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Old 08-18-2007
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JTG JTG is offline
I am: James Guzzo
Join Date: Aug 2006
Location: Pittsburgh, PA
Vehicle: 1996 Ford Ranger
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Cooling System Problem Need help

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?
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Old 08-18-2007
lifted97ranger's Avatar
I am: Maurice Jones Jr.
Join Date: Nov 2005
Location: Charlestown, IN
Vehicle: 1997 Ford Ranger STX/XLT
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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
Needforspeed3685's Avatar
I am: Tim Martin
Join Date: Aug 2005
Location: Lowell, AR
Vehicle: 2000 Ranger Sport 2.5 2wd
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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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I am: Jeremy S
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Sounds like a bad Thermo to me....My porsche did the almost the same thing.
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