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2003 Chevrolet Malibu Repair Question


Topics covered: Fuel pump, Spark, Engine.
Mileage: 153,000 miles.

Asked on December 4, 2011

Why would my 03 malibu just shut down in the middle of driving it

I just recently changed my spark plugs, fuel pump, fuel filter, and fuel pressure regulator. i really need to figure out what is wrong with it
Avatar Asked by jcook89

Answer

Replied on December 4, 2011

Does it restart when this happens or do you have to wait?

Tiny Answered by Jacobandnickolas (expert)
57,318 answers provided
Replied on December 4, 2011

If you have to wait

Next time it refuses to start don't wait for it to make up its mind-do below immediately to determine if its fuel or spark problem

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if okay-check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,cap and rotor,distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing

Tiny Answered by rasmataz
68 questions asked