my apologies for the lack of information.
I have shot the thermostat housing and also just below the thermostat on the intake with an infrared thermometer. Temp reads 169-172 f. I really appreciate the input.
Vegas, it's a stock replacement thermostat but I'm leaning towards that possibility or that coolant may be seeping around the outside of the thermostat? It seems unlikely but I'm at a loss.
Sieg, I have a gauge in the dash that takes a reading of the coolant in the head. I have verified this reading with an infrared thermometer. When cruising or driving at any speed the truck will not get up to anything more then 170ish. Thermostat is rated for 192.
Vince, I'm not quite sure what you mean. Why go to a bigger rad? or ?
Samckitt, this is what I always thought. So I'm pretty stumped at the moment.
I have a 180f thermostat made by STC, going to try that just to see if anything changes. Will report with the results.
Thanks again for the input.
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