Saw dust in the rear differential. Filled up the slack in the gears. Thats what I heard.

wareagle said:

Checked my motor mounts tonight and the bolts were tight.

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Hi Steven - does your truck have a two piece driveshaft - if it does there will be a centre bearing bolted to a chassis crossmember which you could check out - if its bad you should also be able to hear a rumbling sound while driving at a moderate speed.
I would continue back down the drivetrain checking the universal joints , shackle bushes, - anything that could be loose etc.

Cheers Mark

kiwi f150 said:

Hi Steven - does your truck have a two piece driveshaft - if it does there will be a centre bearing bolted to a chassis crossmember which you could check out - if its bad you should also be able to hear a rumbling sound while driving at a moderate speed.
I would continue back down the drivetrain checking the universal joints , shackle bushes, - anything that could be loose etc.

Cheers Mark

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Will check that out Mark. Thank you again to you and everyone for their advice.

D9TZ-4800-A .. Driveshaft Center Support Kit / Available from Ford.

Applications: 1961/79 F100/250 / 1975/79 F150 / Misc 1980/89 F100/250's.

Kit includes the bearing, U shaped rubber support and bracket, shims.

MSRP: $96.83 // PARTSGUYED.COM price: $69.72.

BKW said:

D9TZ-4800-A .. Driveshaft Center Support Kit / Available from Ford.

Applications: 1961/79 F100/250 / 1975/79 F150 / Misc 1980/89 F100/250's.

Kit includes the bearing, U shaped rubber support and bracket, shims.

MSRP: $96.83 // PARTSGUYED.COM price: $69.72.

Click to expand...

Thanks Bill.