I have a 2000 Ranger XLT 4x4. Shortly after I hauled an engine in the back of my truck, I started to hear a rattle / clanging sound coming out from beneath my truck. It tends to be the loudest in between 25 - 30 mph (also the speed range that my mud tires tend to resonate.... related issues?). It sounds like a somewhat long (6" - 12" ??) peice of sheetmetal or metal tubing. I have been under the truck multiple times trying to find something loose with no luck. IT IS DRIVING ME NUTS!!!! Does anyone have any suggestions on what it might be or how to find the rattle??

 

The only logical thing to do is what they did in "Speed". Get on a little cart thing and lay under your truck while a friend drives it at 25-30 mph.

 

Catalytic converter heat shield?

 

Yeah most likely a heat shield. Does your truck have the shield around the gas tank.

 

^^^X2
Check the heat shield on the cat. I rewelded the one on my '90 Ranger 3-4 times before I just got pissed and just pryed the thing off.

 

I will check the heat sheilds. Nope, no carrier bearings.

 

Yup...my guess is that the heat shields as rattling...either cataladic converters, gastank, or the one above the stock muffler.

BTW.....AWESOME Kaiser by the way....love those things. I want to put a twin turbo Cummins in one. Sorry about the thread hack.

 

I have a Ford 390 and NP435 that will go in once they are rebuilt. I am guessing about 375 hp and 450 lb-ft when I finish the 390.

 

That may be whats wrong with mine......would that be on a 2wd as well?

 

I agree