So when im doing about 60 or so on the interstate, when i start cruising or slowing down or sometimes at a steady speed, i hear a rattle coming from behind me, its a kind of aggressive rattle, it kinda sounds like its under the back of the truck. But i cant hear it when i roll down the windows cause the wind isnso strong at 60 mph, any ideas
97 f150 4.6 v8

 

It could be a loose brake shoe.

 

Heat shield on the exhaust system? It could be anything.

 

You are just going to have to get under the truck and give it a good inspection. Might not be hard to find the loose part.

 

Thats what im thinking but it stumps me that it only does it on interstate speeds and only when im cruising or slowing down, ALSO does it alot more when im going downhill

 

I need help

 

Yes you do. With all the issues you are describing in multiple threads, you need to take your truck to a good mechanic that knows Fords. Nothing more any of us can really do without actually seeing the truck and getting our hands on it.

 

If only i could afford it, i mean none of this affects preformance, just the sounds it makes are annoying

 

Can you take a video and post it of your problems? That can assist a lot better than words.

 

Give me a few hours and ill get on it

 

Great... thank you.

 

Im only able to attach pictures

 

You need to put them on YouTube and link to them.

 

https://youtu.be/eIWo4QjlinM

in the background you can hear faint rattling or air sound leak coming from the dash

 

I cant get the rattle to pick up on camera though