Put a 195 stat in it.

As for the 4wd not engaging, here's two things.

Here's how the factory suggests you shift the transfer case and I've been doing this since these things were new and I worked at the dealership. Quoted from the owner's manual. The suggestions in CAPS are mine.

"To engage, shift the transfer case lever from 2H to 4H while the vehicle is moving at any legal speed". I LET OFF THE GAS, THROW THE LEVER, TAP THE GAS AND LET OFF.

4L position: " To engage, slow the vehicle to 2-3 MPH , shift the transmission to Neutral, then shift the transfer lever to the right and pull firmly rearward to 4L".

TO SHIFT OUT OF 4L, SHIFT THE TRANSMISSION INTO NEUTRAL WITH THE VEHICLE STOPPED, SHIFT THE TRANSFER CASE LEVER TO 2H, THEN THE TRANS TO D IF YOU HAVE AN AUTOMATIC, OR INTO FIRST GEAR WITH A MANUAL, AND CONTINUE ON.

Revised 11/20/2014

https://www.cherokeeforum.com/f51/fr...ss-91-a-38629/

What's your oil pressure when warm at idle and then at speed?

 

Oil pressure hot at idle=20psi cold=40psi at speed=about 35

 

Youre gonna do more harm than good with no thermostat dude. Get a 195 mopar one in there

 

What harm would it do if I resolved the overheating issue?

 

Solved the overheating issue...no you masked it.

Cruiser have fun. Im out

 

I dunno its been converted to open loop cooling and we took out T-stat. Before the old T-stat which was replaced after head gasket. Was way too high temp and that is how the first head gasket blew. Now correct me if I'm wrong but just removing the T-stat just let's coolant constantly flow threw the radiator. As far as I know the only con's to removing it is that the heat may take longer to warm. And on my oil pressure issue. My oil may be lower viscosity since I cranked it so much without any spark and it was spraying fuel the whole time. So this may improve with an oil and filter change.

 

Oil pressure is good.

Put a 195 stat in.

 

First week in automotive mechanic class...

http://www.answers.com/Q/Why_does_an...d_a_thermostat

 

 

Does anybody know what the temperature is when the ecm goes into closed loop. And back on the thermostat i will get one but will it be allright for a month of summer driving? Average temps are about 70* where I'm at so idk

 

Renix doesn't go into closed loop based on temp.

It's not gonna "hurt" anything driving with no stat.

 

Ah, didn't realize it was for a renix. OP, on newer xjs. Running no stat, even in the 70* weather, would keep the jeep sensor cold and possible have incorrect data brought to the jeep. Running lean. Possible clogging O2 sensors, Cat, etc. stat holds a good amount of importance. Now cruiser will confirm with renix if youll still run very lean without one. I still agree with cruiser, get a mopar 195 stat

 

You run a bit rich.

 

By removing Tstat you proved it was not opening.