Tps sensor and mass air flow senspr low voltage. Help gurus.
So I did a cat delete replaced all spark plugs
and wires now have a tps sensor low
voltage and mass air flow sensor low
voltage and random multiple misfires.
Could it be something simple or am I
tearing into the firewall to find the break? I
can unplug both sensors and the car stays
running plus two others idle sensor maybe
and another. 2002 grand prix 3100 series
Unplug Both o2 sensors upstream and down stream One at a time. While you monitor the mass air, and Tps signal voltage you will find that one of them, the heater circuit is shorted.
How do I fix that? Disable sensor 2?
Just unplug them one at a time
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