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So I'm replacing my head gasket tonight and I get the head off and look at the old gasket and new gasket. They match up just fine. However, neither of them match up with the coolant ports on the head or the block. Both gaskets have a few small circles that match up with some of the coolant...

Is it possible to remove the head to replace the head gasket without removing the intake and exhaust manifolds? Those bolts are a real pain in the knuckles to get at...

Has anyone noticed a change in mileage (good or bad) when removing the catalitic converter, or changing to a high flow cat??

Alright I've been leaking oil since I bought the thing. I have a 90 xj with the 4.0. At first it was just a little drip when I would shut off the engine, so I replaced the rear main seal. Then it got worse. Long story short I've replaced the rear main twice and dropped the oil pan even more...

I did a search and found a lot of threads about thermostats etc., but not any quite like this. The temp on my '90 xj is constantly up and down. It seems like the thermo keeps opening and closing. It will get up to 210 or so then drop to about 130 and back and forth constantly. This is the...

Thanks for all the responses. It turns out my 55mph shimmy was the result of a broken front right u-joint. I found a very detailed step by step from ChiXJeff from a couple months ago so that should help. Any thoughts on installing locking hubs? Has anyone done it on a cherokee? Was it worth...

I get a strange vibration in the front end right at about 55mph. It's fine at 50 and below and 60 and above. I thought it was my tires being out of balance, but after buying new tires that I needed anyway it hasn't gone away...Any ideas?? Thanks

I looked through the last 20 pages of posts before writing this and couldn't find anything exactly like it so I apologize if this question has been asked a million times in the past. Anyway, when driving in 4H, it will intermitently pop out. There is a loud poping noise that sounds like it's...