Question about 1986 Audi 4000 CS

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I have an '87 Audi 4000CS Quattro with turbo. For some reason the car idles really high (around 3000) and also when I'm driving on the highway the car will lose power and shut off and the fuel pump will get loud. It's a new fuel pump though. My friend said when my car was stalling it smelled like oil, he was driving behind me. Any help would be much appreciated. We bought this car for 1000 of Craigslist we're just hoping we didn't buy a lemon.

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Posted on Jan 02, 2017

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SOURCE: ok i have a 1990

Hello, I used to own a 1989 audi 200 turbo. These cars have a rather complicated fuel injection system called constant injection system (CIS 2). They can be difficult for most mechanics to figure out, unless they are already familiar with it. If you do bring it to a mechanic, try to find one that is familiar with these cars. And don't be afraid to get a second opinion. I had one mechanic claim that my car needed several thousand dollars worth of parts, another was able to fix it for under a hundred. The only suggestion I have is that it sounds like it is vacuum related. Good luck!

Posted on Aug 08, 2008

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SOURCE: Oil questions for 2003 Audi A6 Quattro

oil type is either 5W-30W or 10W-30W depending how cold your climate is, as far as having the car properly taken care of, the Audi dealer is the best option, they have all the proper tools and service info needed to keep the car in top running condition.

Posted on Oct 13, 2008

  • 6 Answers

SOURCE: no acceleration,audi 1.8t,runs like no boost

have you tried cleaning out the throttle body as i had a similar problem and this worked

Posted on Nov 29, 2008

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SOURCE: 87 audi turbo cs 5000

Could be: fuel warm-up valve,
idle-speed stabilisation valve

Posted on Dec 28, 2008

  • 1 Answer

SOURCE: 1996 Audi A4 Quattro has a noisy rear differential

It's the wheel bearing. Guaranteed. Just replaced mine. Go to Audiworld tech articles for step by step instructions on how to test the wheel bearings. They must have been put in wrong last time or they just went out again.

Posted on Jan 28, 2009

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