ramdodge

i have a 99 dodge 4x4 quad cab and the front passenger seal went out i
changed that but at the same time i started getting noise coming from the
front i have good steering no vibrations and good brakes but the noise
comes and goes going down the road if i put it in 4 wheel drive it quits
and am also able to put in 4 wheel without putting it in neutral it all
started with the seal leaking could dirt of gotten in vacuum line or
canister? please help