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Resources for the Repair and Maintenance of your Jeep Comanche

Jeep Comanche Models:

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Jeep Comanche Problems

Engine -- Verified

The head gasket may seep oil externally. An updated head gasket is available that should correct this concern.

Exhaust & Emissions -- Verified

The outer exhaust manifold studs can break and cause exhaust leaks, commonly noted as a ticking type noise. The outer studs, clamps, and nuts will need to be replaced and are now being tightened to a reduced torque value (20 Nm/180 in lbs).

Engine -- Verified

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

Engine -- Verified

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Ignition wire failures can cause a rough idle or intermittent engine misfire and there might not be a Check Engine light.

Engine -- Verified

Some models are susceptible to rear main oil seal failures in dirty or dusty conditions. As dirt and dust collect on the oil seal, the abrasion wears through the sealing surface. A rubber plug, installed above the starter, is being used in production that prevents the dust entry near the seal and extends the life of the seal. The plug is available from MOPAR and should be installed any time a rear main seal service is performed.

Jeep Comanche Recalls (Recent)

Brakes, March 9, 1998

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.

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Drive Train, March 14, 1991

Summary: MALFUNCTION OF FUEL INJECTION SYSTEM THROTTLE POSTITION SENSOR COULD CAUSE INTERMITTENT HIGH ENGINE IDLE SPEED IMMEDIATELY AFTER STARTING ENGINE.

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Jeep Comanche Questions and Answers

Visitor, 1990 Jeep Comanche, 4.0L 6 Cylinder, Boaz, AL

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....

tgboots, 1990 Jeep Comanche, Harlem, GA

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 ...

Foster1, 1990 Jeep Comanche, 4.0L 6 Cylinder, Crestview, FL

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.

Visitor, 1990 Jeep Comanche, 2.5L 4 Cylinder, Lakeside, CA

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...

retiredmike, 1990 Jeep Comanche, 4.0L 6 Cylinder, Lake Stevens, WA

Rolled window down on my 89 comanche and would not roll back up, just get a clicking noise. Took door panel off but can't see how to get to the problem...behind sheet metal.Need advise,Mike

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Jeep Comanche Reviews

Overall it runs great and no real problems at all. Good on the road or going through the mud.

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