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  #1  
Old 05-19-2010 | 12:58 PM
lkamp6969's Avatar
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Post 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
 
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  #2  
Old 05-19-2010 | 04:28 PM
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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.
 
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Old 05-19-2010 | 06:53 PM
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It should always spin, but the clutch should adjust how much slip there is according to the temperature.
 
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Old 05-20-2010 | 08:29 AM
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yea it is mechanical and is that typical that i am getting around 10 mpg with that truck
 
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  #5  
Old 05-22-2010 | 06:12 PM
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I have a 97 with a 350 SWB 2WD and I get 17-20 depending on how I drive
 
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Old 05-23-2010 | 07:18 AM
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sounds about normal for the engine size. I get about 12-15 in my truck. Mine is the 5.4L Ford 351
 
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Old 05-23-2010 | 08:55 AM
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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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