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Service bulletin 4638

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id615176
Published by NHTSA2001-01-03
Manufacturer's number4638
Manufacturer's date1998-08-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:GASOLINE

NHTSA's summary

MALFUNCTION INDICATOR LAMP ON, WITH P0300 - P0308 MISFIRE DIAGNOSTIC TROUBLE CODES WITH A 4.6L ENGINE. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine

Trouble codes named

P0300, P0308

Vehicles listed
FORD E-1501997, 1998
FORD E-2501997, 1998
FORD EXPEDITION1997, 1998
FORD F-1501997, 1998
FORD F-2501997, 1998
LINCOLN NAVIGATOR1997
LINCOLN NAVIGATOR1998

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
07V5530002007-12-05. ENGINE AND ENGINE COOLING:ENGINE:DIESEL
19970101997-01-21. Engine

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
072122008-02-21. Service bulletin. SOME 1997-2008 VEHICLES EQUIPPED WITH A 4.6L 2V, 5.4L 2V, OR 6.8L 2V ENGINE--SPARK PLUG THREAD REPAIR PROCEDURE--NOT COVERED UNDER NEW VEHICLE LIMITED WARRANTY. *NJ THIS INCLUDES F-53 MOTORHOME CHASSIS. UPDATED 2/23/10. *PE
0416012006-01-13. Service bulletin. WDS COP KIT DIAGNOSTIC TIP - COIL ON PLUG (COP) IGNITION SYSTEMS - ENGINE MISFIRE OR ROUGH RUNNING. *TT
05542005-05-05. Service bulletin. USE OF STAINLESS STEEL EXHAUST STUDS IN SERVICE FOR 5.4L 2V ENGINE. *TT
054172005-05-05. Service bulletin. INTERMITTENT ROUGH IDLE - NON-COMMANDED EGR (EXHAUST GAS RECIRCULATION VALVE) FLOW. *TT
0314042005-01-06. Service bulletin. ENGINE MISFIRE OR RUNNING - COIL ON PLUG (COP) IGNITION SYSTEMS - WDS COP KIT DIAGNOSTIC TIPS. TO INCLUDE VARIOUS 2005 MODELS. * AR THIS ARTICLE 04161 SUPERSEDES TSB 03-14-04.
164162004-07-28. Service bulletin. NO/HARD START IN COLD AMBIENTS / NEW TWO-PIECE BLOCK HEATER CORD RELEASED. *MJ
022272004-07-27. Service bulletin. ENGINE-CYLINDER HEAD DECK LEAK-4.6 AND 5.4L ENGINES-NEW SERVICE-ONLY GASKET AND CYLINDER HEAD KITS AVAILABILITY. *MJ
022212004-07-27. Service bulletin. ENGINE-GEAR DRIVEN SYNCHRONIZERS-INCORRECT INSTALLATION-CAMSHAFT POSITION SYNCHRONIZER (CMP) INSTALLATION TOOL CORRECT APPLICATION. *MJ
174482004-07-27. Service bulletin. REMOTE OIL FILTER ADAPTOR REPLACEMENT - NEW SERVICE PART. *TT
173202004-07-23. Service bulletin. BROKEN EXHAUST MANIFOLD STUDS. *TT