V10 Overheating
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Trailering
Joined: Aug 2018
Posts: 24
Likes: 4
From: MT
V10 Overheating
2000 V10 that will overheat only when towing and going up a hill. Has 244k and I do know it's still the original radiator. Just looking for some information on the first place to check or where to start.
More Turbo
Joined: May 2015
Posts: 632
Likes: 142
From: Staten Island, NY
Has the thermostat been changed, and if so was it changed with a Motorcraft part? Aftermarket thermostats are unreliable and often cause problems. Have you changed your coolant and was the proper type used? Remember coolant doesn’t last forever even if it doesn’t leak out
Cross-Country
Joined: Feb 2026
Posts: 50
Likes: 20
I’d start with the fan clutch. https://www.doityourself.com/stry/ho...t-a-fan-clutch
Do you hear it engage when pulling a hill ?
Do you hear it engage when pulling a hill ?
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Trailering
Joined: Aug 2018
Posts: 24
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From: MT
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5th Wheeling
Joined: Oct 2009
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From: Colorado Springs, Co
Before you replace the radiator, remove the plastic shroud that's on top the radiator and look down between the AC condenser coil and the radiator. I found the front of my radiator was plugged with debris. Cleaning this off the radiator fins fixed my overheating issue.
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Trailering
Joined: Aug 2018
Posts: 24
Likes: 4
From: MT
One more thing, I mostly use this for towing my car trailer and the over heating has never happened before. It was all of the sudden, with the trailer loaded and going up a fairly steep hill that it got hot. Not sure if that matters or not.
