Question about 2000 GMC Sonoma Extended Cab

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2000 gmc sonoma service engine light on and flashing. Bogs down during start up and while sitting. Also going through gas really fast.

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SCAN IT. TO CHECK THE EGR VALVE. MAKE SURE ITS NOT STUCK OPEN. CHECK THE MAP SENSOR. TPS SENSOR AND COOLANT SENSORS.THEY WILL CAUSE FUEL PROBLEM.CHECK PVC VALVE.MAKE SURE ITS STILL IN PLACE.AND NOT STUCK OPEN.ALSO CHECK VACUUM HOSE TO FUEL PRESSURE REGULATOR.IF IT HAS GAS INSIDE VACUUM LINE YOU HAVE A RUPTURE FUEL PRESSURE REGULATOR.

Posted on Sep 12, 2009

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Sound like the O2 sensor or PCV... take the car to autozone and they will use the ODB reader on it for free.I suspect one or the other sensor. How many miles do you have on it?

Posted on Sep 12, 2009

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