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1988 Cadillac Deville Miss and backfire thru carb

Tiny
CHUCK57201
  • MEMBER
  • 1988 CADILLAC DEVILLE
  • 4.5L
  • V8
  • FWD
  • AUTOMATIC
  • 105,000 MILES
When the car is cold it runs perfect
After about five minutes it starts missing and backfires when I accelerate the warmer
It gets the worse it gets
Have had it to Tiresplus and a GM Dealer and spent to much money
Car still runs bad

Chuck
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Friday, July 10th, 2015 AT 2:29 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan f codes and have ignition module checked as well as pick up coil it may have the wires worn out to pickup coil to module and causing the problem
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Saturday, July 11th, 2015 AT 10:08 AM
Tiny
CHUCK57201
  • MEMBER
  • 2 POSTS
Had all wiring checked by GE Dealer and was ok
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Saturday, July 11th, 2015 AT 11:00 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
The pickup coil is in dist so it may be worn or to many ohms it h s to be physically checked not the wires outside dist. Or it may be a coil problem
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Saturday, July 11th, 2015 AT 11:05 AM

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