2003 Chevy Cavalier engine will crank but will not start.

Tiny
P_RODES
  • MEMBER
  • 2003 CHEVROLET CAVALIER
  • 4 CYL
  • FWD
  • MANUAL
  • 80,000 MILES
Why will my 2003 Chevy Cavalier crank but not start? The fuel pump is good and so is the wiring going to the fuel pump. All the fuses and relays are good too. What other problems could be keeping it from running and starting?
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Wednesday, January 27th, 2010 AT 3:51 PM

4 Replies

Tiny
RASMATAZ
  • MEMBER
Cranks but no start condition:

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine at least 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, 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, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it.

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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Wednesday, January 27th, 2010 AT 3:59 PM
Tiny
P_RODES
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It is not getting any fuel to the fuel rail. And when it does it's barely any at all. Could this be due to the PCM?
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Wednesday, January 27th, 2010 AT 4:02 PM
Tiny
RASMATAZ
  • MEMBER
Check the fuel pressure to rule out the fuel pump
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Wednesday, January 27th, 2010 AT 5:28 PM
Tiny
P_RODES
  • MEMBER
I bypassed everything and hooked the fuel pump straight to the battery and it pumped out fuel. Do you know how to reset the security system on a 2003 Chevy Cavalier. Just found out that may just dang well be the problem.
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Wednesday, January 27th, 2010 AT 5:34 PM

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