WenmarOpen by Wenmar Pro

Service bulletins for the 1990 Jeep Wrangler

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

12 on file from NHTSA, as of 2026-10-19.

By type

By component

Bulletins, newest first
D-20-02 Rev. A2020-05-26. Service bulletin. EQUIPMENT. DIPAP Requirements - Addition of Jeep Wrangler (JL/JK) and Jeep Gladiator (JT) Hard Top and Targa Top Panel Replacements - All Dealers (Rev. A)
0800600REV2001-04-03. Service bulletin. ELECTRICAL SYSTEM. SUBJECT REGARDING WIRE SPLICE REPAIRS. *SB
0806002000-04-12. Service bulletin. ELECTRICAL SYSTEM:WIRING. THIS BULLETIN PROVIDES A REVISED WIRE SPLICE PROCEDURE AND RELATED PARTS. *TT
0703972000-01-07. Service bulletin. ENGINE AND ENGINE COOLING. CONCERNS WITH ENGINE COOLANT USAGE. *NLM
0816981999-11-12. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. INFORMATION ON INSTALLATION OF RADIO TRANSMITTING EQUIPMENT. *AK
0703971997-11-13. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. VARIOUS CAR OWNER'S HAVE EXPRESSED INTEREST IN USING ENGINE COOLANTS MADE WITH PROPYLENE GLYCOL INSTEAD OF ETHYLENE GLYCOL. *YC
2303971997-07-17. Service bulletin. STRUCTURE:FRAME AND MEMBERS. DIFFICULT TO CLEAN LIGHT COLORED "CHALKY" RESIDUE FROM PLASTIC BODY COMPONENTS THAT ARE MOLDED IN BLACK. *TW
RCL6471996-04-25. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). APPLIES TO VEHICLES EQUIPPED WITH A 4.2L ENGINE AND FEDERAL HIGH ALTITUDE EMISSION CONTROL SYSTEM. FUEL VAPORS MAY CAUSE DETERIORATION OF THE PCV HARNESS ASSEMBLY. THE PCV HARNESS ASSEMBLY MUST BE REPLACED AND THE ENGINE IDLE SPEEDS MUST BE RESET.
RCL/6171995-11-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. UNKNOWN
RCL/5581995-11-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. RECALL 558 - FAILURE OF THE OXYGEN SENSOR AND CATALYTIC CONVERTER MAY CAUSE A VEHICLE TO BE IN VIOLATION OF CALIFORNIA EMISSIONS STANDARDS. TO CORRECT THIS CONDITION, THE OXYGEN SENSOR AND CATALYTIC CONVERTER MUST BE REPLACED WITH IMPROVED DESIGN PARTS. *TW
RCL/5571995-03-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. IT HAS BEEN DETERMINED THAT THE 1990 JEEP VEHICLE, EQUIPPED WITH THE 2.5L ENGINE, MAY BE IN VIOLATION OF FEDERAL EMISSIONS STANDARDS. HYDROCARBON, CARBON MONOXIDE AND OXIDES OF NITROGEN LEVELS COULD BE ABOVE ALLOWABLE LIMITS, WHICH WERE ESTABLISHED TO PROTECT THE PUBLIC HEALTH FROM THE DANGERS OF AIR POLLUTION. TO CORRECT THIS PROBLEM, DEALERS WILL REPLACE THE OXYGEN SENSOR. *TW
RCL/5891995-02-10. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. HYDROCARBON AND CARBON MONOXIDE EMISSIONS LEVLS FOR THE ABOVE LISTED MODEL VEHICLES MAY EXCEED THE LIMITS ALLOWED BY CALIFORNIA EMISSIONS STANDARDS. TO CORRECT THE CONDITION, THE PCV HARNESS, CHOKE VACUUM DIAPHRAGM, EGR VALVE AND DECEL VALVE, IF EQUIPPED, MUST BE REPLACED. *TW

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.