idling issue urgently needed info

  #1  
Old 10-26-2005, 09:57 PM
1st Gear
Thread Starter
Join Date: Sep 2005
Posts: 19
Default idling issue urgently needed info

Folks,
I have a1991 Audi 100 5 cylinder. Is there any explanation why my motor idles up and down similar to oscillating
the car runs fine other than that issue.

Please reply ASAP

[8D]
Mikerike
 
  #2  
Old 10-26-2005, 11:04 PM
2nd Gear
Join Date: Mar 2004
Location: Swamplands of NJ
Posts: 761
Default RE: idling issue urgently needed info

Probably the ISV is dirty.
 
  #3  
Old 10-27-2005, 07:28 AM
1st Gear
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Join Date: Sep 2005
Posts: 19
Default RE: idling issue urgently needed info

Offramp

Could you give me a clue as to what it looks like and location.
I have ordered a service manual but it has not arrived yet.

Your assistance is greatly appreciated.

mikerike
 
  #4  
Old 10-27-2005, 01:28 PM
2nd Gear
Join Date: Mar 2004
Location: Swamplands of NJ
Posts: 761
Default RE: idling issue urgently needed info

ISV location.

[IMG]local://upfiles/1095/3749BAFF04E4439F85566152AEF4DC4F.jpg[/IMG]
 
  #5  
Old 10-27-2005, 09:11 PM
1st Gear
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Join Date: Sep 2005
Posts: 19
Default RE: idling issue urgently needed info

Offramp
Thank you for valued information. Very easy to locate and get to.
What would be the proper procedure to clean the ISV.
It appears that the electrical connector should be disconnected and it appears that the rubber boot should slide off.
I should be able to clean the unit with NO flash-- an elctrical contact cleaner.
Does this sound correct.


Thank again for your assistance,
mikerike
 
  #6  
Old 10-27-2005, 10:56 PM
2nd Gear
Join Date: Mar 2004
Location: Swamplands of NJ
Posts: 761
Default RE: idling issue urgently needed info

I would use brake or electrical contact cleaner first, if that doesn't help try using carb and choke cleaner. Plug one hole spray some cleaner, plug the other and shake it a few times, pour the contents out and repeat a few more times until clear cleaning agent comes out. Don't poke inside with anything as this can cause the vane to stick. If you do a search on this forum you will find plenty of suggestions and discussions.
 
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