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Idle Air Control Valve, function, cleaning, etc. 700 1991

posted by  FitzFitzgerald on  Wed Mar 31 17:29 CST 2004
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last visit: Wed Jun 25 23:15 CST 2014
[RELATED]

I think you're supposed to see a cold idle of around 1,000 to 1,100 RPMs or so until the car warms up a bit (determined from the coolant temp sensor). However, there is little info available on the subject of cold-idle speeds for 200/700 Volvos. The service manuals and Haynes books show how to set the base idle speed with the engine warm, but nobody really discusses the cold-idle behaviors. There may also be a difference in cold-idle behavior depending on the computer. Switching from a 511 or 544 to a 554 should change the cold-idle-mixture, and thus might change the cold-idle-speed as well.

Sorry, I don't have any more info on the subject right now. (but I'm curious myself)
Fitz Fitzgerald.






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