Do you have a stock tranny? I have seen a lot of these trucks exeperence torque converter chatter, you could have a slipping clutch.
Also I had a friends truck that had a slight shutter, and it turned out to be a cracked ring. Un do your oil fill cap while it's runnig and see if it's puffing blow by gasses.
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Jay 413-222-8286 I got hay for sale
'97 F350 CC, DRW, pickup, 7.3, E4OD, 2wd, 4.10, 405K
'00 F550 reg cab, 11' flatbed, 4x4, 7.3, 6637, 4R100 (soon to be a ZF6), 290k
'97 GMC 5500, getting a transplant, 3.36, sleeper, 350k
Abolish the Federal Reserve, They are the #1 problem.
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