Engine running rough

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May 8, 2010 | 06:53 AM

Zigra

Thread Starter

Audiworld Junior Member

Joined: Jan 2006

Posts: 19

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Engine running rough

Over the past month or so my 2001 1.8t will run rough when there is heavy boost.
My CEL light has only been on only once when I kept on the gas pedal and it only flashed twice and never has been on since.
I have read some of the threads on the threads on the boards.
Was wondering if anyone could help me out a bit.
I have been to a very recommend shop many times and yet it still has not been fixed.

I have gotten the new recalled Coil packs from Audi and it still does it.
My car has been flashed, Had the speed sensor changed not to long ago.
I have 139k miles on it
I have a high flow cat with down pipe. (need to get it replaced)
I have had my throttle body cleaned out about 30k miles ago
Have not changed my spark plugs in about 50k miles
Other then that my car is stock

any help would be great.

May 8, 2010 | 09:35 AM

AudiMick

AudiWorld Super User

Joined: May 2002

Posts: 5,138

Likes: 4

From: Redmond WA

Quote:

Originally Posted by Zigra

If you knew what the code was we could probably help. Code readers are cheap, even a generic VAG.com from E-bay might help. The $50 code readers from Harbor Freight can work well also,

Why do you have a high flow cat? Is your car chipped? 50K is a lot for plugs on a chipped car.If your car is chipped do you still have a stock DV.

May 8, 2010 | 10:33 AM

Zigra

Thread Starter

Audiworld Junior Member

Joined: Jan 2006

Posts: 19

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I don't have a scanner guessing it would be a good investment.

yes the car is chipped. i am in Florida want to keep it legal if i ever want to sell it.
And yes i still have a stock diverter valve

May 8, 2010 | 04:35 PM

AudiMick

AudiWorld Super User

Joined: May 2002

Posts: 5,138

Likes: 4

From: Redmond WA

Quote:

Originally Posted by Zigra

I don't have a scanner guessing it would be a good investment.

yes the car is chipped. i am in Florida want to keep it legal if i ever want to sell it.
And yes i still have a stock diverter valve

With a chipped car you should invest in a VAG.com. I wouldn't change anything until I had scanned the car.

Many people with chipped cars run copper plugs and often change them every 5000 miles, make sure you are running the correct gap for a chipped car. The stock DV is often overwhelmed by the increased boost, an OEM TT DV valve (710N) is a common replacement as it can handle the higher boost.Not too expensive either.