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Service bulletins for the 1998 Ford Explorer

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.

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

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
022212004-07-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE-GEAR DRIVEN SYNCHRONIZERS-INCORRECT INSTALLATION-CAMSHAFT POSITION SYNCHRONIZER (CMP) INSTALLATION TOOL CORRECT APPLICATION. *MJ
031992003-11-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. RATTLE/BUZZ SOUND FROM UNDER THE VEHICLE ON 4.0L SINGLE OVERHEAD CAM (SOHC) ENGINES. *TT
8701972003-03-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INCORRECTLY INSTALLED GEAR DRIVEN CAMSHAFT POSITION (CMP) SENSOR SYNCHRONIZER ASSEMBLIES CAUSING SURGE, LOST OF POWER, MALFUNCTION INDICATOR LAMP ON AND DIAGNOSTIC TROUBLE CODES P1336, P1309 AND P0340. *TT
012462002-04-18. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. ENGINE OIL SYSTEM PRIMING PROCEDURES, SERVICE TIPS FOR REPORTS OF PREMATURE ENGINE FAILURE. *TT
150402002-04-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES INCLUDING 1997 THROUGH 1999 EXPLORER SPORT TRAC EQUIPPED WITH A 4.0L SOHC ENGINE MAY EXHIBIT A START-UP NOISE FROM THE LEFT FRONT OF THE ENGINE. *TT
02142002-04-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME ENGINE ASSEMBLIES WITH ALUMINUM CYLINDER HEADS REPAIRED IN-VEHILE HAVE BEEN FOUND TO LEAK COOLANT AND/OR OIL FROM THE CYLINDER HEAD GASKET AREA. *TT
012052002-02-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES MAY EXHIBIT VACUUM OR AIR LEAKS IN THE INTAKE MANIFOLD AND / OR ENGINE SYSTEM CAUSING DIAGNOSTIC TROUBLE CODES P0171 AND OR P0174. *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
152262001-12-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES EQUIPPED WITH A 4.0L OHV ENGINE MAY EXHIBIT AN ENGINE NOISE THAT MAY BE PERCEIVED BY THE CUSTOMER A S ADIESEL TYPE NOISE AND IS KNOWN AS MARBLE NOISE. *TT
0701012001-10-30. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SUBJECT REGARDING OWNER NOTIFICATION PROGRAM 01M01 SUPPLEMENT #2: REVISED TECHNICAL INSTRUCTIONS AND NEW LABOR OPERATION. NLM
150062001-10-23. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES WITH 4.0L SOHC ENGINES MAY MAKE A START-UP NOISE FROM THE LEFT FRONT OF THE ENGINE. *TT
150402001-09-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME EXPLORER / SPORT / SPORT TRAC EQUIPPED WITH A 4.0L SOHC ENGINE MAY EXHIBIT A START-UP NOISE CONDITION FROM THE LEFT FRONT OF THE ENGINE. *TT
144892001-08-09. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES BUILT THROUGH 01/1999, EQUIPPED WITH A 5.0L ENGINE MAY EXHIBIT A COLD START OR HOT ENGINE DECELERATION NOISE COMING FROM THE #5 CYLINDER. *TT
01M012001-07-19. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SUBJECT REGARDING OWNER NOTIFICATION PROGRAM 01M01 REGARDING ADDITIONAL COVERAGE FOR FRONT CAM CHAIN GUIDE ASSEMBLY. *TT
01M012001-05-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SUBJECT REGARDING ADDITIONAL COVERAGE ON THE FRONT CAM CHAIN GUIDE ASSEMBLY FOR RENTAL VEHICLES WITH 4.0L SINGLE OVERHEAD CAM (SOHC) ENGINES. *TT
148682001-05-23. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES EQUIPPED WITH THE 4.0 SOHC ENGINE MAY EXHIBIT A PRIMARY CHAIN RATTLE NOISE (SOMETIMES DESCRIBED AS A SPARK KNOCK-TYPE NOISE). *TT
01M012001-05-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. OWNER NOTIFICATION PROGRAM REGARDING ADDITIONAL COVERAGE PROGRAM FOR FRONT CAM CHAIN GUIDE ASSEMBLY WHICH MAY WEAR OR BREAK AND CAUSE EXCESSIVE CAM CHAIN NOISE THAT DOES NOT GO AWAY AFTER FIVE MINUTES OF ENGINE OPERATION. *TT
01M012001-04-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SUBJECT REGARDING ADVANCE NOTICE ON UPCOMING OWNER NOTIFICATION PROGRAM WHICH WILL PROVIDE ADDITIONAL COVERAGE ON THE FRONT CAM CHAIN GUIDE ASSEMBLY ON CERTAIN VEHICLES. *TT
146172001-04-03. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. SUBJECT PERTAINING TO BROKEN THERMOSTAT. *JB
145832001-04-02. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. CONCERNS WITH BROKEN THERMOSTATS ON ENGINES. *JB
145602001-04-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. VEHICLES MAY EXPERIENCE START UP TIMING CHAIN NOISE. *JB
00M122001-03-13. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SUBJECT REGARDING OWNER NOTIFICATION SUPPLLEMENTAL PROGRAM FOR VEHICLES EQUIPPED WITH 4.0L SOHC ENGINES - CAMSHAFT CHAIN TENSIONER AND LOWER INTAKE MANIFOLD GASKET ADDITIONAL COVERAGE. *TT
144892001-03-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES BUILT THROUGH 01/1999 AND EQUIPPED WITH A 5.0L ENGINE MAY EXHIBIT A COLD START OR HOT ENGINE DECELERATION NOISE COMING FROM THE #5 CYLINDER. *TT
00M122001-03-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. FORD MOTOR COMPANY IS PROVIDING ADDITIONAL COVERAGE FOR THE 4.0L SOHC CAMSHAFT CHAIN TENSIONER AND LOWER INTAKE MANIFOLD GASKET. *TT
52722001-01-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. BRIEF INFORMATION REGARDING ENGINE STALL CONDITION. *TT

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