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I had an Explorer with similar problem (my was noisy all the time) my went around 180,000km
We change converter and oil and there was no more noise
We pick up a used converter from scrap yard from crashed explorer, It was cheaper than overhauling Transmission at Mr.T.
Is your noise coming from converter or diffs
Start up your truck when is nice and warm and double check it
Noise should be there by just putting in gear
(make sure you block your wheels)
I had an Explorer with similar problem (my was noisy all the time) my went around 180,000km
We change converter and oil and there was no more noise
We pick up a used converter from scrap yard from crashed explorer, It was cheaper than overhauling Transmission at Mr.T.
Is your noise coming from converter or diffs
Start up your truck when is nice and warm and double check it
Noise should be there by just putting in gear
(make sure you block your wheels)