Major problem....
03-01-2008, 08:42 PM
#1
Major problem.... well ive got a few people helping me with this but it never hurts to get some more ideas...
car* 99 TA A4....motor is strong and tranny is strong...
new...front o2s, knock sensors, map sensor, maf sensor itself is good, new wires, new plugs, new coils...
problem* car when heated up runs like total garbage, will not hold a custom or stock tune...dumps fuel, has really weak spark, VERY bad timing, car has a horrible idle...sputters and chokes when rising rpm...
other then a bad wire to a sensor, bad pcm, or something ive missed i have no clue whats going on...no codes...been like this for the past several weeks...
car* 99 TA A4....motor is strong and tranny is strong...
new...front o2s, knock sensors, map sensor, maf sensor itself is good, new wires, new plugs, new coils...
problem* car when heated up runs like total garbage, will not hold a custom or stock tune...dumps fuel, has really weak spark, VERY bad timing, car has a horrible idle...sputters and chokes when rising rpm...
other then a bad wire to a sensor, bad pcm, or something ive missed i have no clue whats going on...no codes...been like this for the past several weeks...
03-03-2008, 03:19 PM
#2
You say say it runs like poo when warmed up? maybe a radiator or coolant passage way is blocked. But it kinda sounds like a bad pcm if it wont hold a tune. And its sounds like you have changed just about everything you can short of the engine. I dunno how you would test for a bad pcm other than switching it out but good luck. Hopefully its something stupid and inexpensive.
