Originally Posted by ruxpin22
I am having the same problem with my f 150 98 what sending unit did you replace and also mine acts up with in two to three km of driving I shut off and start 10 sec later and all is fine replaced rad , water pump and the thermostat twice still nothing no coolant in the engine oil or coming out the exhaust and the heater core is not leaking could this maybe due to a blockage in one of the ports in side the engine itself how would i check
also have replaced the cap as well
I am just plain out of answers on this one and ford has no idea can anyone help !!!!!!!!!
Sounds just like the same problem I had w/my f-150. My engine was NOT actually overheating, the gauge just said it was (liar.liar).
IS your engine actually overheating? While I'm NOT a mechanic and can't give exact details, you should be able to tell after you raise the hood if the temperature is normal or really hot, and if the gauge says overhot and there's no steam coming out, well.....
The "sending unit" is what tells your gauge what to say, and they do go bad giving false readings. it's a small unit screwed into the engine block with usually one wire coming off it. I discovered this was my problem when my temp gauge went to "oh shit" in the middle of nowhere but the truck still drove fine all the way to town, and then didn't need any coolant or cooling of to continue!