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Thermostat??????

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Old 07-11-2011, 08:39 PM
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Year: 1995
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Default Thermostat??????

Just got 95 cherokee on the road today, its been sitting for about 2 years maybe longer. Couple weeks ago got her running idled in driveway for about 25 mins temp was good. It was about 95 degrees here today i took it for the first long test drive. Temp ran up to about 235 while going down the road went down to aboput 220-225 with highewr speed. Coolant level is good. Both upper and lower radiator hose where hot, but rock hard. There was alot of pressure on the system as well. I am thinking thermosat is stuck but just wondering everyone elses opinion. Thanks
Old 07-11-2011, 08:44 PM
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The entire cooling system can be replaced for about $250 in parts, is relatively easy to do and if u replace it all at once u eliminate the guessing and only have to drain/refill coolant once.

Radiator
Water pump
T-stat
Fan clutch
Hoses
Belt
Coolant
Old 07-11-2011, 09:00 PM
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No offense, but i don't think replacing everything is a suitable answer. I would think if you've got pressure in the top hose then your water pumps got good pumping power and your thermostat isn't shut. But the lower hose has a spring in it so if its hard it doesn't necessarily mean good flow, so i'd check the radiator and make sure the fan is working properly. Hope this helps.
Old 07-11-2011, 09:04 PM
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I would check headgasket, that will cause it to overheat while driving(more bubbles entering) and it would cause rock hard hoses.
Old 07-11-2011, 09:17 PM
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I dont think its a head gasket no coolant in oil or vice versa and its not losing any coolant. Fans are also working properly. I did a search and found a thread stating about improper belt tension. I am gonna check that after work tomorrow and this weekend i will change thermostat and flush radiator. What would everyone recommend as a method for flushing the radiator??? should i just use a garden hose or should i pressurize it somehow?
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