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Re: Mystery Engine Part May Be Causing Problem 850 1995

posted by  someone claiming to be Dave the Volvo Tech on  Thu Mar 8 15:31 CST 2001 [RELATED]

Michael-

I think you are refering to the IAC (Idle Control Valve), the device that sets the idle speed irregardless of engine load. (Gear position, AC, ect) It is normal for it to hum for a short time after the engine is switched off (maybe 10 seconds) because the control unit is still powered up after the key is switched off.

Dave the Volvo Tech

'99 V70R AWD, '93 854 GLT, '82 242 DL





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