Mechanics

THE CAR WILL NOT START

2002 Saturn L100 • 110,000 miles

I checked fire at plugs and replaced plugs
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Ddinwiddie
December 24, 2011.




Tell me what you have? Do you have spark?

Tiny
Rasmataz
Dec 24, 2011.
Yes

Tiny
Ddinwiddie
Dec 24, 2011.
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

If both fuel and spark is present-check the valve and ignition timing, this will lead you to problems

with compression and valves opening and closing at the wrong time/broken or jumped timing

belt/chain.
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Tiny
Rasmataz
Dec 24, 2011.
Just to add to this one is the security light on solid or flashing?If not I would check to see what the actual fuel pressure is. Also is there anything inop like the fuel gauge power door lock keyless entry etc?Anything strange happening?Also those engines are known for breaking timing chains and timing chains jumping time. ALso any codes?

Saturntech9
Dec 24, 2011.

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