so i recently bought a 2001 cherokee sport that has oil pressure problems.
when you start it the pressure sitts at 40psi but after 5min of driving it drops to 0psi and the temp starts to go way up, any ideas on where to start??

 

Get a mechanical gauge and make sure your readings are right.

 

Is it knocking?

Does it have oil in it?

I'd start with an actual mechanical oil pressure tester.

What's the coolant look like?

What color is it?

What's your dog's name?

 

well im sitting in school so i'll test some of that stuff tonight, and TY for the fast responses (dogs name is annie )

 

Coolants pretty grungy oil pans full and noticed the radiator isn't even hooked up! When it stops rain I'll check the oil pressure

 

Ok so I checked my pressure with a mechanical gauge and got the same readings as my dash gauge so any thoughts on where my oil pressure is going?

 

Oh and there is no knocking

 

The radiator isn't hooked...up?

 

It is now

 

Coolant being disgusting can be normal to a certain extent.

 

So I'm prob going to rebuild or buy a replacement engine. All Cherokee 4.0 fit all years right?

 

So turns out I most likely have a cracked head does affect oil pressure?

 

how the hell is your radiator not hooked up?
i hope you paid like 500 bucks for this jeep bc you have nothing but problems with it

 

No. There are differences in the engine through out the years, and you can not use a 2001-04 WJ or Wrangler 4.0 in an XJ. It would be best to find an engine that is from the 99 and a half to 2001 XJ. You can use a 91-95 4.0 with some minor fab work.

 

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