Originally Posted by canada_man

what is/was this? ancient remote entry? Came like this when I purchased. Jeep is a 1990 xj wagoneer limited, l6

Originally Posted by 96ss2283

Can someone explain the different functions of the clutch fan and the other electric fan under the hood?
I was told/under the impression that the clutch fan came on when the coil in the end of the clutch heated up from the radiator's heat and then began to turn and helped cool down the engine? radiator? but mine is always on when the car is running. I just replaced it last night and then spent some time watching my in dash temp gauge and the two fans. When the heater is turned on the second electric fan comes on for about 15-30 seconds and then stops; similarly when I turn the heater off. Dash temp gauge will sit around 210 and then run up to just under next has mark just short of first red section and then drop back to 210 or slightly below.
On the other dash gauge my psi will run up to about 55-60 based on hash marks and then drop to under 30 when at an idle or stop light.
Tstat was replaced yesterday as well with mopar oem replacement, about a month ago I did alternator and head gasket.
I do have a cracked exhaust manifold but that is getting fixed next week.

As you can tell by the question, I know little about the 91 XJ I own but am trying hard to muddle through my /heating up/overheating issues.

Originally Posted by DieselD

Shift gate? What exactly is that?

Originally Posted by salad

Thats the piece of stamped metal that provides the pattern for the handle to follow.

Originally Posted by salad

The clutch fan in these things is never totally disengaged. Somewhere out there I posted the actual numbers, but in a nutshell the clutch is supposed to lock up more just after the thermostat opens, and lock up fully before the electric fan is summoned (218-ish?). If your in-dash gauge is creepin toward red land I'd first make sure that it's accurate by checking with an IR thermometer, then probably just replace that clutch.

Originally Posted by 96ss2283

OK I'll try that, the clutch fan was replaced yesterday but it was a very new used on from an 87. The 87 had sat for about a year but the one on my 91 was toast.
What about the function and operation of the other fan over to the drivers side of the radiator?

Sheepishly, what is an IR thermometer?

Originally Posted by 96ss2283

OK, infrared, where am I testing to compare with my dash gauge?
What specific point am I pointing the infrared thermometer to compare the readings?

gee that google is amazing!

Originally Posted by my89xj

Anything else I need for open cooling besides the open rad, hoses, overflow bottle and konooter valve?

Originally Posted by bhennessee1

The **** is a konooter?

Originally Posted by salad

On dem Older Jeeps the in-dash gauge is a separate sensor, but the temp that really matters is the thermostat housing. Point it at that character and see if the thermostat is working properly. The sensor in the thermostat housing is the one the ECU uses to control the fan