F-150 still overheating

[ Follow Ups ] [ Post Followup ] [ Off Topics Forum ] [ FAQ ]

Posted by lonestarjeff on July 25, 2018 at 20:32:13 [URL] [DELETE] :

Well, the old 2000 F150 has been perking along just fine until the dog days hit around here this past month. The 4.6L V8 has 222k miles on it now, but the overheating problem started a couple of summers ago when I would tow my trailer in 90+ degree weather, never any trouble in any conditions prior to that. Now, it overheats any time I go out in 90+ degrees IF I run the A/C, no problem if I leave the A/C off.

Back when this started a couple of years ago I replaced the following in this order...coolant flush & fill with a new T-stat...no effect; fan clutch & T-stat(again)...no effect; lower radiator hose...no effect.

I bought a new Gates water pump at the time, but just installed it yesterday. I didn't see any signs of wear on the old Motorcraft pump, it actually looks like a better pump than the Gates, longer impeller vanes.

If the new pump made any difference, I'd say the problem is actually worse. So, I guess the only thing left to do is find a radiator shop or order a new one.

Follow Ups:

Post a Followup:
Name   : 
E-Mail : 
Message: To add a single image to your post, click here. To add multiple images to your post, click here. Optional Link URL : http://www.yourwebsite.com Link Title : Website Title Optional Image URL: http://www.myimages.com/mypic.jpg
Enter image characters into the text box.

Press Preview Message button below to proofread message & check if images and/or links are shown before posting message. Press
browser's back button if correction is needed. Press Post Message button on Preview Message page to finalized your post. Thanks!

[ Follow Ups ] [ Post Followup ] [ Off Topics Forum ] [ FAQ ]