1988 Buick Lesabre No ignition Spark

1988 BUICK LESABRE
150,000 MILES • 6 CYL • FWD • AUTOMATIC
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STICKMAN1
  • MEMBER
  • 2 POSTS
wont start. No spark at Coil pack. Replaced with no success. No computer code (other than diagnostic 12 ) Check ICm with 12 volt test light at coil pack contacts to Ground. No steady or flicker light. Tried 1997 ICM and coil pack and noted flicker on one terminal and steady on at other under each coil but no spark. I'm assuming different wiring at ICM. Any other ICM ohm or other shade tree test.
Thanks
Dec 27, 2009 at 12:16 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Check and test the crankshaft position sensor


https://images.2carpros.com/forum/automotive_pictures/12900_cps_37.jpg

Dec 27, 2009 at 8:26 PM
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STICKMAN1
  • MEMBER
  • 2 POSTS
thanks, replaced ICM. Car fired poorly until computer adjusted. Thanks for the help
Dec 30, 2009 at 2:47 AM
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