Outer Limits 4x4 Board

hi fellas i just noticed a sound this morning when i take off from the lights or what eva it only is for like 2 seconds but its like when you hear wind blowing through a half open window like a slight howling sound kind off its like woowoowoo, then after take off it stops and never comes back untill i take off again. when i take off faster its longer and a little louder.

i juats cleaned out my rear barkes they were full of mud. dont know if i have done somhting there?

car is a bj40 1979 any help would be great

Your windows are down a little bit??
Check all your hoses are connected properly and are tight, other than that I have no idea.

hole in your exhaust/muffler

i would check everything you took off the car and put back on. and your mufflers n shit yeah. if it is a deisel one thing i have learnt with them is don't worry about noises that start... worry about them when they dissapear.

i had a similar noise and after 6 months of chasing and replacing it was the chrome strip around the wind screen had lifted a little and the wind at certain speeds caught it . noises are an arse to find .