2002 Chevrolet Malibu While Driving Engine Will Shut Down Pull Out Fuel Pump

2002 CHEVROLET MALIBU
113,000 MILES
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while driving the engine will shut down pull out fuel pump relay &put back in engine fires back up does this all the time replaced fuel pump&filter fuse panel under hood $1200.00 touchnext ingnitionswitch any more ideas

Dec 28, 2012 at 4:39 PM
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JDL
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If you think it is a relay problem, swap it with another relay in the box, if the relays are the same. Have helper crank it while you visually check for spark at the plugs. Also check for injector pulse. If no spark or injector pulse, you might be losing rpm signal? Signal Comes from crank sensor.
Dec 28, 2012 at 6:47 PM
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