map32887

When shifting at higher RPM's the transmission will squeel when shifting. Is this a big problem or is this just the transmission hitting the thrust plate or what???

venom0000

Shouldn't be too much of a problem. the 4.6 in the new f150 is designed for more torque. Anyways the Allison should be able to handle anything the truck dishes out.

351cmach

What kind of high RPM? Pedal to the metal? Could be your belt squealing!

map32887

Its an automatic, but it only does it if i floor it and then it shifts really hard. It is a really good shift though RPM's don't go down very much and picks up acceleration again really fast. I just don't think it would be the belt cause it only has 6000 miles so far.

Ty

if it does it constantly, take it into ford, better now then when your warranty is up.

map32887

Luckally it dosen't do it constantly it only does it when i'm pushing it really hard. If i drive it like a normal person it drives fine. But yeah I may get it checked next time i get it serviced.

Ty

If you can make it happen, take it into the dealership, and make them hear it and see what they have to say. I have ever herd of any sort of squealing being something that is normal. Get it checked out under waranty before it becomes a problem down the road.

seatosky

Make sure its not your belt. I thought this was the tranny too but it turned out to be the factory belt slipping. Mine did it from brand new. There is a fix posted about this for a belt but I cant remember what its called/part number....srry

map32887

yeah i'll probobly get it looked at when i get my usual service done. When you fixed the belt did it stop? At least it really isn't causing any driving problems that I can tell.

seatosky

Yes when i replaced the belt it solved the problem. Im trying to remember the belt brand. Ill try to find it for you.