1990 Jeep Wrangler Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1990 Jeep Wrangler

1990 Jeep Wrangler Problems

Throttle Position Sensor May Fail

The throttle position sensor (TPS) may fail causing intermittent drivability problems like hard starting, stalling, and/or hesitation when accelerating. A failed TPS will require replacement, proper diagnoses should always be performed before replacing any parts.

Engine Oil Leaks From Valve Cover, Oil Pan, and Timing Cover Gaskets

Engine oil leaks from the valve cover gasket, oil pan gasket and timing cover gasket are common.

Brake pulsations due to warped front brake rotors

Due to warped front brake rotors or variations in the thickness of the rotors, brake pulsations may develop. The best method to reduce pulsations is to use an "On the Car" brake lathe (as long as the rotors are suitable for turning). "On the Car" equipment can correct variations (or "runout") in the rotor surfaces because it also corrects variations in other components (e.g. the hub).

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1990 Jeep Wrangler Questions

I have a popping noise in the front end when I turn (1 answer)

ive got a 66 cj-5 that no matter what ive done still get water in the oil (1 answer)

I had a machine shop check and shave the heads , I also replaced the intake manifold gasket and head gaskets and still get water in the oil. this jeep has the AMC 304 motor in it . any ideas?

my 1979 CJ-7's 304 is worn out. What engine would be a good replacement? (2 answers)

Is it best to rebuild or replace? (The "tell us your car" info is incorrect)

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1990 Jeep Wrangler Recalls

Recall 04E041000
BESTOP AFTERMARKET REAR SHELL ROOF RACKS,MANUFACTURED BETWEEN APRIL 27 AND MAY 20, 2004, DESIGNED FOR USE WITH THE BESTOP HARDTOP MADE FOR THE 1986-1995 AND 1997-2003 JEEP WRANGLER. THE COCKPIT COVER MAY NOT STAY LATCHED TO THE ROOF RACK BECAUSE THE LATCH BRACKET MISPOSITIONS THE ROTARY LATCH T...
Recall 02V041000
ON CERTAIN SPORT UTILITY VEHICLES EQUIPPED WITH MANUAL TRANSMISSIONS, THE PARKING BRAKE CAN SELF-RELEASE WITHOUT WARNING.
Recall 98V005000
VEHICLE DESCRIPTION: PASSENGER AND MULTI-PURPOSE VEHICLES ORIGINALLY SOLD OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, ILLINOIS, INDIANA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, OR WISCONSIN, AND THE DIS...

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