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Replacing exhaust/intake manifold gasket on '89 4.0 xj. The metal port rings on the gasket are flat on one side and rounded on the otherside. Does it matter which side faces the manifold and which faces the head? I had just replaced the gasket and it blew out after a few hundred miles. Want to...

Just replaced exhaust manifold on '89 xj, 4.o, auto, w/ 235k miles. Original manifold cracked at the usual place for these motors. Anyways after a couple of hundred miles after replacement, the #6 exhaust port portion of gasket migrated out toward the firewall. You can see the metal ring part of...

Tired of trying to find the egr tube that I cracked while replacing my cracked manifold. Any problems you guys can see if I just head to Home Depot and get some 5/8 copper pipe, and then bend and flare it to OEM form. What happens to copper after prolonged exhaust exposure. The seal between the...

'89 250k auto np 231- problem with tc linkage, keeps popping out of pivot in tunnel well. Does tranny mount bolt to tran or just crossmember? Tranny mount bolts to crossmember are tight, but with all that oil and sludge not sure it there were two bolts holding mount to botton of trans. I think...

Stock '89 4.0 aw4 229K np231. My transfer case linkage keeps popping out of its pivot under the tunnel well. The shifter shaft pops out of the brass pivot cradled opposite the TC. This is happening during city driving! The pivot looks good, there is a little rattle as many experience, where is...

Just replaced 3 tie rod ends on stock '89 xj and immediately getting popping sounds up front. Torqued to spec, did search. Are these things suppose to break in. Anybody else have problems with Quadratec tie rod ends. They pop when moving and turning left to right, and vice versa. Don't sound...

Getting ready to replace front hub assembly on my '89. Axle nut is to be torqued to 175 ft/lbs, but is that with it weighted on the ground or suspended on an axle stand. Not sure if it matters, but it seems to when torquing wheel lug nuts.

At idle and off throttle while driving, a failing alternator bearing was producing a very noticeable knock. Sometimes it sounded more like a rattle. But it never squealed. Alternator replaced. Now I can actually hear a slight rod knock and sticking lifter. On to the next project.

Have searched the forums, done the troubleshooting (knocks while engine loaded or not, and immediately upon start up to operating temp-rod knock and flexplate ruled out) and still not sure what is causing the knocking sound on my 89 xj. Broomstick technique inconclusive. It's getting louder and...

Replacing steering box. I'm using a heavy duty puller to pull the pitman arm off, but the arm is stuborn. Each time I can tell I'm stressing the theads on the puller but the arm doesn't move. What tricks might work. Does it matter if Jeep is on ground or not. I wouldn't think so. '89 205k miles...

I've replaced the left caliper and flexible brake line, but Jeep still wants to pull to right under braking. It's not suspension or tire related, brake dust pilling up faster on right front wheel than left. More pad material remains on left caliper than right. What's causing loss of pressure to...

I live in Pleasant Hill and am trying to diagnose a sound from front of engine. Flywheel is torqued down, I'm not sure what piston slap or rod knock sounds like. I think its the timing chain slapping the housing but would like second and third opinions. It's been doing it as long as I've had the...

'89 4.0 auto w/ 200K miles 4x4 command trac When climbing through mountain highways, trans doesn't downshift to third when I feel it should. As the climb gets steeper, and third would be the right gear, the trans won't shift until later, skipping third and shifting all the way down to second...

Amongst other things, I'm a simpleton when it come to electronics. I was curious if anyone knew why the the voltage drops a little as the car warms up. On start the gauge is at 14v and then drops to about 12v at operating temp. What am I missing, or is it a Jeep thing. 89xj 4.0 auto 200k

Going to get Hella E-codes for stock '89 xj w/200K miles. What's the max wattage bulb, 60/55w, 100/55w, 100/80w, I could effectively get away with w/o replacing stock harness. Is anything past the 60/55w bulb a waste due to diminishing returns with the stock harness?

'89 xj, 4.0, auto, 195k miles. I've recently replaced lca's, track bar, front swaybar bushings and I'm pretty sure I've got the adjustment on the power steering box tightened down, but on the road the jeep likes to wander. Nothing major, but I do constantly move the steering wheel to check it's...

'89 w/192k miles, auto, 4.0. At idle I hear an intermittent rattle that comes from somewhere inside the motor, not outside pulleys, fans, etc. Happens every 5-10 seconds and lasts only a second or so. It's an internal rattle that resonates the loudest from underneath the engine at the oil pan...

As a conditioned XJ owner I'm not too alarmed by a small power steering fluid leak. While I'm tracing that, I've heard that power steering fluid rots rubber, is that true. Small drip develops on bottom of lower radiator hose. Should I hasten the ps fix before I blow lwr radiator hose.

Was bleeding air out off 4.0 cooling system and stripped temp sensor on replacement. Bought another and stripped it also. Bought another, used some RTV, it leaked. Inspection of original reveals only about two rows of threads contacting and some kind of gunk used to seal. Threads inside head...

Catastrophic lower radiator hose failure on '89 w/ auto. In a blocks distance lost all my coolant through 1/2 inch slit in hose. By the time I pulled over and killed motor, temp gauge had just pegged. What should I be checking to see if I did any damage? Need to get more coolant, but noticed on...