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Service bulletins for the 1991 Ford Ranger

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.

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

By type

By component

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
021422002-11-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES EQUIPPED WITH AN AUTOMATIC TRANSMISSION AND A 4.0L OHV ENGINE MAY EXHIBIT A NOISE / VIBRATION, NO DRIVE, UNUSUAL NOISE DURING CRANKING OR A NO CRANK CONDITION. *TT
011972002-02-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES EQUIPPED WITH THE 4.0L OHV ENGINE MAY EXHIBIT AN ENGINE NOISE WHICH MAY BE PERCEIVED BY THE CUSTOMER AS A PISTON / ONNECTING ROD BEARING KNOCK. *TT
011242001-10-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ON SOME VEHICLES, ENGINE OIL MAY CONTINUE TO LEAK FROM THE ENGINE OIL PAN GASKET AREA AFTER AN ENGINE OIL PAN GASKET REPAIR HAS BEEN PERFORMED. *TT
131182000-11-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES MAY EXHIBIT AN ENGINE NOISE WHICH MAY BE PERCEIVED BY THE CUSTOMER AS A PISTON / CONNECTING ROD BEARING KNOCK. *TT
68962000-11-09. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES MAY EXHIBIT AN ENGINE NOISE WHICH MAY BE PERCEIVED BY THE CUSTOMER AS A PISTON / CONNECTING ROD BEARING KNOCK. *TT
991832000-03-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SERVICE TIP INFORMATION ON REVISED OIL PAN GASKET REPLACEMENT PROCEDURE. *TT
998161999-08-19. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. FORD MOTOR COMPANY NOW RECOMMENDS SAE 5W-30 VISCOSITY GRADE FOR SERVICING ANY FORD GASOLINE-POWERED VEHICLE REGARDLESS OF MODEL YEAR. *TT
9823101999-03-03. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. MASS AIR FLOW (MAF)- SENSOR CONTAMINATION- SERVICE TIP. *AK
98641998-07-21. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. INFORMATION ON A BUZZING OR RATTLE NOISE FROM THE EXHAUST SYSTEM. *TT
BC10199972301997-06-27. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. 4.0L EQUIPPED VEHICLES MAY EXPERIENCE TEMPERATURE GAUGE FLUCTUATION THAT MAY BE ACCOMPNIED WITH A THUMPING NOISE OR FEEL IN THE COOLANT HOSES WITH THE ENGINE AT NORMAL OPERATING TEMPERATURE. *JD
BC34859723011997-06-27. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. 4.0L EQUIPPED VEHICLES MAY EXPERIENCE TEMPERATURE GAUGE FLUCTUATION THAT MAY BE ACCOMPANIED WITH A THUMPING NOISE OR FEEL IN THE COOLANT HOSE WITH THE ENGINE AT NORMAL OPERATING TEMPERATURE. *JD
951531996-04-25. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. TEMPERATURE GAUGE - FLUCTUATING AND /OR INACCURATE HIGH READINGS. *SD
SFA/94L041995-11-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; VEHICLE SPEED CONTROL; STEERING: STEERING WHEEL/HANDLE BAR; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. UNKNOWN
951281995-11-01. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. COOLING SYSTEM-PULSATING COOLANT FLOW-NOISE-KNOCK/THUMP - AUDIBLE IN PASSENGER COMPARTMENT. *TW
95871995-11-01. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. A KNOCKING/THUMPING NOISE MAY BE AUDIBLE IN THE PASSENGER COMPARTMENT ON SOME VEHICLES DUE TO STEAM FORMATION IN THE COOLING SYSTEM. *TW

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