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Map Sensor
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Question
pitterpat
98 GMC Sierra, 2wd 5.7
Did intake manifold gasket replacement. Had multiple misfires 4 & 8cyl. Took plenum off removed spider, removed each injector individually cleaned & put back in same spot. Put spider /injectors back in. More problems, rough idle, acceleration hesitation at start up from light, had to throw into Park @ light to keep from dying; threw MAF sensor code from scan @ Advance Auto . Cleaned MAF with MAF cleaner, still threw code. Replaced MAF (NAPA) , took to Auto Zone for scan showed MAF or Map sensor.
Yesterday tested volts to Map sensor 4.72 volts, not 5 but close.
Now I need to decide if it is the MAP sensor or not. Could it be anything else. My budget is TIGHT I don't want to throw in another part and that be the problem.
Any help is appreciated.
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