Well, I replaced the coolant and thermostat in wife car. Well, twice now the rubber seal that goes around the thermostat has broke and it has leaked. I replaced the whole unit under warranty both times. What gives? Fresh coolant. It doesn't over heat or anything. Is the thermostat I am getting just junk? Auto Zone was the only one who had it. Made by valuecraft. Should I keep the thermostat and see if Napa has the o-ring? Maybe it's made better? Or?
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If it was me, i would buy the thermostat from the dealer and be done with it. If your rather buy the aftermarket thermostat from a auto parts store, I would use some high temp RTV and be done with it.
Originally posted by Jeep4cern View PostWell, I replaced the coolant and thermostat in wife car. Well, twice now the rubber seal that goes around the thermostat has broke and it has leaked. I replaced the whole unit under warranty both times. What gives? Fresh coolant. It doesn't over heat or anything. Is the thermostat I am getting just junk? Auto Zone was the only one who had it. Made by valuecraft. Should I keep the thermostat and see if Napa has the o-ring? Maybe it's made better? Or?Drew
95yj Six Pack
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Well. I went to Kragen. They had a seal that "seem" to fit in better. I also noticed while showing the clerk there the t-stat only goes in one way beside the o-ring. So, you have to align both! So, you align the t-state, then align the rubber o-ring with the tab. That could have been my error. But, to be safe. I ordered the new oring and RTV Well see what happens.
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ESPECIALLY in hot desert temps, your TJ's engine will run no cooler with a 180 degree thermostat than it will with the factory specified 195 degree thermostat. Thermostats don't help to keep an engine cooler in hot weather, they only help it to warm up faster in cold weather. At least when comparing different temperature model thermostats. An engine will run hotter with no thermostat since the coolant flows too fast and doesn't have time to pick up as much heat.
With both a 180 and 195 degree thermostat both being WIDE open at the normal 210 operating temperature, do you see now why it's not going to run any cooler with a 180 degree thermostat? Remember, BOTH are WIDE OPEN at the normal/designed for 210 degrees.The Geezer Jeep: http://www.greentractortalk.com/jerryb/index.htm
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Originally posted by Jerry Bransford View PostESPECIALLY in hot desert temps, your TJ's engine will run no cooler with a 180 degree thermostat than it will with the factory specified 195 degree thermostat. Thermostats don't help to keep an engine cooler in hot weather, they only help it to warm up faster in cold weather. At least when comparing different temperature model thermostats. An engine will run hotter with no thermostat since the coolant flows too fast and doesn't have time to pick up as much heat.
With both a 180 and 195 degree thermostat both being WIDE open at the normal 210 operating temperature, do you see now why it's not going to run any cooler with a 180 degree thermostat? Remember, BOTH are WIDE OPEN at the normal/designed for 210 degrees.
Scott
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