I have a 2001 dodge ram 1500 and it was in a rollover. The driveshaft was dented, and I changed that out today, but it grinds like a cracked wheel at 70-75 going 2K rpm. All of the wheels are fine, I checked that before anything. But I’m lost and have no clue what to look at.

 

Can you tell please us more details about the rollover that may be helpful in diagnosing your issue?

Also, is your driveshaft possibly rubbing against the heat shield on the gas tank? Any wheel bearings possibly hurt from the rollover or are you low on fluid/oil in the differential or transmission?

 

I replaced the transmission after we got it, driveshaft wasn’t bent or anything it just had dents. I put 2 wheel bearings from a scrapyard on but I don’t think it’s that? They looked relatively new. I had to change the yokes on the differential and it leaked a little fluid, I don’t think it would make it do that though. Other than the transmission, the rollover was just cosmetic issues.

 

Have you tried to put the truck on a lift, raising it up in the air with someone in the driver's seat to put the truck in gear and run it to see if the noise can be produced while someone else is looking under the truck for the noise?

 

I’ll try that tomorrow.

 

Was the replacement the same length? Was it made or was it from another vehicle? Why did you change the yoke? Lot of missing info here.

 

Rear diff? How exactly did you do this? Did you check pinion bearing preload?

 

Did you change the u-joints? There is a center bearing carrier too. Axle bent, JY bearings, bent pinion, chipped pinion/ring gear, cracked carrier, tires running straight or wobble, axle shaft bent or stripped, driveshaft/ pinion yolk out of phase. Like said before throw it up on jack stands and locate problem area. Don't put any human parts by rotating mass, it won't stop but it will tear body parts off.

 

I changed the yoke, and the U joints. Torqued the nut to the yoke.

 

Torqued to what? Those nuts take some stupid amount of torque.....