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Temp Gauge goes down when Heater is on


ben_97

New Member
Joined
Jan 11, 2016
Messages
1
Vehicle Year
1997
Transmission
Manual
All,

I'm new to these forums, and I would like to ask a question about my 97 Ranger 4.0 OHV. As far as I can tell all looks good with the Coolant system. The truck does not overheat at all. The Temp gauge never goes pass the half mark. It pretty much stays constant below the mid-point mark until I use the heater. When the heater is turned on and while driving the Temp gauge goes down to just above the C and then it goes back up to the mid-point mark. It does this time and time again while the heater is on.! Can someone tell me if this is normal for this truck or is there something wrong with the Coolant system that I should look into. Thermostat, Rad Cap, upper/lower Hoses are new and radiator has been flushed. Also the heater works great. Nice and toasty in the cab.

Thanks
Ben_97
 

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