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Dan, Technician
Category: Ford
Satisfied Customers: 23747
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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I have a 1998 ford f150. have changed thermostat and done a

Customer Question

I have a 1998 ford f150. have changed thermostat and done a radiator flush.engine still overheats after about half an hour driving. what could be the problem.
Submitted: 11 months ago.
Category: Ford
Expert:  Dan replied 11 months ago.

Hello my name is***** it overheat both while going down the highway and while at idle? Thanks.

Customer: replied 11 months ago.
only on the highway
Expert:  Dan replied 11 months ago.

Cleaning a radiator often doesn't help, I'd recommend replacing it at this point. You can use a digital temp gun to check for hot/cold spots on radiator which would indicate it isn't cooling efficiently. Let me know if you have more questions, thanks.