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| 12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps |
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Whe im on the freeway just drivin and let off the throttle my truck will almost make this grinding sound. i cant figure it out cause it only does it on the freeway and not around town. does anybody have any advise on the situation.... JOIN NOW TO REMOVE TRACER
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#1
02-26-2009, 09:01 PM
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Got a wierd noise.
Whe im on the freeway just drivin and let off the throttle my truck will almost make this grinding sound. i cant figure it out cause it only does it on the freeway and not around town. does anybody have any advise on the situation.
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#2
02-26-2009, 09:41 PM
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easy to fix.......never let off the throttle
 you need to determine if its comming from the motor, tranny of drivetrain......................try messing with it letting off and popping it into nutral and stuff like that
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#3
02-26-2009, 09:53 PM
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It only happens when i let off the throttle once im not on the throttle the noise goes away. it occurs when im barely pushin on the throttle to.
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#4
02-26-2009, 10:00 PM
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sounds like to me U-joints...............check yer drivelines out good and both front axles.....jack the truck up one wheel at a time
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#5
02-26-2009, 11:41 PM
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that sounds like u joints to me most likely rear drive shaft. your 8 inches of lift probably dont help matters
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#6
02-27-2009, 01:30 AM
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i know exactly what it is from first had experiance with that exact truck
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#7
02-27-2009, 07:21 PM
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Then if you know what it is please tell me cause all of my u joints are fine checked them today at work. and the wheel bearings seem to be ok.
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#8
02-27-2009, 08:07 PM
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what about the carrier bearing?
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#10
02-28-2009, 12:31 AM
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remem ber when your rear end went out? when you let off the throttle it did it to, its changing pinion angles from axle wrap, same thing that happened when i rebuilt your rear end, look at youru-bolts to see if there tight
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| The Following User Says Thank You to 94cummins12v For This Useful Post: | ||
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#11
02-28-2009, 09:11 AM
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ring gear or transfer case chain. sounds like its riding on the backside of the gear when the load is off the driveline. does it happen at any speed or only in lockup.
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#12
02-28-2009, 11:27 AM
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My u bolts are fine but yesterday when i took the plug out of my rear diff there will metal shaving on it but not much so i will pull it off today and look at it then let you guys know. thanks for the help
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#13
03-01-2009, 12:27 PM
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Well found out the problem. the pinion nut was loose and the pinion was movin around and f'd the bearing. the nut was not torqued to spec so over time it just walked off.
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#14
03-01-2009, 02:03 PM
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every bolt and nut was torqued to spec
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#15
03-01-2009, 09:22 PM
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no it wasnt. cuase that baby was loose.
---AutoMerged DoublePost--- yep it was the pinion bearing but there was also one to many shims on it to. we took .021 off. mow it runs and sounds great. Last edited by farm boy; 03-01-2009 at 09:22 PM.. Reason: Automerged Doublepost
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