xpanmanx
Member
Greetings -- My daily driver is a 2000 Expedition XLT 4x4 4.6L with a new drivetrain problem.
Driving home this evening, I came to a stop before turning left into my subdivision across traffic. While accelerating, my truck when "bang", like it had been barely hit in the right-rear bumper, then went "thump-thump-thump", as if something were stuck in the wheel well. The thumping continued I brought it to a stop and put it in Park with the parking brake pressed.
Upon inspection, I found that the truck had not been hit. So, I put it back into gear to head home. As soon as the truck started moving, more bangs and thumps. I put it in Park and it rolled forward---man, did I hit the parking brake, quick! I tried reverse, and after a foot of movement, more bangs and thumps, and now some crunches that sound like chunky metal in a slowly-rotating garbage disposal.
I put it in neutral, then switched it into 4x4, then 4-Low. No unexpected noises. I returned to AWD, and put it in Drive. The truck pulsated, about once a second, feeling like it was trying to get into gear. I rowed to Reverse, same thing. I was able to row through the forward gears and feather the throttle to get the truck down the street to my driveway. More bangs and thumps, but few crunches.
After parking the truck, a physical inspection shows nothing unusual to my eyes. Driveshafts are nice and tight, no (new) leaks or holes, etc.
Could it be a dead transfer case? A dead transmission?
Driving home this evening, I came to a stop before turning left into my subdivision across traffic. While accelerating, my truck when "bang", like it had been barely hit in the right-rear bumper, then went "thump-thump-thump", as if something were stuck in the wheel well. The thumping continued I brought it to a stop and put it in Park with the parking brake pressed.
Upon inspection, I found that the truck had not been hit. So, I put it back into gear to head home. As soon as the truck started moving, more bangs and thumps. I put it in Park and it rolled forward---man, did I hit the parking brake, quick! I tried reverse, and after a foot of movement, more bangs and thumps, and now some crunches that sound like chunky metal in a slowly-rotating garbage disposal.
I put it in neutral, then switched it into 4x4, then 4-Low. No unexpected noises. I returned to AWD, and put it in Drive. The truck pulsated, about once a second, feeling like it was trying to get into gear. I rowed to Reverse, same thing. I was able to row through the forward gears and feather the throttle to get the truck down the street to my driveway. More bangs and thumps, but few crunches.
After parking the truck, a physical inspection shows nothing unusual to my eyes. Driveshafts are nice and tight, no (new) leaks or holes, etc.
Could it be a dead transfer case? A dead transmission?
