1991 Jeep Wrangler Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1991 Jeep Wrangler

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.

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.

Engine oil leaks from the valve cover gasket, oil pan gasket and timing cover gasket are common.

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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

this started after someone try to tune it up and it has drop gas mileage

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BESTOP AFTERMARKET REAR SHELL ROOF RACKS,MANUFACTURED BETWEEN APRIL 27 AND MAY 20, 2004, DESIGNED FOR USE WITH THE BESTOP HARDTOP MADE FOR THE 1986-1995 AND 1997-2003 JEEP WRANGLER. THE COCKPIT COVER MAY NOT STAY LATCHED TO THE ROOF RACK BECAUSE THE LATCH BRACKET MISPOSITIONS THE ROTARY LATCH T...ON CERTAIN SPORT UTILITY VEHICLES EQUIPPED WITH MANUAL TRANSMISSIONS, THE PARKING BRAKE CAN SELF-RELEASE WITHOUT WARNING.VEHICLE DESCRIPTION: PASSENGER AND MULTI-PURPOSE VEHICLES ORIGINALLY SOLD OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, ILLINOIS, INDIANA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, OR WISCONSIN, AND THE DIS...

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I bought my 1991 new almost 20 yrs ago. Drove it all through 48 states, Mexico, and alot of Canada. For the last fifteen years I have used it on Catalina Island dirt roads only. No engine problems still. So I have begun to give the old dude a major overhaul to thank it for all those crazy road trips and harsh driving conditions. Pulled it in to the garage last weekend and I am figuring out all...

jeep will not start no power to the coil will roll over fine was always hard to start now it won't start at all please help

What can I say? It's a Jeep and the short wheelbase makes for a stiff ride. I LOVE the torque from the 4.0L HO engine but it eats gas like it's going out of style. Oil leaks everywhere mostly fixed now... valve cover gasket, pinion seals, diff covers, transmission oil pan gasket, and oil cooler lines. After test driving some soft tops I'm really happy with the hard top, it's much quieter and se...

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