1991 Cadillac DeVille Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Cadillac DeVille
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1991 Cadillac DeVille ProblemsSmog Check Failure Due to Excessive Carbon Buildup
Excessive carbon build up in the engine combustion chambers may be the cause of a smog check failure due to excess NOx emissions. A "top engine" decoarbonization cleaning procedure will commonly correct this concern.
The high-pressure power steering lines are known to leak.
Problems with the anti-theft systems using the raised-chip key can prevent the car from starting. The wires in the steering column to the ignition lock cylinder tend to break. The the key and ignition lock cylinder must be replaced to correct this condition.
1991 Cadillac DeVille QuestionsCan bad crank sensor make the car keep falling dead in route (1 answer)
Car keeps loosing power after cooling off it starts again only to repeat itself It does this when I am driving on the freeway
1991 Cadillac DeVille RecallsCadillac Recalls 1991-1993 Models Due to Transmission Cooler Line Leak
Cadillac has recalled 1991-1993 Cadillac DeVille and Fleetwood vehicles because the upper transaxle cooler line may leak. In the presence of an ignition source, a fuel leak in the engine compartment may result in a fire. Dealers will replace the upper transaxle cooler line.