1989 GMC S15 Ignition timing

Tiny
TMBOWEN
  • MEMBER
  • 1989 GMC S15
  • 4 CYL
  • 2WD
  • MANUAL
  • 28,300 MILES
I need to know what the ignition timing is on this model. Have exhausted every other possible problem, sensors, ecm, exhaust, but the Clymers manual isn't helping. Please help. I have a timing light.
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Thursday, June 4th, 2009 AT 2:52 PM

2 Replies

Tiny
BLUELIGHTNIN6
  • EXPERT
Is this a 2.5L or 2.8L engine?
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Friday, June 5th, 2009 AT 12:42 AM
Tiny
TMBOWEN
  • MEMBER
Ooops, 2.5. Found the timing degree, but not running any better. Last thing to try is changing the ignition module, then on to the shop. Or get a new vehicle.
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Friday, June 5th, 2009 AT 9:14 AM

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