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Old 08-18-2007
JTG JTG is offline
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Cooling System Problem Need help

Hi,
As I run my 96 ranger for more than 5 Mins, The release valve on the radiator cap lets out fluid and the Collant resevoir fills up, and the temperate guage shows very hot. I also noticed that the top radiator hose that goes to the thermostat Effectively collapases like a vacume is being created (No water running through the hose). Seems Like the thermostat is stuck closed. Does this sound like the problem?
Thanks
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Old 08-18-2007
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theremostats are designed to stick open, not closed.....

i think it is a bad water pump......

first thing i would do is replace the t-stat, and if that doesn't fix the problem (which i don't think it will) then it is your water pump.....
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Old 08-18-2007
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I've had a few thermostats get stuck closed with similar results. Check that first.
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Old 08-24-2007
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Sounds like a bad Thermo to me....My porsche did the almost the same thing.
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