1991 Jeep Wrangler Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Jeep Wrangler
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1991 Jeep Wrangler ProblemsThrottle Position Sensor May Fail
The throttle position sensor (TPS) may fail causing intermittent drivability problems like hard starting, stalling, and/or hesitation when accelerating. A failed TPS will require replacement, proper diagnoses should always be performed before replacing any parts.
Loose or worn suspension and steering components can cause a wobble or shaking in the steering wheel. It may happen at a certain speed and subside as the vehicle accelerates through the range. Tire balance can contribute to this as well.
A ticking type noise may be noted from the engine area due to an exhaust manifold that has cracked where the pipes are welded; cracked manifolds should be replaced.
1991 Jeep Wrangler QuestionsWorking on a 91 jeep 4l have no spark did roater and cap and still nothing (1 answer)
will start sometimes after a few trys has fuel but seams like no spark has code 33 i dont have a/c what does the auto stut downrelay afect and could that be the problum have changed the relay, coil, crank sensor
Jeep runs great changed out the electric fuel pump cap rotor plugs wires MAP sensor but does not idle