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1990 Cadillac Deville Cadillac Deville skipping

Tiny
SNOOPY123A
  • MEMBER
  • 1990 CADILLAC DEVILLE
  • 4.5L
  • V8
  • FWD
  • AUTOMATIC
  • 103,000 MILES
I had 2 front tires changed and the store disconnected the battery. When I started it up the idle was extremely high. I reset the computer per the manual. Now the engine is running off of 6 or 7 cylinders. What can I do.
Friday, November 29th, 2013 AT 7:19 AM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
You need to determine which cylinders are missing and why and that may not be real simple as it's a very primitive computer system. A tech will have to use manual techniques to try to isolate the cylinder and then examine the plugs and wires to try to find the reason. It had nothing to do with disconnecting the battery.
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Friday, November 29th, 2013 AT 7:57 AM

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