You might not have overheating issues
We had a recurring issue with occasional overheating on our RV till our new mechanic told me to use a infrared thermometer and measure the temp of the upper radiator hose the next time it overheated. ...
Forum Discussion
j-d wrote:
OP - Do you hear your Fan Clutch engage as the temp comes up? We had an '83 chassis and were lucky to have an OEM/Ford Fan Clutch that still worked. We'd hit a grade, gauge would rise, fan would roar. Come off grade, temp gauge would drop and roaring stopped. Do those things happen with your '87? I replaced our radiator with a "high efficiency" one, don't know if that changed anything, but we never overheated. I didn't do IR Heat Gun tests.
I mention OEM fan clutch because Ford no longer sells it and it seems the aftermarket ones are not as effective.
Transmission in a 1986/7 E350 would be a C6 and any temp gauge would have to have a sensor added.
Yes the fan clutch does kick in. Originally even though we would hear the fan clutch kick in we thought it might be sticking at times and not kicking in and that was the cause of the overheating.
There used to be a sizable increase on the temp gauge before the fan clutch would kick in but now it stays pretty much in the same spot with the fan clutch cycling.
