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Question: When viewing the cam bearing bores from the front of the engine (4.0), what clock position are the cam bearings oil gallery holes in the block? Re. AERA TB 1996

Does anyone have a preference or opinion of which off the self cam/lifter break-in lube to use. I've read in several forums on the net above the use of GM COS 88862586 as a cam/lifter break-in lube. The bottle I got from a Chevy dealer says that GM does not recommend it as an additive to...

I tested my evaporator using a hand operated vacuum pump to check for leaks. Pumped it down to 20 inHg and let it set for 12 hours and it didn't leak down. FSM says to evacuate the system at 26 inHg. Is this method adequate to determine the integrity of the evaporator? I realize it may be on...

Went to my local Chrysler dealer to get a set of valve springs for my '99 4.0 and the counter puke said there is none in the system anywhere and that Chrysler has not reordered them. Looks like the end may be near for buying new OEM parts for our 4.0 motors. Is there a recommended...

FYI If you are looking for a Mopar (OEM) service manual, or other data, for your XJ, go to this site. Hard copy and CD formats available. https://www.techauthority.com/en-US/Pages/Home.aspx

Just exactly what does 'flashing a PCM do?

Has anyone used this selant by Permatex? http://www.permatex.com/products/Automotive/automotive_gasketing/gasket_makers/Permatex_Automatic_Transmission_RTV_Sealant.htm Getting ready to reassemble my TC using this stuff and was wondering if there's any problems with it.

I have a '99 with 4.0, AW4, and NP242 TC. My TC is making noise and metal in the oil, so I think it's time for it to go by by. I have a line on a 2000 242 TC but I'm not sure if it will work in my '99. The parts catalog shows P/N 5209889 for '97 -'99, and P/N 5209899AA for the 2000. Does...

'99 XJ, 4.0 Thought I would post some info about some maintenance I just performed on my New Process 242J Transfer Case. Getting ready for the upcoming winter in the tundra (Michigan) I did my routine maintenance on my truck, including transfer case oil change. I decided to 86 the 10mm...