1995 GMC Jimmy truck start when it wants to

Tiny
JASON9591
  • MEMBER
  • 1995 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 190,000 MILES
This truck is making me crazy still wont start but it does start in morning when it don't start the coil shocks me and the plugs get no spark but when it runs it don't shock me ihave changed coil 3 times along with wire, cap, rotor and control module all bought from dealer all work perfect when truck runs. Please help i'll take any ideas
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Saturday, May 24th, 2008 AT 6:49 PM

7 Replies

Tiny
KEN
  • ADMIN
Its sounds like the pick up coil in the distributor has failed, please replace and get back to me.
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Sunday, May 25th, 2008 AT 10:29 PM
Tiny
JASON9591
  • MEMBER
I have replaced the whole distributor with another one I started to to replace the whole engine wiring harness because ever since I play with harness the truck won't start at all I have replaced every thing at least 3 times that has to do with engine getting spark. The harness is the only thing left i'll keep in touch
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Monday, May 26th, 2008 AT 7:33 PM
Tiny
KEN
  • ADMIN
Is there power at the coil when not working? Try an ignition swtich. Please let me know
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Tuesday, May 27th, 2008 AT 11:04 AM
Tiny
JASON9591
  • MEMBER
There is power at the coil when it don't start. I also noticed that when it ran the transmission was not shifting right sometimes and it would missfire sometimes when engine got warm. I'm going to get wiring harness from junk yard. I think that one of the connectors at computer are bad on old one will find out soon enought this truck has been to 3 different mechanics including the dealer none of them could fix it and i'm not paying the dealer to put new wiring harness in. Puting in the harness dosen't look fun it runs throught out the whole engine comparment and all underneath if you have any tips on doing this please let me know thanks for your help
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Tuesday, May 27th, 2008 AT 8:08 PM
Tiny
KEN
  • ADMIN
Go slow and tag the wiring connectors as needed. Please let me know.
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Monday, June 2nd, 2008 AT 1:13 PM
Tiny
JASON9591
  • MEMBER
Replaced wiring harness truck runs better than it ever did it sounds much smoother not a fun job but I got it done. The idle is up high I think I have a vacum leak somewhere but it run good
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Friday, June 6th, 2008 AT 9:39 PM
Tiny
KEN
  • ADMIN
Good to hear!
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Friday, June 6th, 2008 AT 9:57 PM

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