my truck is overheating can anyone help

715

Asked by Feb 21, 2015 at 12:34 AM about the 2001 Ford F-150 XLT Crew Cab 4WD SB

Question type: Maintenance & Repair

I have a 2001 f150 with a 4.6l romeo engine. I had a oil leak out of the back of the
passenger side head. so i changed the head gaskets the water pump and the thermastat.
I drove the truck for about an hour and a half pulling a trailer. then all of a sudden the
temp jumped from half way to hot. now I can only drive it for about ten minutes before it
will run hot. If anyone can please help thanks.

6 Answers

575

Most likely the new thermostat you put in failed.

1 people found this helpful.
65,525

Is the coolant level still good? If so the cooling system may need to be purged of air. T-stat could also be bad.

2 people found this helpful.
715

I just took the thermostat out and done the boil test. it looked like it was working like it supposed to. I'm going to replace it any way. can any one tell me the correct procedure to purge all the air out of the system.

1 people found this helpful.
575

To purge the air out simply let the truck warm up for about ten minutes until the thermostat opens (temp gauge moves from the C position). Then add more coolant. You may need to repeat this a couple of times. Then after you drive it for a half hour or more top it off again. Note, the coolant capacity for the 4.6L engine is 20.5 quarts. Also, make sure you are mixing the coolant with water the manual specifies a 50/50 mixture. The manual also warns not to mix different colored coolant and recommends "Motorcraft Premium Gold" (yellow colored).

4 people found this helpful.
Best Answer Mark helpful

Get a cadet take out the thermostat and leave it oout all summer and put it back in at wenter

Can I take my thermostat out of my ford f 150 for the summer

Your Answer:

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