1992 Chevy Corsica

1992 CHEVROLET CORSICA
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CRAZYMAN6677
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Electrical problem
1992 Chevy Corsica 4 cyl Front Wheel Drive Automatic

i have spark no injector pulses
Sep 18, 2009 at 4:02 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
I'd check for an rpm signal. With the key on, you do have voltage at the injector? The rpm signal comes from the crank sensor, close to or underneath the ignition module.
Sep 18, 2009 at 4:27 AM
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CRAZYMAN6677
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scan tool shows cranking rpm it shows voltage on both wires to injectors
Sep 18, 2009 at 5:24 AM
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CRAZYMAN6677
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  • 3 POSTS
had autozone check ignition module said it is ok
Sep 18, 2009 at 7:57 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
Use a noid lite on injector plug, should be a pulse, engine cranking.


With all the injectors unplugged, key on, there shouldn't be voltage on the ground circuit, in my opinion. Maybe the ground circuit is shorted to voltage somewhere?
Sep 18, 2009 at 8:41 AM
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