Where is this noise coming from?

i had the same problem and after all the driveline repair was said and done we figured out it was the catalitic converter when we drove low it just echoed against the road i guess but none the less i replaced and no more noise..hope this helps

I also have this problem, but i narrowed the problem down to my exhaust hittin a cross member, I'm just gonna brace the exhaust this winter

well its not the exhaust cuz you can feel the noise lol in the peddle kinda like a vibration but a grinding and rubbing noise all at the same time...remeber tho it only does it when im low

you guys need to check your Pinion angles. I always set them to where the driveshaft and pinion are in a straight line at ride heigth. don't get to caught up on the angle. The driveshaft and pinion should be in the straightest line possible through out the range of travel.

Hotwheelsgt, try raising you carrier bearing up an inch or so. It could also be that your driveshaft is pulling out to far out when down and almost falling out. It makes no sense that your driveshaft would be pulling out when layed out. It should be pushed in when laid out or locked up. somewhere in the middle should be the farthest out.

ive always heard that the pinion angle should be from 1 - 4 degrees..my carrier bearing is in a good spot but ill look at it again tomorrow...your drive shaft would be pulling out if you had a suicide 4 link like just think about it...when your bagged off the bas and get over 20 inches of lift the drive shaft on my truck goes in as the axle goes for ward when its lifted...the carrier bearing moves no more than a 1/4 of a inch i would say all the drive shaft pullin and pushing will be done on the slip part of the shaft..axle side of the carrier bearing...i think the drive shaft is petty close to straight at rode height tho..witch was setup to be 8 inches at the frame..

u-joints will take about 3 degrees of movement from being perfectly alligned. You can't just take the angle of pinion into account. Your drivshaft also affects this. having a carrier bearing means you have a shorter driveshaft and the driveshaft angle changes a lot more then a longer one. Just allign the driveshaft to the pinion at ride heigth. If you look at extremely lifted trucks you'll notice the pinion angle is damn near 50 degrees so that the driveshaft goes into it in the straightest line. I always set ride heigth at about 2 inches. I have a 2-link with bag on the bar and get about 16 inches. And i have done SD 4 links with bag on bar getting about 17 inches. It all depends on where your front bar mounts are on the frame. It all goes in an arch off of these points. I have never bagged a ranger nor really looked at one very closely to be to sure on any of it though.

There goes my last post. Gues i'll just have to pay up and upgrade.

before you listen to this fella, goto the suspension forum, and click on the 4 link articles and read them, they give good info on setup of pinion angles....

PINION ANGLE OR A BAD U JOINT

my pinion is 0 laid out and i still get bad vibs.. i think a carrier bearing is going bad.

i didnt think a bad carrier bearing would give a bad vibration other than on the accel or decell.. but i could be mostly wrong lol...1 post left..i wanna find a factory carrier bearing cuz they are way stronger than these over priced worthless pieces o pooo