1991 Cadillac Eldorado Service Engine Soon

1991 CADILLAC ELDORADO
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JERZEEJO
  • MEMBER
  • 2 POSTS
:?: The "Service Engine Soon" light comes on and the speedometer goes to "0" and the fuel (gallons) blinks. Also get message "SYSTEM PROBLEM". This has happened twice in the last month. During this time, the car also blows cold air and I cannot use the heat, etc. If I pull over and stop the car and restart it, everything works fine again.

Can anyone tell me what is going on? Please humor this 54 yr old woman with an answer so my husband can figure out what is wrong. I ask the questions and he fixes the car. Thanks, Joanne
Jan 16, 2007 at 12:10 AM
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MATHIASO
  • ✓Experienced Mechanic
  • 1,209 POSTS
You can take your car to AutoZone, they can scan your car for free( hope they still doing that :) )
Ask them to write the code down for you and come back with the code. My colleagues or I can help.
Jan 16, 2007 at 3:39 AM
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SERVICE WRITER
  • ✓Experienced Mechanic
  • 9,123 POSTS
This car can give you the codes, I sent the procedure to your email.
Jan 16, 2007 at 11:05 AM
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MATHIASO
  • ✓Experienced Mechanic
  • 1,209 POSTS
ok paul I got it. :wink:
Jan 16, 2007 at 3:55 PM
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JERZEEJO
  • MEMBER
  • 2 POSTS
We gave it freon yesterday. Seems to be fine now. How do we clear the code from the panel?

Any help would be greatly appreciated.
Jan 22, 2007 at 7:31 AM
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SERVICE WRITER
  • ✓Experienced Mechanic
  • 9,123 POSTS
Disconnecting the Battery for five minutes should clear them.
Jan 22, 2007 at 10:53 AM

Suggested Repair

Have the car scanned for diagnostic codes, using a free parts-store scan or the vehicle's onboard code procedure. To clear stored codes from the panel, disconnect the battery for about five minutes. The climate complaint was reported improved after refrigerant was added, but the intermittent Service Engine Soon and cluster faults should still be diagnosed if they return.

Conversation Summary

A 1991 Cadillac Eldorado intermittently shows Service Engine Soon, a system problem message, a speedometer reading of zero, and a blinking fuel display, along with loss of heat. Restarting temporarily restores normal operation. Experts advised retrieving diagnostic codes and said disconnecting the battery for five minutes should clear them. The owner later reported the climate system seemed fine after adding refrigerant and asked how to clear the panel code.

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