150*running temp
11-04-2013, 06:20 PM
#1
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Year: 1999
Model: Cherokee
Engine: 4.0 H.O
150*running temp
My XJ runs 150 at all times, aside from idling for a while in the hot sun. Highway, or in-town.. 150* How bad is this?
93 Block, 89 manifold.
93 Block, 89 manifold.
11-04-2013, 06:26 PM
#3
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Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
If that's correct, it will affect your mileage. You want to be closer to 200*. There might even be an issue or your computer, (ECM), running it on "default" settings, in "open loop". The 195* OEM T-stat really is best. I bought a non OEM, then ended up changing it. (don't forget to put the hole in the t-stat up at 12:00!). 
11-04-2013, 08:45 PM
#5
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Model: Cherokee
Take out that thermostat and flush your block with a garden hose and or pressure washer and stick a blow gun in all your water lines and blow out all the nastiness.
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