The head gasket may seep oil externally. An updated head gasket is available that should correct this concern.
Resources for the Repair and Maintenance of your 1990 Jeep Comanche
1990 Jeep Comanche
1990 Jeep Comanche Problems
Child seat tether anchors are available from Chrysler and can improve the performance of child restraints. Each tether kit has all the necessary parts and detailed instructions according to our technicians.
Exhaust manifolds commonly crack where the pipes are welded; the manifolds should be replaced.
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.
The throttle body may accumulate an oily, black residue in the bore and on the throttle plate causing hard starting or possibly stalling when coming to a stop. The throttle body should be cleaned during regular maintenance but do not spray cleaners directly on or at the throttle position sensor (TPS) as this can damage the sensor.
1990 Jeep Comanche Recalls (Recent)
Summary: 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 DISTRICT OF COLUMBIA. THE FRONT DISC BRAKE ROTORS CAN EXPERIENCE SEVERE CORROSION IF OPERATED FOR AN EXTENSIVE PERIOD IN THE "SALT BELT." IF THE ROTORS ARE NOT REPLACED, THE CORROSION CAN EVENTUALLY COMPROMISE THE STRUCTURAL INTEGRITY OF THE STAMPED STEEL CENTER HUB SECTION OF THE ROTOR.Learn more »
1990 Jeep Comanche Questions and Answers
I have a 1988 Jeep Comanche that keeps blowing out slave cylinders. Just replace the slave and master cylinder. Seemed to fix it until I drove it for a day and it blew the slave cylinder out again....
What would be some of the causes for water in the oil? Motor was recently rebuilt but sat up for 2 1/2 years before being started. Would over torqueing the head bolts effect the seal of the head ...
I have a 1989 Jeep Comanche-I need to know how to calibrate/adjust TPS.4.0 liter motor.
I didn't have a selection for 1989 so I put 1990 above.
i have a 1990 jeep comanche and am having problems with the clutch slave and/or master cylinder the symptoms seem to be that the clutch lines won't seem to keep pressure in them and fluid leak...