2004 Ford Freestar Q&A
2004 Ford Freestar Question: engine overheating
my temperture gauge on my van reads normal when driving at 50-50 mph and then when i speed up 60-65 it goes up to about 3/4 of the temp gauge. i have changed radiator and thermastat but to no avail it still appears to be getting hot. funny thing it does not do this all the time. i can go days without it acting up. also when it is [overtemping] according to the gauge we have check the resevoir and it is not boiling as it should be. according to my mechnic the temp sensor are reading at abouit 230 degre's at high idle. could it be a false reading and if so whats temp sensors could we check - hbaf023
did you replace the rad with a new unit?? it sounds like a circulation problem. I would also look at the water pump impeller. may be rotted out or loose on the shaft. Roy - mastertech6371
I'm thinking it could be a false reading from the temperature sending unit. 230 degrees is quite hot for a vehicle going down the highway with maximum air flow. As Roy implied - is the radiator you replaced the like-kind OEM style or used or aftermarket? You do not want this engine overheating by the way...even with new style gaskets, the 3.9L (formerly 3.8L) V6 is succeptable to head gasket failure. - DaveJHM
My wife's van did this also. It is a bad head gasket that is causing the exhaust to flow into the coolant system. It's caused by the pressure that builds the faster you go. Get it checked out before you crack a head. - djmas1977
my engine orverheats as soon as i turn the ac on. i had my radiotor flushed and serviced but it still overheats
I have replaced the thermostat and coolant sensor. Disassembled the water pump and it was fine inside. Its strange that ist goes back belowe 1/2 way on the temp gauge after a little bit while stil...
it overheated and the hoses are fine, i noticed the fan not coming on.