1979 F-150, when I hit 38 mph, there is a hum/howling noise from the middle or rear end of the truck. Gets louder as I increase speed. It stops completely when I let off the accelerator or shift into neutral.
have the same problem?
Saturday, November 28th, 2009 AT 4:16 PM
Have you checked the rear differential fluid? Make sure it is full and clean. Also, check for play at the pinion bearing and check u-joints.
Let me know what you find.
Friday, December 4th, 2009 AT 8:14 AM
Fluids are all okay. Just did the initial start-up after the engine swap. Tranny was great when it was parked last Friday, before we tore into the engine.