20 Most Recent 1992 Cadillac DeVille - Page 2 Questions & Answers

This problem is most often caused by the air mixing valve (usually its actuator has stopped working - fails in the cold position) so I would start there. Not sure about a 92 - could either be an electrically or vacuum controlled actuator. You can check vacuum at the HVAC control unit with a vacuum tester.

1992 Cadillac... | Answered on Jan 06, 2017

Code 30 means the idle speed control RPM is out of range.
The computer can not keep the idle speed in the correct range.
Could be the control servo, a wiring problem, or something like a vac leak.

1992 Cadillac... | Answered on Dec 20, 2015

It might be in 3rd gear could be in limp in mode if computer detected a problem, hook up a scanner and have it checked for codes

1992 Cadillac... | Answered on Oct 28, 2015

take the alternator to an accredited auto electrician for a bench test
they are fairly robust but if it has an internal regulator , some circuit may have cracked or the brushes may be damaged or a terminal insulation could be dislodged.

1992 Cadillac... | Answered on Sep 12, 2015

you replaced something that is not connected to the traction control. Run the fault codes and fix the faulty sensor.

1992 Cadillac... | Answered on Sep 03, 2015

I think it is the glove box if not check under the driver side dash

1992 Cadillac... | Answered on Jul 24, 2015

The engine is burning oil if oil deposits are on the firing end of the spark plug. Possible worn valve seals/guides or worn oil control/piston rings

1992 Cadillac... | Answered on Jul 20, 2015

Hi Rick:
Odds are pretty good that the switch has died and will need to be replaced.

1992 Cadillac... | Answered on Jun 20, 2015

This is rather a generic answer for most vehicles. First disconnect the negative battery lead, then the positive. Then check the bell housing to tunnel distance and make sure you have some space to lift the engine. Locate the motor mounts you want to remove and replace. You will need to lift the engine, if both mounts are broken you can lift the engine prior to unbolting the mounts, if not, undo the bolt and lift the engine a little and remove the bolt then proceed to remove the other bolts. Jacking up the engine can be problematic. You may have to make a wood block to put between block and engine. Do not put the jack on the oil pan if you bend the pan you can create huge problems! For more specific instructions pertaining to your specific vehicle, obtain a Chilton's manual or Haymes repair manual for your specific vehicle. If you have an engine hoist you can lift the engine with it by hooking on to the factory lifting shackle.

1992 Cadillac... | Answered on Jun 07, 2015

You should not be able to set it - replace it if faulty.

1992 Cadillac... | Answered on May 24, 2015

For 1992 Cadillac DeVille 4.9 liter V-8 VIN "B" check this ...


Hope helps (remember rated this).

1992 Cadillac... | Answered on May 13, 2015

4 cylinder is 1342 and 6 cylinder is 135624

1992 Cadillac... | Answered on May 11, 2015

I've seen this problem before. If the fuel pump assembly was bumped in the replacing procedure it's very possible that the fuel gauge sending unit was damaged. Those things are extremely sensitive unlike most GM cars and trucks. Cadillacs are very touchy vehicles to work on unfortunately.

1992 Cadillac... | Answered on Apr 09, 2015

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