Rear end squealing problem
Thread Starter
Junior Member
Joined: Sep 2012
Posts: 4
Likes: 0
Rear end squealing problem
Okay, I have a f150 xlt. V6, 4.2L 5-speed 4x4. When i start it up and start moving around 1500 RPMs it starts squealing. It only squeals if i press on the gas or break on around 1500 RPM (give or take 500 RPM). It doesn't squeal when i press the clutch in at 1500 RPM and it's not the pressing of the breaks that do it. and the emergency brake is off It is coming from my rear end somewhere. The rear differential oil is full, i replaced it last year and double checked it. I have stock wheels.Could it be the driveshaft in some way either being a bearing or gasket or seal or something. Please help 
Senior Member
Joined: Apr 2013
Posts: 147
Likes: 16
From: near Portland Oregon
Chock the front wheels and jack up the rear end. Place safety stands under the axle tubes. Now, have an assistant start the engine and put the truck in gear. If the squeal is coming from the area near either of the rear hubs, you have a bad axle bearing (outer bearing) that will need replacement asap.
Listen to both sides since they usually require replacement at the same time.
Listen to both sides since they usually require replacement at the same time.