is something wrong with my jeep running to cool
02-16-2009, 04:59 PM
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Year: 1992
Model: Cherokee
Engine: 4.0 I6
is something wrong with my jeep running to cool
it has never got over 220 let alone 200 i know my thermostat is bad would it help with mileage if it ran a little warmer
02-16-2009, 05:10 PM
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Year: 1987
Model: Cherokee
Engine: 4.0 liter RENIX I-6, DIY Cold Air Intake, 2.5 FM Exhaust, 3 Core Radiator
There are people out there who swear that the 195 degree stock T-stat has to be there for your XJ to get it's best mileage. I get 20-22 MPG on the highway every trip with a 180 degree T-stat. I know the 180 dregree T-stat helps keep my engine from melting down when driving in a hot area....and the heater gets plenty warm for me in the winter and cold areas. So, I say that the change to a 180 degree T-stat can only help your 4.0 XJ engine.
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