The water pump Fit, but the electric fan clutch didn't?

SEVILLESBEAR

MEMBER
2007 FORD F-150
4.6L
V8
4WD
AUTOMATIC
197,000 MILES

What happened was the water pump went out, so the serpentine shredded somehow, and gut stuck under the cooling fan clutch and cut some wires the fan wires, the cam position sensor wires. The MAF sensor wires were okay, so we used a water pump out of a 2004 Ford F150 with a 5.4L. The water pump fit, but the electric fan clutch didn't so we used the fan that was on the water pump. It's not an electric one, it's a free spinning one, it goes faster when you step on the gas. The truck hasn't overheated or anything, but we can only go like 40 miles an hour and the RPMs are running high. So, I'm hoping you can tell me what my problem is. I wired all the wires back and everything just seems like the fan is the reason it won't go any faster.

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
42,895 POSTS

It sounds like the fan clutch on the installed clutch fan is locked up. Can you spin the fan with the engine off? Also, is there a check engine light on?

Please check out these guides:

https://www.2carpros.com/articles/fan-clutch-symptoms

And if the check engine light is one you can get a code scanner from Amazon for about $20.00.

Here is a guide/video to show you how:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Here is a scanner link:

https://amzn.to/3Qi1SS6

Please let us know what happens.