Question about 1993 GMC Sierra K1500

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I am working on a friends car it was idleing up then down up then down i took the I.A.C sensor off and cleaned it with some throttle body cleaner. and it fixed that problem but one other problem it is having is when you press the gas pedal it bogs down and wont rev up im thinking it might be the fuel pump but im not to sure. i know that it is making some sounds.

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Ck the tps

Posted on Nov 17, 2009

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Could also be a fuel injector, ohm out the injectors, if there is a bad one the value will be way off.

Posted on Nov 17, 2009

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