Cooling question
#1
Junior Member
Thread Starter
Cooling question
97 xj-I just finished installing new water pump, thermostat housing, 195F failsafe thermostat and coolant sensor. I fired her up today. No overheating or leaks but I did notice the upper radiator hose never really got hot OR when I squeezed the hose, it didn't give much pressure back at all. The heater core hose was hot as it should be. Also, After turning the car off, I took radiator cap off and the fluid was not scalding hot as I thought it should be. Didn't even burn me to put my finger in it.
Is something wrong here?
Is something wrong here?
#3
Junior Member
Thread Starter
I ran it/drove it for 20 minutes or so. I also noticed the engine temp guage went down quicker than it usually did after I shut it down. Engine was cool after about 20 min....Maybe thats correct?
#5
Junior Member
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Am I right to be concerned that the upper radiator hose isn't giving me much feedback?
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#8
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And for what it's worth, I dont know how that thing knows when to come on since it's only connected to a bracket/pulley.
#10
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#11
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Join Date: May 2012
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Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
It's a good thing to test them first. Even good quality thermostats are bad out of the box too often to miss that test.
Sounds like you have it in correctly.
I suggest you replace it with a Stant or Mopar unit. Some of the more experience folks on here have expressed very low opinions of "fail open" thermostats. I've never tried one, so I don't have an opinion on them, but you can't go wrong with a good Mopar or Stant.
#12
Junior Member
Thread Starter
It's a good thing to test them first. Even good quality thermostats are bad out of the box too often to miss that test.
Sounds like you have it in correctly.
Yes. Something is wrong.
I suggest you replace it with a Stant or Mopar unit. Some of the more experience folks on here have expressed very low opinions of "fail open" thermostats. I've never tried one, so I don't have an opinion on them, but you can't go wrong with a good Mopar or Stant.
Sounds like you have it in correctly.
Yes. Something is wrong.
I suggest you replace it with a Stant or Mopar unit. Some of the more experience folks on here have expressed very low opinions of "fail open" thermostats. I've never tried one, so I don't have an opinion on them, but you can't go wrong with a good Mopar or Stant.
#15
Junior Member
if you still not sure if you got proper flow do this...
take ur old tstat and strip all parts and install, put ur top hose on engine and stuff some pipe in end to run hot water out and away from everything. put running garden hose in cap fill and run, observ flow , adjust hose to keep rad full and flow out open end radiator, then observe temp run till everthing is steady, asumming you have hot flow out pipe...if you dont have good flow or running very hot you got blockage or bad.pump....