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1990 Cadillac Fleetwood Problems

Find the most common issues based on 1990 Cadillac Fleetwood owner complaints.
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Most Common 1990 Cadillac Fleetwood Problems

Problems with 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 key and ignition loc...
The engine control module (ECM) electrical grounds on the front of the engine block may have high resistance causing a rough running engine or stalling condition.
The fuel pump may fail causing the engine to stall and not restart. Our technicians recommend replacing the fuel filter every 30,000 miles to help prevent undue strain on the fuel pump.
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2 Known 1990 Cadillac Fleetwood Brakes Problems

The ABS accumulator may fail causing loss of power brake assist. (The brake pedal will become very hard).
The ABS master cylinder assembly may fail internally causing the ABS light to illuminate.

2 Known 1990 Cadillac Fleetwood Drive Train Problems

An automatic transmission fluid leak may develop from the rubber section of a transmission cooler line. In some cases the rubber section of hose can be replaced. In others, the complete cooler ...
You may be able to prevent transmission problems by servicing the transmission and inspecting the fluid every 30,000 miles. If the fluid is dark or burned then the transmission system should be com...

1 Known 1990 Cadillac Fleetwood Electrical & Lights Problem

A door window may move slowly or stop in mid travel due to a failing power window motor. The affected window may start working again after the motor cools off. Replacing the faulty window m...

6 Known 1990 Cadillac Fleetwood Engine Problems

The engine control module (ECM) electrical grounds on the front of the engine block may have high resistance causing a rough running engine or stalling condition.
The fuel pump may fail causing the engine to stall and not restart. Our technicians recommend replacing the fuel filter every 30,000 miles to help prevent undue strain on the fuel pump.
The spark plugs should be replaced every 30,000 miles and the spark plug boots should be checked for hot spots and cracks.

3 Known 1990 Cadillac Fleetwood Exhaust & Emissions Problems

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 co...
The EGR valve or control solenoid may fail causing the check engine (SES) light to illuminate.
The Engine Control Module (ECM) can fail causing stalling, and engine and transmission drivability concerns.

2 Known 1990 Cadillac Fleetwood Heating & Air Conditioning Problems

Our technicians highly recommend that the engine coolant be replaced every 30,000 miles.
The AC compressor may develop an abnormal noise or refrigerant leak, requiring replacement.

1 Known 1990 Cadillac Fleetwood Maintenance Problem

Brake fluid can become dirty and may cause problems in the brake system; it should be flushed every 60,000 miles.

1 Known 1990 Cadillac Fleetwood Miscellaneous Problem

Problems with 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 key and ignition loc...

4 Known 1990 Cadillac Fleetwood Suspension & Steering Problems

The steering gear may fail causing a loss of power steering fluid as a result the steering may become hard to turn.
The high pressure power steering hose will commonly leak fluid; it should be replaced.
The outer tie rod ends on the steering linkage may wear causing excessive free play in the steering and uneven tire wear. If the worn tie rod ends are replaced, the wheel alignment should be chec...

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Known 1990 Cadillac Fleetwood Problems & Complaints

The high pressure power steering hose will commonly leak fluid; it should be replaced.
The AC compressor may develop an abnormal noise or refrigerant leak, requiring replacement.
Our technicians highly recommend that the engine coolant be replaced every 30,000 miles.
The steering gear may fail causing a loss of power steering fluid as a result the steering may become hard to turn.
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 co...
The alternator may fail causing the battery to go dead or the engine to stall while driving.
The ABS master cylinder assembly may fail internally causing the ABS light to illuminate.
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