strange vibrations
 

Any of you out there get a strange rattle or vibration from undernieth your truck when you are in 1st gear and letting out the clutch? Sounds kinda like a loose shield of some sort but everything looks tight

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1999 F150 4x4 XLT BLACK ORP 4.6 5 SPEED 3.55
LUND HOOD SHEILD
K&N
FLOWMASTER SERIES 40
PREMIUM SOUND W/CHANGER
PIONEER 6815's(for now)
SUPERCHIP
AIRBOX MOD

No strange vibrations when lettin clutch out, but the tranny clunks and knocks alot when changing gears (especially in 4th or 5th ) anyone else?

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'99 F-150 XLT 4x4 Reg. Cab, Oxford White, 4.6L V-8, 5-speed, 3.55LS