2000 Ford Ranger/ Temp. Guage/ Low Reading

2000 FORD RANGER
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DLEMONS
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I noticed today that my Temperature guage barely moved after a short
trip of about 3 miles. The morning temperature was in the low 30(s).
The vehicle's heater was blowing warm, but not hot air.
I checked the engine coolant level and it was correct.
What I did notice was this.
After discovering the problem I opened the hood and started the engine.
I let it idle for approx. 10 minutes but still no guage movement. I then turnd the heater on and saw that the guage needle moved ever so slightly down.
I shut the engine off and felt the upper hose, which was hot. I then felt the lower hose which was cool. I am assuming that the thermostat is not opening.

Is it possible for the outside air temp. to be cooling the engine to the point of not allowing the temp to rise high enough for the thermostat to open?

Could the coolant mixture be incorrect by having too much straight coolant?
Help would be greatly appreciated.
Jan 16, 2006 at 8:15 PM
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PALOMA PAUL
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Can you say new thermostat. The one in you vehicle is stuck open thus the coolant is not reaching operating temperature. Put a new one in and you'll be toasty in no time.
Jan 16, 2006 at 9:14 PM
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DLEMONS
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Thanks Paloma Paul. You were right on the money.
Replaced thermostat this AM and guage and heater now works properly.
Jan 17, 2006 at 10:59 AM
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