what degree thermostat is everyone running?
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CF Veteran




Joined: Nov 2010
Posts: 5,840
Likes: 117
From: In the middle of Minnesota!
Year: 1999
Model: Cherokee
Engine: 4.0
99% of 4.0 applications should run a 195 degree thermostat.
Buy your stats directly from Jeep for the best reliability and STABILITY of coolant temp.
I buy plenty of aftermarket parts. I buy my thermostats directly from Jeep.
Buy your stats directly from Jeep for the best reliability and STABILITY of coolant temp.
I buy plenty of aftermarket parts. I buy my thermostats directly from Jeep.
Could be alot of things, did it stay at the right temp before you changed the tstat?
I would never let it go above this red line:
I would never let it go above this red line:
Last edited by 89Laredo; Oct 19, 2012 at 01:35 AM.
Thread Starter
Newbie
Joined: Jan 2012
Posts: 18
Likes: 0
From: canada
Year: 1988
Model: Cherokee
Engine: 4.0
no it kept boiling over out the resevoir. i put a new tstat, new rad, new water pump, new hoses, new tem sensor, and new reservoir cap on it. it doesnt boil over anymore but it def runs hot
CF Veteran




Joined: Nov 2010
Posts: 5,840
Likes: 117
From: In the middle of Minnesota!
Year: 1999
Model: Cherokee
Engine: 4.0
I always verify using an infrared point and shoot thermometer pointed directly at the thermostat housing. That gets you close to the actual coolant temperature.
Don't want to be chasing a ghost.....test.
Thread Starter
Newbie
Joined: Jan 2012
Posts: 18
Likes: 0
From: canada
Year: 1988
Model: Cherokee
Engine: 4.0
There CAN be some inaccuracy between the coolant temp sensor and the dash gauge.
I always verify using an infrared point and shoot thermometer pointed directly at the thermostat housing. That gets you close to the actual coolant temperature.
Don't want to be chasing a ghost.....test.
I always verify using an infrared point and shoot thermometer pointed directly at the thermostat housing. That gets you close to the actual coolant temperature.
Don't want to be chasing a ghost.....test.


