1991 Ford F-150 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Ford F-150
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1991 Ford F-150 ProblemsExhaust Manifolds Can Crack and Cause Leak
A ticking noise may develop from the engine due to a warped exhaust manifold. Damaged exhaust manifolds will require replacement to correct this issue.
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.
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.
1991 Ford F-150 QuestionsAfter replacing all ignition parts, truck still has no spark. What would be the next step? Will the crank sensor cause no spark? (1 answer)
!991 5.0 f-150 2wd.Truck will start but only run for a minute or so,when I try to start again I can't hear fuel pump pressureise line.After 10 mins.or so turn the key hear fuel pump and it will start then die.It has dual tanks,also rear tank will overflow front tank,Ive replaced fuel filter,p...
1991 Ford F-150 RecallsFord Extends Warranty Coverage for 1990-1993 F150-F350 Trucks Fuel Pump/Sender Assembly
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.
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.