FORD 460 Overheating Mystery
1997 Fleetwood Southwind 35P ~Ford 460 engine. I noticed the rig running a bit warm when we first got it 5 years ago. It had 23K miles on it then. It seemed each trip it would run a little more on...
Forum Discussion
"After six months we finally found out that some idiot had replaced the water pump and threw the steel plate that went between the water pump and the engine block away. The pump could not circulate the water properly. Once replaced the truck runs...and cools... like a top, but it's still a 460. You don't pass many gas stations with this baby!"
https://www.460ford.com/threads/460-overheating-solution-found.154369/
https://www.460ford.com/threads/water-pump-backing-plate.117212/
Possible this was done by prior owner's shop. Verify with your shop if the plate was actually removed and replaced. Apparently not all replacement pumps come with a new plate and apparently some technicians don't think it is needed unless supplied.
This apparently reduces coolant flow. So again back to the flow test.
https://www.460ford.com/threads/460-overheating-solution-found.154369/
https://www.460ford.com/threads/water-pump-backing-plate.117212/
Possible this was done by prior owner's shop. Verify with your shop if the plate was actually removed and replaced. Apparently not all replacement pumps come with a new plate and apparently some technicians don't think it is needed unless supplied.
This apparently reduces coolant flow. So again back to the flow test.
