iancc
Member
- Joined
- May 12, 2016
- Messages
- 24
- Reaction score
- 2
- City, State
- Tampa, FL
- Year, Model & Trim Level
- 1997 Mercury Mountaineer
I bought this truck used with 160k on it. Other than the interior, it wasn't taken care of well.
The Moaning!!!! Omg is it annoying.
I drained the transfer case, put Valvoline high mileage atf in.
I drained the front differential, put 75w90 semi synthetic in.
I went to drain the rear differential but to my surprise it was bone dry. Looks like it was dry for a while... I put 75w140 full synthetic in and limited slip additive.
Still moaning, sometimes worse than before.
I picked up a duralube friction modifier for atf. Put the directed amount in the transmission, and even some in the transfer case.
Still moaning!!!
I've replaced both front wheel hub & bearing assemblies. New rotors and brakes all the way around. Regressed all the calipers.
Still moaning!!
When I accelerate I can feel it start to vibrate around 30mph. When I get to 50mph or so, and let off the gas, I can hear and feel the moaning and vibration to go with it.
Did I miss something? The rear differential seems to be holding oil well. I got the type of oil right... and it feels more toward the front like the front differential. The oil it was black black black. The transfer case atf was black as well. I know that rear end sounds and vibration can make their way to the front end and make it tricky to diagnose.
What's my next step here guys?
Thanks In advance.
The Moaning!!!! Omg is it annoying.
I drained the transfer case, put Valvoline high mileage atf in.
I drained the front differential, put 75w90 semi synthetic in.
I went to drain the rear differential but to my surprise it was bone dry. Looks like it was dry for a while... I put 75w140 full synthetic in and limited slip additive.
Still moaning, sometimes worse than before.
I picked up a duralube friction modifier for atf. Put the directed amount in the transmission, and even some in the transfer case.
Still moaning!!!
I've replaced both front wheel hub & bearing assemblies. New rotors and brakes all the way around. Regressed all the calipers.
Still moaning!!
When I accelerate I can feel it start to vibrate around 30mph. When I get to 50mph or so, and let off the gas, I can hear and feel the moaning and vibration to go with it.
Did I miss something? The rear differential seems to be holding oil well. I got the type of oil right... and it feels more toward the front like the front differential. The oil it was black black black. The transfer case atf was black as well. I know that rear end sounds and vibration can make their way to the front end and make it tricky to diagnose.
What's my next step here guys?
Thanks In advance.