1989 Jeep Comanche TSBs
11 Technical Service Bulletins across 6 categories
Engine
4 bulletinsCONCERNS WITH ENGINE COOLANT USAGE.
Read full bulletin
*NLM
VARIOUS CAR OWNER'S HAVE EXPRESSED INTEREST IN USING ENGINE COOLANTS MADE WITH PROPYLENE GLYCOL INSTEAD OF ETHYLENE GLYCOL.
Read full bulletin
*YC
IT HAS BEEN DETERMINED THAT CERTAIN EMISSION RELATED COMPONENTS OF THE 1989 JEEP EQUIPPED WITH THE 2.5L ENGINE, MAY BE SUSCEPTIBLE TO FAILURE.
Read full bulletin
FAILURE OF THESE COMPONENTS MAY CAUSE THE VEHICLE TO BE IN VIOLATION OF CALIFORNIA EMISSIONS STANDARDS. HYDROCARBONS, CARBON MONOXIDE AND OXIDES OF NITROGEN COULD BE ABOVE THE ALLOWABLE LIMITS, WHICH WERE ESTABLISHED TO PROTECT PUBLIC HEALTH FROM THE DANGERS OF AIR POLLUTION. TO CORRECT THIS PROBLEM, DEALERS WILL REPLACE THE OXYGEN SENSOR, CRANKCASE VENTILATION HOSE AND IF EQUIPPED, THE TRANSFER CASE VACUUM HOSE AND FUEL TANK VENT BOOT. IN ADDITION, THE THE EXHAUST MANIFOLD WILL BE CHECKED FOR AN EXHAUST LEAK NOISE AND REPLACED AS RQUIRED. *TW
IT HAS BEEN DETERMINED THAT THE OXYGEN SENSOR ON CERTAIN 1989 JEEP CHEROKEE, COMANCHE AND WRANGLER MODELS EQUIPPED WITH...
Read full bulletin
A 2.5L ENGINE MAY BE SUSCEPTIBLE TO FAILURE. FAILURE OF THE OXYGEN SENSOR MAY CAUSE YOUR VEHICLE TO BE IN VIOLATION OF FEDERAL EMISSIONS STANDARDS. TO CORRECT THIS PROBLEM, DEALERS WILL REPLACE THE OXYGEN SENSOR. *TW
Other
3 bulletinsSUBJECT REGARDING WIRE SPLICE REPAIRS.
Read full bulletin
*SB
THIS BULLETIN PROVIDES A REVISED WIRE SPLICE PROCEDURE AND RELATED PARTS.
Read full bulletin
*TT
UNKNOWN
Transmission
1 bulletinAUTOMATIC TRANSMISSION FLUID USAGE ATF+4.
Read full bulletin
*TT *MJ
Infotainment
1 bulletinINFORMATION ON INSTALLATION OF RADIO TRANSMITTING EQUIPMENT.
Read full bulletin
*AK
Body & Paint
1 bulletinDIFFICULT TO CLEAN LIGHT COLORED "CHALKY" RESIDUE FROM PLASTIC BODY COMPONENTS THAT ARE MOLDED IN BLACK.
Read full bulletin
*TW
Pre-Delivery & Maintenance
1 bulletinSUPPLEMENTAL INFORMATION TO MANUFACTURER'S RECALL #556.
Read full bulletin
*TW