[pisspodpete]

imported post

87 Appy. Accelerate 1st gear OK, shift to second vibration when giving more throttle. Close throttle then resume more throttle, no more vibration. The same thru all gears. Engine not lugging. Shifting at about 3000 rpm. Somewhere someone said it is the cluth pack. Any truth there?

Thanks

 

[englishted]

imported post

I'd say weak coutch springs or a cracked diaphram, that's why the vibes go away on the second throttle.

 

[axelwik]

imported post

Before you go digging into the clutch, wait until you get to 4000 RPM before you shift. 3000 RPM is too low to shift and is lugging the engine.