Fuel heater?

[Texas Diesel]

It seems to me that the fuel heater is on whenever the ignition is on. Why do we need the fuel heater when the ambient is 100*+ ? Am I missing something here? Is in controlled by something else?

 

[illflem]

Your fuel heater has an internal thermostat and shouldn't be running all the time. Not positive but seem to recall 50° fuel as the cutoff point. It doesn't take long for your whole tank to warm just due to the excess fuel flowing though the injection pump, it probably heats the fuel more then the heater. I took some readings with a infrared temp gun last winter, the outside temp and the temp of the bottom of the fuel tank were both 20°F at the start, after 60 miles the fuel temp was up to 115°.

 

[Texas Diesel]

Yep you're right, I should have read first. On @ 47* +/-8* off @ 70*+/-8*.



Thanks