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Old Jul 31, 2009 | 12:09 PM
  #1  
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fordbroncodave
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grinding noise

when i am on a hill, facing down, and i try to drive the truck in reverse up the hill, it makes a loud *** grinding noise just as i hit the gas a little. its really loud because the windows were up and the stereo was on

it occasionally makes the same grinding noise when i am driving forward on a bumpy road.

my initial thoughts were the tie rod ends were lazy and pushing the brake shields into the rotors but when i was on the hill, that was not true because i wasn't moving when it made that loud grinding noise.

does it have anything to do with the motor twisting a little when load is applied to it? i was jumping on the front bumper with the engine on and i couldn't get it to grind.

1989 bronco fulsize xlt 5.0 AOD trans, borg warner case, 8.8 rear and 44 front 31' tires
 
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Old Jul 31, 2009 | 03:55 PM
  #2  
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b4hntn
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Have you looked to see if the fan is hitting the shroud?
 
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Old Jul 31, 2009 | 05:52 PM
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fordbroncodave
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its not that noise. i spin freely with a little resistance.

it sounds like metal on metal so similar to the noise of the brake shield against a turning rotor.

i am afraid what ever this noise is, is creating sparks when it grinds. not a good situation.

i have been under it and shook anything i can get to move loose and nothing is grinding.

could it be the starter bendix not retracting all the way? could the flywheel be loose?
 
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Old Jul 31, 2009 | 05:52 PM
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fordbroncodave
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its not that noise. i spin freely with a little resistance.

it sounds like metal on metal so similar to the noise of the brake shield against a turning rotor.

i am afraid what ever this noise is, is creating sparks when it grinds. not a good situation.

i have been under it and shook anything i can get to move loose and nothing is grinding.

could it be the starter bendix not retracting all the way? could the flywheel be loose?
 
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