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Resources for the Repair and Maintenance of your 1991 Ford F-150

1991 Ford F-150

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1991 Ford F-150 Problems

Engine -- Verified

There is a technical service bulletin for the V8 engines regarding a possible problem with the spark plug being ejected from the cylinder head, damaging the threads in the spark plug hole. If the vehicle is under warranty, cylinder head replacement is recommended. If the vehicle is out of warranty, Ford authorized the use of a specific thread insert to repair the head.

Engine -- Verified

The engine oil pan gasket can develop a leak. Leaking oil may accumulate on the exhaust system resulting in a burning smell. Replacing the gasket should correct this leak.

Engine -- Verified

The gears for the timing chain can strip, causing the engine to crank but not start.

Electrical & Lights -- Verified

The battery light may illuminate on the instrument panel because the alternator wire harness connector is damaged. A new connector kit is available and should be installed to correct this concern.

Brakes -- Verified

The front brakes may stick, bind, or grab. This can happen when the front brake caliper pins become corroded. Cleaning or replacing the caliper pins will be necessary to correct this problem.

1991 Ford F-150 Recalls (Recent)

Drive Train, August 26, 2000

RepairPal Expert Overview:

Ford has recalled Firestone Wilderness AT and Radial ATX tires installed on multiple lines of Ford trucks from 1991 to 2000. On some tires, under extreme conditions, the tread could separate, which can cause immediate tire failure. This may lead to a loss of vehicle control, injury, and death. Dealers replaced the affected tires.

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Drive Train, June 4, 2001

Summary: THIS IS NOT A SAFETY RECALL IN ACCORDANCE WITH THE SAFETY ACT. HOWEVER, IT IS DEEMED A SAFETY IMPROVEMENT CAMPAIGN BY THE AGENCY. EQUIPMENT DESCRIPTION: FORD IS REPLACING ALL FIRESTONE WILDERNESS AT 15, 16, AND 17 INCH TIRES MOUNTED ON FORD TRUCKS AND SUVS. FORD REPORTS TREAD SEPARATION CAN OCCUR DUE TO A COMBINATION OF THE SENSITIVITY OF THE TIRE DESIGN TO STRESS, AGING, AND MANUFACTURING DIFFERENCES BETWEEN PLANTS. FORD IS REPLACING THESE TIRES TO PREVENT POSSIBLE PREMATURE TIRE FAILURE. VEHICLE DESCRIPTION: THE VEHICLES LISTED BELOW MAY HAVE BEEN ORIGINALLY EQUIPPED WITH FIRESTONE WILDERNESS AT TIRES OR MAY HAVE HAD WILDERNESS AT TIRES INSTALLED DURING THE FIRESTONE RECALL LAUNCHED IN AUGUST 2000. CERTAIN 1991 THROUGHT 2002 FORD EXPLORER CERTAIN 2001 THROUGHT 2002 EXPLORER SPORT, AND SPORT TRAC CERTAIN 1997 THROUGH 2002 MERCURY MOUNTAINEER CERTAIN 1991 THROUGH 2001 RANGER CERTAIN 1999 THROUGH 2001 EXPEDITION CERTAIN 1991 THROUGH 1994, AND 1997 MODEL YEAR F-SERIES CERTAIN 1991 THROUGH 1994 BRONCO NOTE: BOTH ORIGINAL EQUIPMENT AND REPLACEMENT TIRES ARE AFFECTED.

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Electrical & Lights, June 7, 1996

Summary: THE IGNITION SWITCH COULD EXPERIENCE AN INTERNAL SHORT CIRCUIT.

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Engine, July 9, 2001

RepairPal Expert Overview:

Ford has extended the warranty coverage of the fuel pump and sending unit assembly in 1990-1993 F150, F250, and F350 trucks. In some trucks, the check valve may become damaged inside the fuel pump unit. This can cause fuel to travel from one tank to the other, creating an overflow condition. In the presence of an ignition source, a fuel leak may result in a fire. Dealers will repair the fuel pump and sending unit for up to 12 years or 150,000 miles from the original warranty start date.

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Engine, October 28, 1993

RepairPal Expert Overview:

Ford has recalled 1990-1993 F150, F250, and F350 trucks due to a faulty fuel pressure regulator and malfunctioning fuel pump check valves. Fuel may transfer from one tank to the second tank, causing a possible overflow condition and fire hazard. Dealers will replace the fuel pressure regulator and install redundant check valves.

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1991 Ford F-150 Questions and Answers

ted_2009, 1991 Ford F-150, V8, Hastings, MN

When at idle, and the heater -a/c control is in the defrost position, the engine speed will increase from 500 to 700 rpm, then back to 500. If I move the heater - a/c control to the floor or off po...

dawg, 1991 Ford F-150, 6 Cylinder, Columbus, MI

whats the procedure to replace a heater core

ford f-150 5.0L V8, 1991 Ford F-150, 5.0L V8, Neodesha, KS

Can some one tell me how to get off in a ford F-150 5.0L V8 year 1991? I've tried unscrewing it left like a normal cap but it wont pull off, it just stay's stuck. I need the truck tomo...

nigel_1, 1991 Ford F-150, 5.0L V8, Weaver, AL

I have a 91 f 150and it cranks and idle great, but at times while i'm driving it backfires and seems as if its out of gas, but when i click the fuel auxiliary switch from front to rear and buc...

Jack f150, 1991 Ford F-150, 5.0L V8, Sacramento, CA

The throttle sticks at about 1100rmps at idle. If I tap the top of the throttle body it drops down to 750 to 800 rpms. I have changed out the TPS and the Idle control valve. How can I be sure that ...

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1991 Ford F-150 Reviews

Love the truck I got 450k on mine but the brakes sucks

the only problem i have with mine is the transfer case

Amazing in the snow :D

Looks good

last forever

easy to maintain

great truck i got 167k on mine still runnin stong... minor oil leak. the gas mileage sucks and hurts the wallet to fill up but after all the abuse my truck takes it never lets me down

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