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Audi 80, 90, Coupe: 1988-1992 (B3) 1990 90 Quattro Rough idle


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Last Post: Jun 2, 2013 10:57 PM Last Post By: buff8622
Leopard

Posts: 2
Registered: 04/06/08
1990 90 Quattro Rough idle
Posted: Apr 6, 2008 2:33 AM
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I have had a problem with the idle since I bought the car. It will not idle when cold or when first started. I also have a problem with the rad fan blowing both 30amp fuses. any ideas would be great.
graymarki

Posts: 5
Registered: 12/11/06
Re: 1990 90 Quattro Rough idle
Posted: Apr 9, 2008 8:41 PM   in response to: Leopard in response to: Leopard
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Sounds to me like your cold start valve isn't functioning. This is just another fuel injector that sprays fuel into the intake manifold when you first crank the engine when cold. If this isn't working, then you will never get it to run.
Leopard

Posts: 2
Registered: 04/06/08
Re: 1990 90 Quattro Rough idle
Posted: Apr 9, 2008 10:29 PM   in response to: graymarki in response to: graymarki
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Can you tell me where I an find this valve ? How to test it ? Or what it looks like. as much help as possible would be great. I have read about the ISV and I have cleaned that But any other info would be great. I also have a problem with The MFTS so I will be changing that this weekend. Can you tell me what could be causing the two 30amp fuses for the cooling fan to keep blowing? again thats for the help.
buff8622

Posts: 1
Registered: 06/02/13
Re: 1990 90 Quattro Rough idle
Posted: Jun 2, 2013 10:57 PM   in response to: Leopard in response to: Leopard
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Did you ever figure this out? I just got one and its got a small issue starting unless i hold the idle over 2000rpm for about 15-30 sec. Other wise it'll never start.

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