fuel pumps

2003 CHEVROLET MONTE CARLO
103,941 MILES • 6 CYL • 2WD • AUTOMATIC
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How do You Check a fuel pump
Aug 1, 2011 at 11:25 AM
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JDL
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Start by using a gage and check fuel pressure.
Aug 1, 2011 at 4:17 PM
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JDL
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Just to add, engine cranking, do you have spark at the plugs?
Aug 1, 2011 at 4:22 PM
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CADIEMAN
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put fuel in the throttle body to see if it runs also.you need to check the fuel pump fuse and for fuel pump pressure as jdl said.
Aug 1, 2011 at 5:46 PM
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JDL
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If you unplug the fuel pump relay, does terminal B1 have voltage, should be hot all the time, note diagram. Use a voltage tester to check for voltage. If you use a jumper wire between terminals B1 and A3, where the relay plugs in, the pump should run. You don't need to use the key. If it won't run, check voltage and ground at fuel pump motor connector. Gray wire is voltage, black is ground. With engine cranking, if you have good voltage and ground at the fuel pump, with no pump action, suspect the pump.
Aug 1, 2011 at 5:58 PM