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Old 01-14-2013, 01:32 PM
seancrawford's Avatar
seancrawford seancrawford is offline
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Join Date: Nov 2012
Location: Indiana
Age: 19
Posts: 11
Gender: Male
Vehicle: 1998 Dodge Ram
Trim Level: SS/T
Color: Red with Silver Strips
Engine: 1998-2001 360ci (5.9L) Magnum V8 245hp(standard), 250hp(Sport package)
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Default Rear Diff Problems! Help!

Alright so I have a 1998 Dodge Ram 1500 SS/T. It is stock from factory other than exhaust. I traded my dad a 95 Corvette for it when I started driving. It has 158,000 on it and it has no problems other then body. Engine is well taken care its been driven nicely all its life except for some back road raceing and my wreck last year. For the past 4 years or so its been making this terrible whine from the rear. At first we thought it was the new tires on the rear then I thought it may be a bearing in the tranny but I honestly think its a bearing in the rear end, Im not sure which one. Ive had some of my buddys ride with me and they say its the rear pinion bearing. I have replaced the U-joints on the drive shaft which didnt help at all so those are out of the picture. I tried to move the drive shaft around to see if it was the pinion but I couldnt really get it to wiggle back and forth or side to side at all it seemed soild. I drive it daily and put anywhere from 100-250 miles on it each week. It is the 9.25 rear end which ive read this is a common problem but I want to fix this right. Now I have the money to drain the rear end and check it out but this will be the first time ive worked on a rear end and im not sure what to look for. Ive read online articles on how to rebuild rear ends step by step but ive never found a site to narrow down to the cause of the whine. It is barely noticeable when going under 20mph but the faster you go the louder it gets. It is more of a high pitch hum then anything and it will quite down a little when you let of the gas and the tranny dis-engauges but it turns into a almost roar like gride sound when you slow down to 20 while braking if you are off the gas. What should I do to figure out what is wrong? I will not take it into a shop and waste all my money I am more then willing to do it myself im 17 with nothing to do other then school and work and I have been working on vehicals with my grandpa all my life and currently work at cummins so I have acess to every tool needed. Any info, input or advice would be awesome! My truck has shown no difference in performance since the whine started, still spins tires tranny never slips nothing it just whines constanly and is imbarising if you ask me. If you know about this feild of work comment give me your two cents, the sooner the better!
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1998 Dodge Ram 1500 SS/T
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