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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Sounds like...... a 747?

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Old Jul 5, 2015 | 05:12 PM
  #1  
pjdavis12345's Avatar
pjdavis12345
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Sounds like...... a 747?

89 150 5.0 5sp 4wd

So I am having multiple issues with a truck i have bought. I will start with the strangest one first. At idle, after 1-2 mins of warmup, it makes a sound like a turbo winding up at first, then it quits. Each time it quits, the idle drops 4-500 rpm. Sound appears to originate from the tranny area. If it was an auto, I was suppose torque converter......
 

Last edited by pjdavis12345; Jul 5, 2015 at 05:13 PM. Reason: needed to add text
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Old Jul 6, 2015 | 12:37 AM
  #2  
ChefJeff1's Avatar
ChefJeff1
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Could it be the fan clutch engaging?
 
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Old Jul 6, 2015 | 07:54 PM
  #3  
Roger T. Pipe's Avatar
Roger T. Pipe
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From: Sandy Hook, CT
+1 on the fan clutch. Sounds like it's working as it's supposed to be.......
 
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