Question about 2001 Audi A4
My car has a random misfire code p0300,p0301,p0303,p0304.i have change all spark plugs ,coils and my CEL keeps on coming back on .strange thing is it comes on when my car is hot like after i drive it for 20 mins on the road then CEL flashes then runs rough no power,,then CEL goes solid then car drives good ...then after CEL lights goes off. i really need some help
Do a compression test then do a combustion pressure test if all good computer is questionable
Posted on May 25, 2009
Have you changed the coils at each misfing cylinder? I had a misfire on cylinder 3, running really rough with flashing check engine light when engine was warm. The Check Engine light did come on solid after the misfire cleared. Swapped the coil with another cylinder and the misfire code followed the coil, so I replaced the suspect coil with a known good one. Voila, problem solved. My vehicle is a 2001 Jetta 1.8t, and from what I've read on the internet, failing coils is a very common problem. Good luck.
Posted on Jun 25, 2009
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Posted on Jan 02, 2017
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