Slipping tranny or rear end ? 2005 F-150 4X4 Lariat Crew Cab


#1

During initial acceleration from a stop, my truck seems to have a slip in the drive train. Especially when accelerating from a stop into a turn.

It seems to slip for a second or two and then catch with a clunck? I had it serviced 8 mos. ago and the dealer charged $450 to “rebuild” the rear end. However, the problem returned very soon.

It continues and they act like they have never heard of the problem. The truck is only 1.5 yrs old and only 22K miles. I have to believe others have had this problem. Please reply.


#2

This sounds like a loss of line pressure in the transmission. I assume you have check that the transmission fluid level is near or at the ‘hot’ level indicator on the dip stick. If so, there may be a problem on the suction side of the transmission pump, either an air leak or loose filter. Have a transmission technician check the line pressure during the turn to see if it is dropping off.

Hope that helps
Researcher


#3

I had a similar problem, and later on the transmission had trouble upshifting and then stopped upshifting. The vehicle was completely different so you may not have the same problem. I do not believe the problem is rear axle related. A limited slip differential can make noises when going bad but I will guess transmission. Not much trans experience.