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Noise when going up hill

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Old Mar 23, 2011 | 10:15 PM
  #11  
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BWhelan
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So I tested out my theory and it seems to be the case.

When I'm going up hill and just cruise, it will shift into third and at the low rps 1-1.5k it will make the noise.

At first I thought it was coming from the back of the truck by now the g/f thinks its coming from the front.

With that being said, I've put it into "Tow" and it doesn't seem to make the sound then.
 
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Old Mar 25, 2011 | 07:01 AM
  #12  
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poor fuel + heavy engine load = pre-detonation maybe?
 
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