5.0 Water Pump
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Joined: Aug 2003
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From: Isanti, MN
Is the 5.0L water pump belt or chain driven? The V6es have a water pump that's driven by the timing chain which is a much more involved procedure to change. It also dumps the coolant directly into the engine oil when it fails. NOT my favorite design.
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Joined: Aug 2003
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Likes: 742
From: Isanti, MN
Just wanted to update this thread to correct some bad info:
This is WRONG. Turns out the Duratec and EcoBoost V6es used in the cars has this design, but the engines used in the F150 are traditional belt-driven pumps. Got to thinking about this, looked up some part numbers, and then went outside with a flashlight and confirmed on my truck. The water pump is in the traditional location and doesn't look like a big deal to change. 
Lead Driver
Joined: Mar 2010
Posts: 5,505
Likes: 256
From: Woodbridge, Ontario, CA
Just wanted to update this thread to correct some bad info:
This is WRONG. Turns out the Duratec and EcoBoost V6es used in the cars has this design, but the engines used in the F150 are traditional belt-driven pumps. Got to thinking about this, looked up some part numbers, and then went outside with a flashlight and confirmed on my truck. The water pump is in the traditional location and doesn't look like a big deal to change.
This is WRONG. Turns out the Duratec and EcoBoost V6es used in the cars has this design, but the engines used in the F150 are traditional belt-driven pumps. Got to thinking about this, looked up some part numbers, and then went outside with a flashlight and confirmed on my truck. The water pump is in the traditional location and doesn't look like a big deal to change.
Back to the original post topic, I just replaced one on a 5.0L F-150 having the exact same failure as described in post #1 about two weeks ago. Since we're on the topic of the 5.0L, also noteworthy of common coolant leaks is the block heaters on these engines, a repair that isn't quite as easy as the water pump.
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From: Maine, Virginia
To make things simpler, the 3.5/3.7 V6s used in front wheel drive applications (eg. Taurus/MKS, Edge/MKX, Flex/MKT and Explorer) use a timing chain driven setup as described in post #4 of this thread. But on rear wheel drive applications (eg. Mustang, F-150 and Transit) they are externally belt driven as described by the post in quote above, while a dummy idler sprocket resides in the position inside the engine where the water pump would be on the FWD engines.
Back to the original post topic, I just replaced one on a 5.0L F-150 having the exact same failure as described in post #1 about two weeks ago. Since we're on the topic of the 5.0L, also noteworthy of common coolant leaks is the block heaters on these engines, a repair that isn't quite as easy as the water pump.
Back to the original post topic, I just replaced one on a 5.0L F-150 having the exact same failure as described in post #1 about two weeks ago. Since we're on the topic of the 5.0L, also noteworthy of common coolant leaks is the block heaters on these engines, a repair that isn't quite as easy as the water pump.
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