1989 GMC S15

Tiny
MOONCHILD1956
  • MEMBER
  • 1989 GMC S15
  • 4 CYL
  • 2WD
  • MANUAL
  • 38,600 MILES
When I engage my key it sparks once, it doesn't spark while the engine turns over and it sparks when I let the key out. Any ideas.
Tuesday, June 23rd, 2009 AT 11:13 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Make sure the plug to the ecm is tight. THe computer sends a stronger spark when the engine is just started to help start a cold engine and then lowers the voltage when it starts and the key is in the run position.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Wednesday, July 1st, 2009 AT 6:44 PM

Please login or register to post a reply.

Related Engine Not Cranking Over Content

Starter Not Working
GUIDE
Starter Not Working
This guide is designed to help you identify whether the issue with your non-working starter motor is due to an electrical problem or a fault within the starter motor itself...
VIEW MORE

Sponsored links