Troubleshooting map sensor code


Check engine light is on reading code po100 for a 1999 altima. When accelerating sometimes car will start surging real hard like its about to stall. Im checking my map sensor wire harness and I am getting 5 volts from one wire but both of the other two wires are going to ground. Any suggestions?

This sounds like fuel pump failure

Mass air flow not MAP ?
Nissan Infiniti Mass Air Flow Sensor Testing Replacement P0100

I HAD THE SAME PROBLEM WITH MY CAR. 93 LS 400. THAT WOULD BE YOUR FUEL FILTER OR THE FUEL PUMP GOING BAD. TRY CHANGING THE FILTER FIRST. THE DEALER TRIED TO CHARGE ME $980 TO CHANGE FUEL PUMP.


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