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IAC valve and TPS testing


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to test the iacv ,with all loads off,engine @ operating temp. ,turn on your a/c ,headlights (hi beams)

you should hear the idle go up.As for the tps,its integrated with the throttle body.Only testing,if there is no code,is for excessove wear or binding at the throttle plate area.

Does it rev gradually from 800 rpm to 1800 rpm ?

Or does it idle spiratically 800 rpm to 1800 rpm ?

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