My Ford E350 running a bit hotter
I recently had one of my cylinder heads rebuilt and a new exhaust manifold installed, as well as a new radiator and thermostat - just got back from a trip to Colorado and there were several occasions ...
Forum Discussion
Had a similar problem and it was not overheating.
Get a infrared thermometer when the gauge reads hot stop open the hood and aim the infrared thermometer at a angle along the length of the upper radiator hose. When I did this found the temp was the same as when the gauge was reading lower. Turns out that in our e350 there is a resistor in the instrument panel that was going out causing the temp gauge to spike. Watch your fuel gauge we noticed that it would change when the temp gauge spiked.
Get a infrared thermometer when the gauge reads hot stop open the hood and aim the infrared thermometer at a angle along the length of the upper radiator hose. When I did this found the temp was the same as when the gauge was reading lower. Turns out that in our e350 there is a resistor in the instrument panel that was going out causing the temp gauge to spike. Watch your fuel gauge we noticed that it would change when the temp gauge spiked.
