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Alex818
05-01-2008, 08:52 AM
Hey guys
i had a evo intake on my 2001 a4 avant and it was running great. but i had to get the car smogged so i put the OEM one back on and now it idles really rough. i checked the sensors and everything looks fine. the car almost stalls if left on. what the hell did i to wrong?

thx

Alex

Alex818
05-01-2008, 09:09 AM
and now the check engine light is on...

Alex818
05-01-2008, 10:36 AM
bump

i've tried everything. has anyone ran in to this kind of problem?

any response would help

onemoremile
05-01-2008, 10:40 AM
Try a throttle body adaptation. Turn the key to the on position without starting the car. Let it sit for a minute or two and then start the car. That may help.

You may have a loose vac line somewhere which could cause a rough stumbly idle.