That's what it is, reduce friction, less wear on parts. I'll swear by it, but "To each his own". Sense I use it in my XJ, it's been running a lot better, going on three years now. That's my opinion, If you haven't tried it don't knock it!!

 

I have a 01' 4.0. When I bought it the PO told me he pulled the rear defroster relay and used it to replace the front wiper relay (said they were the same part). does anyone know the location of the rear defroster relay? And he said "relay", I asked if he meant "fuse".

Also, I have a chance to buy back a set of cragar V-5s that used to be on my old TJ. They're 15x8 with 3.75 back spacing. Is the bs OK on them, I'll never go bigger than 31x10.5 with the cherokee (and thats probably 1 years down the road)

Thanks

 

yes it ll be ok

 

The sending unit is just for the gauge. The Coolant Temperature Sensor gives information to the computer. If one is faulty and throwing a code, I believe it'd be the Sensor.

 

That's all well and good but you recommended a friction-reducing additive for a situation that needs INCREASED friction...

I am inherently untrustful of any product where the manufacturer won't tell you what's in it.

 

Let's be honest. The label was pure rhetoric. Nuff said?

salad, maybe a site specific search on consumer reports or similar regarding friction increasing additives?

 

Moderate rocks, some mud.
Yes, I air down. I am trying to decide if I should go to 17" wheels.
With a 15" wheel, there seem to be more options on aspect ratios.
I can get higher tire height to width.

 

I'd stick with 15s unless you plan to upgrade your brakes, which few XJ drivers do

 

Had to replace water pump because it was leaking, suggested I go ahead and replace older water pump.
Jeep was not over heating prior to replacing water pump. Started jeep tested for about 30 minutes with no issues, no leak. Then I started to drive around. Temp gauge jumped through the roof. Indicator said Transmission temp was too high. Do I need to replace the thermostat? or anyone have any suggestions?

 

What model year is your Jeep? And did you burp the cooling system when you were done? There could very well be air trapped in the system, which is a sure fire way to overheat

 

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

 

Code 17 is for the sensor in the thermostat housing (computer does not monitor the gauge sender in the back of the head)

I use Standard brand for everything and have been extremely pleased with the accuracy and reliability. ACDelco is the house brand for GM, and they used to be good like Mopar, but they are using China production now and quality has been dropping for the past few years (I buy a lot of GM parts for my old Cadillac, and I stopped buying ACDelco). Delphi also used to be good (and also used to be part of GM) but quality has also been falling--bought a coil and fuel pump from them in the past six months and both are having problems, the coil farts after sitting overnight, and the fuel pump doesn't fit right.

You should also check your heater core. I got that code when I first got my beater and after trying a few things I flushed the core and heads and a bunch of straw came out from the old dried up coolant. It had created an air pocket in the core, and blocked coolant from flowing through the head, so the sensor was only reading temperature of the air and not the coolant.

 

Yes, replace the thermostat. I suggest you replace the thermostat anytime you replace a water pump.

 

Question about fuses used in the 1988 to 1996 fuse panel:


What type of fuses are used? ATO (large blade) fuses, or Mini (small blade) fuses?

 

Should be ATO/ATC. There are a few mini and maxi fuses under the hood, but I don't think there are any under the dash.

Edit: ATO fuses are Open, and ATC are Closed. It's the same form factor, but one has a hole to release the smoke if it blows