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Old 07-01-2016, 09:41 PM   #1
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Question 2000 cavalier won't start

I have a 2000 cavalier, 2.2L that turns over great, but won't fire.
It will fire up when I spray starting fluid in the intake.
So far this is what I have done:
Checked the spark at the plugs, seems good
Replaced plugs and wires
Replaced the fuel filter
Replaced the crankshaft position sensor
Replaced the fuel injector relay in the fuse box under the hood
I can hear the fuel pump turn on when the key is turned on, so I'm assuming the fuel pressure is fine (no easy way to test on this car)

My next guess is the CMP

Any thoughts to help me get this beast running would be appreciated!

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Old 07-01-2016, 10:20 PM   #2
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If the car starts and runs, as long as you spray carb cleaner into the intake, then there is nothing wrong with the coils, wires, plugs, crank sensor, etc....

Either you have no fuel pressure, or the injectors are not firing....

If there is no schraeder valve somewhere on the fuel rail, then you need a special setup to test pressure.....an easier test would be to disconnect an injector harness one at a time and attach a noid light to the harness, crank the vehicle, and see if the light flashes during cranking.....if it doesn't on all of them, take a test light and attach it to one of the grey wires in any of the injector harnesses...it should be on steady during cranking......if yes, then you either have a PCM problem, or a SECURITY problem.....A scan tool, capable of reading "B" codes, might find B2958 or B2960, indicating a SECURITY problem.....

You might try this, pull the ebrake, turn the key to start, let it crank and then release the key to the "on" position.......the SECURITY or THEFT light will be on.....after 10 minutes, it should go out......turn key to off, wait 5 seconds, then attempt to start car....if it starts, this is only a temporary fix....it will happen again....when is the question.....the usual problem is a PassLock sensor or connnection at the BCM.....
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