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Continuing Idle Issue ... can not get down past 760 RPM w/ IAC disabled 200 1988

posted by  hawkeye on  Sun Sep 1 21:51 CST 2013
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last visit: Wed Oct 22 16:44 CST 2014
[RELATED]

I tried to fix a similar problem on my friend's 88 to no avail. We took it to the best shop in town and they told us they would no longer work on pre 1990 Volvo cars because of problems with the wiring harnesses. They said that they would fix one thing and in the process would mess up something else.

I believe he plans to sell the car. Not only could the idle problem not be resolved we discovered the heater core had been bypassed.

I wonder if your problem is related to the harness. Is it possible that the signal from the AMM is not making it to the ECU?

Hawk






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