1989 pontiac grand prix 2.8L no injector pulse.

1989 PONTIAC GRAND PRIX
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DEAN STREY
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  • 1 POST
replaced cps,ecm,icm,unplugged tps, still no injector pulse. when i replaced the ecm with a used part it fired up one time and then nothing again after that. tried 3 other ecms, 2 of them ran in other cars. IT HAS SPARK BUT NO INJECTOR PULSE????????
Jan 8, 2007 at 3:58 AM
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CARUNDELL
  • ✓ASE Certified Mechanic
  • 602 POSTS
  • ASE Certified Mechanic
[quote:d113802d87="dean strey"]replaced cps,ecm,icm,unplugged tps, still no injector pulse. when i replaced the ecm with a used part it fired up one time and then nothing again after that. tried 3 other ecms, 2 of them ran in other cars. IT HAS SPARK BUT NO INJECTOR PULSE????????[/quote:d113802d87]

Hey dean,
Lets get back to some basics, verify good ground for each injector, verify each injector has adequate 12v supply voltage. Get back to me!

Chris
Jan 9, 2007 at 3:17 PM
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