I Have a 98 F150 Xlt, 4.6L, Automatic. Now the problem is that it always makes this weird noise whenever i drive it. It sounds like the noise you get when you drive in reverse. Its a higher pitch noise. I was wondering if any one has had the same problem or knows what it could be. Any help would be greatly Appreciated, thanks.

 

Can you hear it all the time or only when decelerating? Do you have a 4x4?

 

My 98 XLT 4.6 auto make that sound also, 1 mech. said it is the bearing in the belt idler, another said it is the fan clutch, im lost !!!. Do these trannies start to whine?? My noise is most noticeable at idle in gear or in park. No problem with performence now but is this a sign??? Thanks.