My quest to find the rattle/chatter.....

Alright,

As much as it pains me to do this I'm out of things to think of at this point. As the title says I'm still hunting down the chatter sound in my truck. It is random but if I hit a bump it will come and go and you can definitely hear it even in the cab at 60mph. There is no speed it comes on at or when you turn left to right. All the pulleys, belts, timing components are new to include the water pump and the fan bracket pulley. The only thing on the front of the engine that has not been changed out is the fan and the fan clutch.

This last Thursday I had it on a lift and took the front wheels off thinking that maybe the pin that hold the CV axle nut/ nuts had come off and it was rattleing around in there. Nope all is good and snug as a bug. It is defiantly in the front half of the truck and that is clear as day. I have to be at speed going down the road for it to come out also. I tried just rev. the engine and nothing ever came up. I wish I had an all wheel drive dyno to put it on and run it at 70 MPH so I can find this SOB.

I found a few things loos and fixed all that this last go around and still no luck. I thought it might be my transfer case low on fluid, Nope all good ( Although I did find out that I need a front and rear seal for it, I now have the OE seals in hand)

The only other thing that I have found loose is simple. The hood latch has a broken bolt on the left hole. I need to tap and dye that thing out. Any one what size I will need for that one? Any help at this point wold be welcomed.

PS- I have also checked for rocks in the skid plates. All good on that one too.

Blue

 

No,

I'm still looking. It sucks because I'm just out of ideas. I'm at the point I'm going to pull the CV's and look at them next. After that I'm going to go after the Trans. I hate to even think that but it is just not going away.

Blue

 

Exhaust heat shields? One of my bolts rusted off and it would vibrate on bumps at speed.

 

Now that's a pretty good idea. I know I have an exhaust rattle every once and a while on a big bump but I did my own exhaust so it probably has more flex than the stocker. Exhaust noise could radiate up to the front and seem like it's coming from there too. Also could be right below the exhaust manifold.

 

Nope checked that too. I changed out the stock to a Flowmaster Supper 44.

Blue

 

Heat shield back behind the engine

 

Interesting. Tell me more or even picture would help.

Blue

 

I really can't get no picture because it's behind the motor but if you look back behind that motor against the firewall you will see it. Sometimes one of the corners bolts rust off and that will cause a rattle at a high rpm range.

 

Ok, I'll look into this..

 

Update...

After I did a anglinment. The adjustment nuts were loose on the control arms. Since I have not heard the rattle. We will see what happens I still need to replace one more because it just is not working as it should.

Blue