I see Bill asked this but don't see an answer. Can you easily repeat the occurance. For example every time you give it more than 50% throttle from a stop you get the thumping??? if so what are the exact conditions that it occurs at. This is very useful info in diagnosing the problem...
__________________
DJ Phoenix (my modded) Hi-1200/240Tow/75FS/80DD/100/140SS +Minotaur
ASE Master Auto Technician 
2001 Ford Excursion 7.3 4x4
Projects. 1970's Hustler and Max II Amphibious ATV's
|