I have a 1997 Ford Explorer XLT with 4.0 Engine.
I had the engine rebuilt 1 week ago. The check engine light comes on after about 5 minutes of use and the temperature gauge goes up to about 3/4 hot when I am driving, but goes back to normal when I come to a stop.
One time it actually over heated.
I took the vehicle back and was told that the new thermostat was defective and a new one installed, but the truck is still over heating. I was also told that my radiator is probably clogged.
A couple of friends who are mechanics told me that it could not be a bad radiator because the truck would overheat at idle also. I was told that it was a bad head gasket.
What could this possibly be since the engine was just rebuilt?
Thanks in advance for your help.
You could just have an air pocket in your coolant system, a malfunctioning cooling fan, or you could have a much larger problem. You need to take your vehicle to a technician that you trust and have the problem properly diagnosed. There are a few tests that can be performed to determine why the vehicle is overheating. It's always best to spend a couple of dollars to have it properly diagnosed as opposed to guessing and replacing perfectly good parts. If you are having trouble finding a technician you can trust, Ask Patty has a list of quality and female friendly shops. You can also ask neighbors, family members and coworkers who they trust.
〉 Answered on Mar 30th, 2008 by Suzanne Grego, Technician at City of Philadelphia Fleet Management