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Service bulletin BC3485972301

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 id51482
Published by NHTSA1997-06-27
Manufacturer's numberBC3485972301
Manufacturer's date1997-01-23
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS

NHTSA's summary

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

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, Cooling system

Vehicles listed
FORD AEROSTAR1991, 1992, 1993, 1994, 1995, 1996, 1997
FORD EXPLORER1991, 1992, 1993, 1994, 1995, 1996, 1997
FORD RANGER1991, 1992, 1993, 1994, 1995, 1996, 1997

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

Other bulletins for the same vehicles and component
146172001-04-03. Service bulletin. SUBJECT PERTAINING TO BROKEN THERMOSTAT. *JB
145832001-04-02. Service bulletin. CONCERNS WITH BROKEN THERMOSTATS ON ENGINES. *JB
992382000-03-09. Service bulletin. A TEMPERATURE GAUGE FLUCTUATION AND / OR A KNOCKING / THUMPING NOISE MAY BE AUDIBLE INTHE PASSENGER COMPARTMENT ON SOME VEHICLES. *TT
970902971891998-03-30. Service bulletin. EXPERIENCING A "THUMPING" NOISE OR TEMPEATURE GAUGE FLUCTATION WITH SOME VEHICLES. *YC
BC10355970201997-07-17. Service bulletin. RADIATORS MAY EXHIBIT A COOLANT LEAK AT THE END TANK SEALS IN COLD TEMPERATURES. *JD
BC10199972301997-06-27. Service bulletin. 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
BC08809610041997-04-24. Service bulletin. LACK OF COOLING DUE TO COMPLETE LOSS OF CHARGE. MAY HAVE A MACHINING DEFECT IN THE HIGH PRESSURE RELIEF VALVE. *TT
BC01039601021996-04-25. Service bulletin. RANGERS W/ 2.3L, FOR ALL ISSUES RELATING TO WATER PUMP LEAKAGE DURING WARRANTY PERIOD, CALL JIM SHOPP ON PAGER 1-800-961-6829 PRIOR TO REPAIR. WILL ADVISE WHETHER PROBLEM RELATES TO PUMP OR THE INLET LINE.
951531996-04-25. Service bulletin. TEMPERATURE GAUGE - FLUCTUATING AND /OR INACCURATE HIGH READINGS. *SD
951281995-11-01. Service bulletin. COOLING SYSTEM-PULSATING COOLANT FLOW-NOISE-KNOCK/THUMP - AUDIBLE IN PASSENGER COMPARTMENT. *TW