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A/C not blowing nor the odometer/speedometer not working and transmission not shifting correctly

Tiny
RON CHAPMAN
  • MEMBER
  • 1992 CADILLAC DEVILLE
When you start up, all dash light are off then when driven for a few it comes and goes but never stays lite. The a/c blows hot than cold than not at all, and the transmissions drags really bad. No overheating or smoke just some rough riding.
Monday, September 12th, 2011 AT 5:18 PM

4 Replies

Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Is the speedo a/c and the fueldata all out?
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Monday, September 12th, 2011 AT 5:53 PM
Tiny
RON CHAPMAN
  • MEMBER
  • 2 POSTS
The odometer and speed digital reading is out but if you go over a bump just right it comes back on temporary. The a/c just blows hot and the transmission down shifts while driving
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Tuesday, September 13th, 2011 AT 3:14 PM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Check the codes by pushing off and warmer buttons on the a/c panel. When all segments light release and write down the codes. If the rest off the head operates and only mph is blank no 0s or anything. The head is bad. You will have to have the a/c system checked for a leak.
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Tuesday, September 13th, 2011 AT 6:15 PM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
You read the codes on the fuel data panel.
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Tuesday, September 13th, 2011 AT 6:44 PM

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