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Keeps blowing ignition fuse

Tiny
TREVDOG71
  • MEMBER
  • 2005 CHEVROLET COLORADO
  • 3.5L
  • 5 CYL
  • 4WD
  • MANUAL
  • 150,000 MILES
It left me stranded for hours. I go to start it and it blows fuse #23 ignition. I tried all the tricks for the ignition, even replaced the electrical component on the back of the ignition. I have not messed the other part. Thinking that might do it, nothing. Same thing blown fuse. So I am thinking bad ground, direct short. Help
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Monday, August 13th, 2018 AT 3:40 PM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hello,

That fuse power the ignition coils and clutch neutral switch. Can you please unplug them and replace the fuse to see if it still blows? It sounds like one of the coils has shorted here is a wiring diagram so you can see as well.

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Thursday, August 16th, 2018 AT 12:28 PM
Tiny
TREVDOG71
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Yes it was the coils.
Thanks
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Tuesday, August 21st, 2018 AT 9:02 AM
Tiny
KEN L
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  • 48,363 POSTS
Good to hear, please use 2CarPros anytime we are here to help.

Cheers, Ken
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Tuesday, August 21st, 2018 AT 10:57 AM
Tiny
TREVDOG71
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Update: Drove the truck around the block and it is still doing it.
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Wednesday, August 22nd, 2018 AT 11:47 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
That fuse supplies power to the AC compressor relay and the park/neutral safety switch. Can you leave the HVAC off to see if it still does it?
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Thursday, August 23rd, 2018 AT 2:11 PM

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