Mechanics

VOLVO S70 ROUGH IDLE PROBLEM

1999 Volvo S70 • 140,000 miles

Rough idle. ECM light on. Cleaned throttle & changed coils 1st still rough idle. Removed ECM. How can I test the ECM to verify that's the problem? I don't think it could be anything else at this point since everything else checks out fine. If I need new ECM & get it myself, will I have to have it programmed?
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LBeckford
January 28, 2013.




What code(s) is the ECM throwing? If you get a new/used ECM, it shouldn't have to be reprogrammed. Usually the ECM will tell you if it is toast by giving you a code.

Blaze45
Jan 28, 2013.


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