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Old Jun 23, 2017 | 06:11 PM
  #1  
Britt Jones's Avatar
Britt Jones
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Exclamation Help!?!

Help. Have only had my 91 bronco for a few months and just last week it started making a loud humming/engine revving (kinda sounds like a crotch rocket) when I'm decelerating and not pushing the gas pedal. Once my rpm hit 1000 it starts this but doesn't move up or down unless I push the gas pedal. I have checked fluids (tranny fluid is full while engine is warm and red) 4wd is off and cruise control is off.
 
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Old Jun 24, 2017 | 06:37 AM
  #2  
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schwim
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Hi there, Britt!

It could very well be a bearing going out(wheel, yoke). That would be my first guess when dealing with as little info as this.

Mods: could we maybe change the topic title to something a bit more explanatory so Britt can get a better chance at some help?
 
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Old Jun 29, 2017 | 03:54 PM
  #3  
varminthunter243's Avatar
varminthunter243
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From: Bloomfield, NM
Originally Posted by Britt Jones
Help. Have only had my 91 bronco for a few months and just last week it started making a loud humming/engine revving (kinda sounds like a crotch rocket) when I'm decelerating and not pushing the gas pedal. Once my rpm hit 1000 it starts this but doesn't move up or down unless I push the gas pedal. I have checked fluids (tranny fluid is full while engine is warm and red) 4wd is off and cruise control is off.
I would take a hard look at the rear end. My 78 makes a similar noise. It started after I had to rebuild the rear end after I blew it up doing a burn out. Yes, stupid, but I know better now haha my gear as that I didn't get the gears set correctly. After I get it running again, that will be on the list of things to fix
 
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