Update for summer 2012

The specs on my Jeep today (30 Aug 2012) are

Make: Jeep
Model: Cherokee Sport (XJ)
Engine: 4.0L inline 6
Transmission: AW-4 Automatic (4 speed with overdrive)
Transfer Case: New Process 231J with SYE
Lift Kit: Rubicon Express/TNT Customs with ACOS -  7" total lift
Tires: BFGoodrich KM2 - 35x12.50x15
Wheels: Cragar 15x8 - 3.75backspacing with 5x4.5 bolt pattern

My XJ has 253500 miles on the odometer.

At ambient air temperatures below 100 degrees the temperature gauge reads 212 degrees and has no problems at all. When the ambient air temperature gets above 110 degrees and my air conditioner is turned on the temperature gauge slowly creeps up and over 210 to 220 then spikes up to 250 and then the "Check Gauge" red warning light turns on.


The old Jeep has over 250,000 miles on the odometer and about 15,000 on the new motor.  I only had two days this summer that the old XJ ran too hot and I had to turn off the A/C in stop and go traffic.  The new motor did help quite a bit with the overheating but it seems the big culprit has been the electric fan.  It was still functional but not turning as fast as it could.   I replaced it with a new electric fan and that has made a large difference.  Like I said it still overheats on days around 110 and above and in stop and go traffic with the A/C running but all I have to do on those few days is turn off the A/C.  I'm looking into the Triple Threat fan with aluminum shroud as my next upgrade for this issue.  I will be interested in seeing if that cures this nagging problem for good.