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Possible short in circuit misfires and smokes when I put in twenty watt fuse

Tiny
ROB MAJOR
  • MEMBER
  • 1986 PONTIAC BONNEVILLE
  • 5.0L
  • V8
  • RWD
  • AUTOMATIC
  • 65,160 MILES
I have had problems with it lately and its driving me insane! I had a twenty watt fuse in it that controlled my cars computer, analog clock, horn, courtesy lights, floor lights etc. I was have problem while the fuse was in so I unplugged fuse. Car ran great. I put fuse back in and problem starts again! Misfires and smokes! When I take fuse back out runs fine again please help me!
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Friday, October 7th, 2016 AT 11:48 PM

8 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check for a short in that circuit it is problably not giving ecm enough power causing your problem.
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Saturday, October 8th, 2016 AT 7:26 AM
Tiny
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  • MEMBER
  • 5 POSTS
I just went to an automotive electric shop and got everything fixed. Car has blue smoke, is this a bad sign?
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Saturday, October 8th, 2016 AT 7:51 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If it is out the tailpipe it can be valve seals or maybe rings, normally it is valve seals. They can be fixed on car so check pricing also check your PCV valve and for the hose being blocked that can cause it as well.
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Saturday, October 8th, 2016 AT 8:28 AM
Tiny
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  • MEMBER
  • 5 POSTS
Thank you so much man! I will try that and keep you updated. Thanks a million!
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Saturday, October 8th, 2016 AT 8:44 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
You forgot to tell us what the problem was they found?
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Saturday, October 8th, 2016 AT 3:46 PM
Tiny
ROB MAJOR
  • MEMBER
  • 5 POSTS
Valve seals and carb going bad it is leaking
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Tuesday, October 11th, 2016 AT 10:11 AM
Tiny
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  • MEMBER
  • 5 POSTS
Also head gaskets need replacing
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Tuesday, October 11th, 2016 AT 10:12 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Wow that's a lot of repairs thanks for the update.
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Tuesday, October 11th, 2016 AT 10:38 AM

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