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I have a 1992 Pontiac Bonneville 3.8 Supercharged. When the mass air flow sensor is plugged in the cars RPMs surges when it idles. If I unplug the MAFS the RPMs raise to about 1,000 rpm. I put a brand new TPS and IACV on it.
I have a 1992 Pontiac Bonneville 3.8 Supercharged. When the mass air flow sensor is plugged in the cars RPMs surges when it idles. If I unplug the MAFS the RPMs raise to about 1,000 rpm. I put a brand new TPS and IACV on it. So would that mean the MAFS is bad? If not what is wrong? Or what should I change?
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Jim O'Neill - Chino Autotech Inc., Auto Club SoCal AAR
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