Fan help

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May 19, 2010 | 12:58 PM

lkamp6969

Thread Starter

Junior Member

Joined: May 2010

Posts: 6

Fan help

i have a 94 gmc 1500 2wd 5.7 i get 10 mpg no matter what and im tryin to think of ways to make it better and i noticed that my fan never stops spinning i thought there were centrifugal

May 19, 2010 | 04:28 PM

Worf

Ford and Dodge Truck Forum Moderator

Joined: Mar 2010

Posts: 862

From: United States

Is it a electric fan or mechanical? If it is the mechanical fan, the reason it may not stop spinning is the fan clutch is either bad or missing.

May 19, 2010 | 06:53 PM

Mr_Shamrock

Chevrolet/GMC, Racing, Recreational Forum Moderator

Joined: Apr 2009

Posts: 2,267

It should always spin, but the clutch should adjust how much slip there is according to the temperature.

May 20, 2010 | 08:29 AM

lkamp6969

Thread Starter

Junior Member

Joined: May 2010

Posts: 6

yea it is mechanical and is that typical that i am getting around 10 mpg with that truck

May 22, 2010 | 06:12 PM

Robrt32

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Joined: Mar 2010

Posts: 33

I have a 97 with a 350 SWB 2WD and I get 17-20 depending on how I drive

May 23, 2010 | 07:18 AM

Worf

Ford and Dodge Truck Forum Moderator

Joined: Mar 2010

Posts: 862

From: United States

sounds about normal for the engine size. I get about 12-15 in my truck. Mine is the 5.4L Ford 351

May 23, 2010 | 08:55 AM

Mr_Shamrock

Chevrolet/GMC, Racing, Recreational Forum Moderator

Joined: Apr 2009

Posts: 2,267

Quote:

Originally Posted by Worf

sounds about normal for the engine size. I get about 12-15 in my truck. Mine is the 5.4L Ford 351

A 5.8 is actually a 351 I think yours is closer to a 330.

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