questions got a dodge ram 3500.. stumped

[chris2low]

ik this is a ranger fourum but i figured it was a problem i needed to know that yall could help ,

have a 1996 dodge ram 3500 15 passanger van, and there is a roaring coming from the rear end ,,almost as if the rotors were scraping aginst the brake pads but the pads are newish and when stepped onthe brake it doesnt increase nor stop ,until vehicle is completley stopped.. could it be the transmission is roaring and sendign the vibrations to rear and making the sound loud in rear since it is more hollow space in the van,, im stummped ,, everything has been replaced and still cant figure , so im thinking tranny and how might i fix that to stop the roaring ,

thanx yall

 

[adsm08]

Does it change from accel/cruise to coasting?

It may be the rear.

 

[straycat]

When was it last serviced? Ever in deep water (roads flooded, etc.)?

 

[mudhog1977]

My f150 does the same thing and its my pinion bearing

Sent from my MB525 using Tapatalk

 

[racsan]

pop the diff cover and check your gears/bearings over. compare how much oil drains out against what should be in there. if its low you might get lucky and a fresh fill cure it. then again if its low, its low for a reason, you may want to keep a eye on all the seals after re-filling. my wife's S-blazer was low on fron diff oil when we got it, after filling it it ran out the l.f. axle seal when driving. it had been so low for so long there was no indication that there was a seal problem. aside from a rear axle problem, sometimes ive seen overdrive transmissions that werent going into overdrive, the motor was running faster at highway speeds than it used to be, without a onboard tach it wasnt evident that overdrive was "missing". motor did seem to be roaring, but only above 50 mph.

 

[85_Ranger4x4]

My parents Explorer had a drone/roar under a load, it was the flex part of the driveshaft.

 

[chris2low]

thank you guys , i was thinking it could be the pinion bearing , but we had new diff oil / grease put in as we had it serviced not but 3,000 miles ago .. im etheir suspecting and going with its a tranny roar or it is the pinion bearing , what is the tech difficult level on a pinion bering .. any pullers needed , and how do i know if its shot ?

also the driveshaft flex part are you reffering to the u joint or pivitol poit by the splines ?

 

[naford]

I'm not telling you do this but many years ago we had a 70 something Dodge van that had a nosie in the rear. I pumped in STP and that quieted down the noise. I was thinking it might be teeth missing in the rear end.

 

[Will]

Axle bearings roar. On my honeymoon in Glacier National Park pulling a U-Haul with my '64 Ford, I had that exact experience. That was one hell of a bad day.

 

[holyford86]

Had the same kind of issue on a 01 ford E350 with a D70 Full floating axle, Turned out the pinion seal let water in, causing rust on the front pinion bearing and made it howl, the only time the howling would stop was when you were under 5mph. I'd assume that your 3500 dodge has a D60 FF axle so it's probably similar, something to think about.