Turns over wont start

Tiny
STANLEY ADAM
  • MEMBER
  • 1998 CHEVROLET CAVALIER
  • 2.2L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 140,000 MILES
No spark, plugs no power, fuel pump relay in engine fuse box and no power to the ignition, PCM/IGN. Alarm fuses in fuse box in the car all the rest of the fuses have powering both boxes it runs great otherwise. It just started this having the issues. Help!
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Tuesday, September 27th, 2016 AT 8:26 PM

7 Replies

Tiny
AL514
  • EXPERT
So little confusing here, does the car run or not? If you are saying the car does not run and has no spark, no power to fuel pump relay and ignition switch. The power to the PCM is most likely your problem, check for power and a good ground at the PCM itself. I use to own a cavalier, the PCM is very easy to get to, it is in the engine compartment in the rear of the pass side near the firewall. Here is a diagram, the power and ground wires are highlighted in yellow. Pin#18 and #20. Pin 20 should be have power at all times. Hope this helps.
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Wednesday, September 28th, 2016 AT 3:26 AM
Tiny
AL514
  • EXPERT
If you need any other diagrams just or questions just ask, =)
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Wednesday, September 28th, 2016 AT 3:27 AM
Tiny
STANLEY ADAM
  • MEMBER
PCM power and ground are good still. No power to those fuses still. Cranks over great could the crank sensor or module and coil packs have any thing to do with it?
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Wednesday, September 28th, 2016 AT 12:32 PM
Tiny
STANLEY ADAM
  • MEMBER
What about ignition?
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Wednesday, September 28th, 2016 AT 12:36 PM
Tiny
STANLEY ADAM
  • MEMBER
You guys have not answer my last two questions.
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Wednesday, September 28th, 2016 AT 2:54 PM
Tiny
RENEE
  • ADMIN
Hello Stanley,

I have sent a message to AL514 he should be getting back to you shortly. Please be patient as this is a Free site and we have a very large a mount of questions coming into the site daily.

Thank you for visiting 2CarPros.

Sincerely,

Renee
Admin
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Wednesday, September 28th, 2016 AT 3:33 PM
Tiny
AL514
  • EXPERT
Hello, sorry for the delay. My last response got erased by accident. Here is a wiring diagram of the ignition switch. As you can see the 20amp IGN fuse and the 10amp PCM/IGN fuse are on a shared circuit along with the 10amp Alarm fuse which you said had power. These fuses are all under the dash to the left on the drivers side fuse box. They are all fed by the Pink wire coming out of the ignition switch. Check this pink wire at the ignition switch for power with the key in the Start and Run position. If you don't have any power (12Volts) then the ignition switch is bad (but since you said you have power at the Alarm fuse, there should be power there). If there is power running on the Pink wire down to the fuse box, then you need to check out the box itself for any corrosion or damage on the back side of it. The IGN fuse runs to the ignition control module and the PCM/IGN fuse runs to the PCM. This would explain your no spark or fuel pump relay power. You can see on the diagram how the Alarm, IGN and PCM/IGN all share that power circuit in the fuse box. The PCM/IGN fuse power comes out of the fuse box on a Pink/White wire that changes to just a Pink wire and runs to Pin#19 at the PCM. So check the pink wire coming out at the ignition switch first for 12volts and make sure its getting down to that inside fuse box, the check the box next. My cavalier had a bad ignition switch causing a no start like this, and also the plug for the ignition switch is on the opposite side of the steering column then the key/tumbler assembly.
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Thursday, September 29th, 2016 AT 4:18 AM

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