90 Answers

SOURCE: 4.3 vortec runs OK cold, runs rough or dies warm

Your cylinder 4 misfire would most likely be a bad plug wire. And it is common for cars to have driveability problems with a crankshaft sensor code, esspecialy after the car has warmed up that is when you will notice the problem. The crank sensors are pretty simple to change and relativley inexpensive maybe around 40.00 for the part. If you look around the crank shaft pulley you will see a sensor with usually 2 bolts and a couple of wires attatched to it. If the vehicle gets to a point that it won't start, spin the motor over watching the tach on your dash and if it is not moving while cranking that means the sensor gave out. Good luck. swiftautorepairs.com

Posted on Oct 01, 2009

roniecon
  • 6826 Answers

SOURCE: 2003 kia # 3 misfire/ runs rough

Replace the coil for number 3 cylinder.

Posted on Nov 11, 2009

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Engine miss when cold, engine light on, new gas, air filter. fuel pump in tank. hot engine loght goes on off, when off at stop stalls out engine light off.


Diagnose Engine Misfire - Auto Diagnosis Repair Help

www.aa1car.com/library/misfire.htm
The engine may shake so badly at idle that it causes vibrations that can be felt in ...The engine may only misfire and run rough when cold but then smooth out as ...

What is causing an intermittent misfire only when engine is ...

community.cartalk.com/.../what-is-causing-an-intermittent-misfire-only-...
Jun 27, 2013 - NOTE: You MUST restart the engine for the misfire to go away. ... in an expert to do that test, but it might be worth it to prove/disprove the injectors being thecause. 0 ... The first is that the car should run fine even on cold starts.

Engine misfires when cold but runs fine after warming up few ...

https://answers.yahoo.com/question/index?qid...
Mar 24, 2009 - They also gave it to me because of this misfire problem it has. ...Engine misfires when cold but runs fine after warming up few minutes later? ... and you start next morning will also cause a misfire until it burns off the coolant.

"Miss/splutter" with cold engine, but fine when warm? M103 / also ...

www.peachparts.com > ... > Tech Help
Jul 13, 2011 - My moms old 300SEL (with the M103) that was once my car is now my "work car" again as she is getting a brand new SUV very soon.

Cold start misfire solved (finally!) - Bimmerforums


Dec 16, 2015 | Cars & Trucks

1 Answer

Polo 1.4 petrol 2007 poor ideling at cold starting


Sounds like you have a misfire before the car is heated up properly. Because it runs well after warmed up, I'm thinking that your fuel system, and compression are good. The only other thing that could cause a misfire is an ignition problem. Most likely you have a spark plug that is fouled and does not work well or at all when the engine is cold, but when it warms up to the proper temp it self-cleans and begins to function again.

Another possibility is bad fuel that does not atomize easily when the engine is cold. I would change whatever hasn't been changed in awhile. Spark plugs or fuel.

Oct 16, 2014 | Cars & Trucks

1 Answer

Misfires when cold


Just means it isn't warmed up yet when sputters and misfires. Most likely a bad connection on the temperature sending unit in the engine or that sending unit is faulty. This sending unit tells the computer when engine is warm or cold and has to be functional. When working properly, it tells the computer to put engine in cold start mode, which it is not doing. The sensor is stuck in open position or warm mode and not giving the engine enough fuel when cold making it misfire and sputter. Fix that and you'll have no other problems with revving either.

Mar 07, 2014 | 2005 BMW X5 4.4i

1 Answer

2000 tundra v6 5-speed cold start truck runs great, park it for 20-30 min it will start fine but after going 1/4 mile it dies, looses power. pull over and it will backfire and sputter until it eventua


bad need of a tuneup? like new spark plugs, ?
172 , is 02 rich/ lean warning. this one is low oxy for rich.
this code can just be a victim. for sure , with misfire.
means 02 sensor stuck at rich,
what is water temp in engine coolant, at failure? less than 150F?
could be lots of things.
leaking injectors, bad fuel.
injector sticking> causing misfire.
id use a scan tool and watch all sensor when it fails.
too high fuel pressure.
misfires cold, but only luke warm cold starts not fully cold.

just one DTC, no P0300 or 30x misfire codes, not even P0300 pendings?

Jan 31, 2014 | 2000 Toyota Tundra

1 Answer

Runs good cold,runs bad when it warms up


misfire is bad timing
check cam time.
check spark timing.
bad timing causes backfiring..

did you put the spark wires back like you found them or better the correct firing order? if not it backfires.
last is lean backfire.

Jan 07, 2014 | 1995 Toyota Camry

1 Answer

Cold engine Misfire


A 2008 mercury what? What is the model and engine size?

Apr 08, 2017 | 2008 Mercury Sable

1 Answer

Rough idle jetta 2001 1.8t when it's cold codes p0300 and p0302


p 0300 is random misfires and 0302 is no 2 cylinder misfire
most misfires are from dirty injectors rather than plugs
run a quality injector cleaner and see if there is improvement

May 03, 2017 | Cars & Trucks

1 Answer

I have a renault clio 1.4 R reg it misfires


misfire could happen if you have a leak in the intake or exhause valve , or if your engine running rich thats mean too much fuel coming to the engine . you should check oxygen sensor

May 31, 2009 | 2005 Renault 181

1 Answer

Engine misfires, power loss when warm and under load


What grade of you do you have ? must be 5/30 fully synth or it breaks down when hot and makes for a misfire.

Apr 02, 2009 | 1998 Isuzu Trooper

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