ZJ: DEAFENING bearing noise, but only on accel! help! - JeepForum.com

 
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post #1 of 8 Old 04-01-2009, 08:05 AM Thread Starter
aaron7
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ZJ: DEAFENING bearing noise, but only on accel! help!

Ok. This one has me stumped.

I have a noise coming from the front end that sounds kinda like a wheel bearing... but it isn't; as I replaced both.

On the highway the sound is literally deafening. I can't hear the engine, wind noise, or my passengers.

Here's the weird part... the sound is only when I'm on the gas or braking. If I coast... it's silent!

WHAT IS IT??? I can't take it much longer!!


89 MR2 MK1.5
74 CB360
83 Firebird
79 Dodge Shasta 22' RV
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post #2 of 8 Old 04-01-2009, 10:13 AM
Eldoradoman
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Quote:
Originally Posted by aaron7 View Post
Ok. This one has me stumped.

I have a noise coming from the front end that sounds kinda like a wheel bearing... but it isn't; as I replaced both.

On the highway the sound is literally deafening. I can't hear the engine, wind noise, or my passengers.

Here's the weird part... the sound is only when I'm on the gas or braking. If I coast... it's silent!

WHAT IS IT??? I can't take it much longer!!
Check the diff fluid level, front & rear, plus the transfer case.

1998 Bright Platinum 5.9, 242 swap, go-fast goodies ,and 3" exhaust w/Super 40, SCT Tuner, 4" hybrid lift, 33" Claw TTC Radials
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post #3 of 8 Old 04-01-2009, 10:14 AM
chris_nm1
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Do you have a vibe with the noise? If so it is the same problem many of us here are experiencing. I just rebuilt my front diff this past weekend and it still did not take care of the problem.

98' Grandcherokee Laredo 5.2L bored .30over.
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post #4 of 8 Old 04-01-2009, 10:29 AM
tirus89
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Sounds like the pinion bearing. I got the same deal, except the breaking part.

//
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post #5 of 8 Old 04-01-2009, 11:53 AM
eshew
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Yeah when my pinion bearing went out it was loud as hell. I think I spent about $400 fixing it. If you have a U-pull it nearby you may want to look into swapping out for a used front axle, could be cheaper in the long run... or now might be a good time to regear since you basically are going through the cost of gear setup in the front.
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post #6 of 8 Old 04-01-2009, 12:47 PM Thread Starter
aaron7
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Ok, that's what I thought.

Time to put the HP D30 in there I guess haha

89 MR2 MK1.5
74 CB360
83 Firebird
79 Dodge Shasta 22' RV
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post #7 of 8 Old 04-02-2009, 04:22 PM Thread Starter
aaron7
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Took this pic today while removing my driveshaft.

Who can spot why my bearing failed? Anyone?


89 MR2 MK1.5
74 CB360
83 Firebird
79 Dodge Shasta 22' RV
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post #8 of 8 Old 04-02-2009, 04:26 PM
Virmagicus
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Quote:
Originally Posted by aaron7 View Post

Who can spot why my bearing failed? Anyone?


Do we have to ?
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