1987 Oldsmobile Ciera

Tiny
WILLSMASTER
  • MEMBER
  • 1987 OLDSMOBILE CIERA
Engine Performance problem
1987 Oldsmobile Ciera 6 cyl Front Wheel Drive Automatic

1987 olds cutlass 3.8 litre. Good fuel pressure, no spark.I replaced the crankshaft and camshaft sensor, still no spark.I have a good battery voltage at the crank sensor connector(harness side).I have a good 5 volt reference at the crank sensor, also a good ground. If I take a test light and touch the 12 volt wire( harness side), the coil fires spark. If I touch the 5 volt ref. Wire with the test light the injectors fire.I plug the connector back in to crank sensor, still no spark or injector fire?
Friday, July 17th, 2009 AT 3:39 PM

3 Replies

Tiny
DOCFIXIT
  • MECHANIC
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Hi
Have you checked for codes? Locate ALCL under dash near steering collumn. Jumper together last two terminals top row. Key on engine light will flash count flashes like flash pause flash flash = 12.
Also try this unplug cam sensor see if it syarts.
Let me know
Thanks for donate
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Monday, July 20th, 2009 AT 11:15 AM
Tiny
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I did check for codes, there aren't any in memory.I unplugged the cam sensor, nothing.I'm thinking the ignition module is bad.I have 2 power wires coming in to the module, both pink & black. The book is telling me that circuit # 430 ( pink and white wire)from module to the ecm, should fluxuate between 1 and 7 volts.I have no fluxuating voltage coming out of the module on that cicuit. Would'nt that indicate a faulty module?
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Monday, July 20th, 2009 AT 2:32 PM
Tiny
DOCFIXIT
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That's what I was thinking and needed to find no codes and if it would not start with cam sensor unpluged verifys the module.
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Monday, July 20th, 2009 AT 2:47 PM

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