No spark new coil ignition still no spark and draining my battery, why?

Tiny
KAMBAM1710
  • MEMBER
  • 1998 GMC SONOMA
  • 4.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 230,000 MILES
I was messing with the coil wire and then the truck shut off and lost spark and hasn't run since I changed the oil ignition nothing, why?
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Wednesday, August 3rd, 2022 AT 6:30 PM

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Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

Which wire on the coil were you moving around before it happened? Also, if the battery is draining, then we have to have a draw. Likely, it is from the wiring to the coil but that is to be determined.

First, let's confirm the coil is getting power. The fuse that sends power to the coil is the ECM 1 fuse in the under-hood fuse box. I need you to check that fuse and check to make sure there is power to and from it. See pic 1 below. Also, here is a link you may find helpful.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If that checks good, confirm there is power to the pink wire at the coil connector. If there is, I suspect the ignition control module may have failed.

Let me know.

Take care,

Joe

See pic below.
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Wednesday, August 3rd, 2022 AT 9:36 PM

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