Car shuts down

Tiny
DORENE
  • MEMBER
  • 1998 CHEVROLET MALIBU
  • 18,000 MILES
My car shuts down with no warning driving at 50 mph when try to start it cranks over full power but wont start up, after about 1 min of sitting it starts up. I changed the fuel filter and spark plugs and I can hear the fuel pump when I turn key to on position.

Can it be the coil packs or no?
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Friday, December 23rd, 2011 AT 11:21 PM

4 Replies

Tiny
RASMATAZ
  • MEMBER
http://www.2carpros.com/articles/car-cranks-but-wont-start

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
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Friday, December 23rd, 2011 AT 11:30 PM
Tiny
DORENE
  • MEMBER
I do hear the fuel pump come on. What is the sending unit? My fuel is working ca it still be faulty?
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Saturday, December 24th, 2011 AT 12:08 AM
Tiny
RASMATAZ
  • MEMBER
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
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Saturday, December 24th, 2011 AT 2:32 AM
Tiny
DORENE
  • MEMBER
I do hear the fuel pump come on and yes there is pressure it has been checked. I changed the fuel filter, spark plugs, module, coil packs, wires this morning. The car is running so good now power not sluggish. When I stopped to run in the store today I got back in car and it turned over but wouldnt start. Waited 20 min. And it stated right up. The other day when I was changing the plugs one of then was filled and emerged in oil from the gasket leaking I do know that this plug remains submerged in oil. Now what could it be?
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Saturday, December 24th, 2011 AT 10:07 PM

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