car shakes when a/c is on

[indep]

hey,
i got a 99 jetta when im driving and the a/c is on for a while the car starts shaking, anyone has an idea what it could be before i take it to a shop

thanks a lot

[Ogpogo]

If its a four-banger, welcome to four-bangers. Low torque plus the increase in belt demand equals the shake.

[arian_ma]

^^ IE: Downshift because your engine is not making enough power at those revs.

[indep]

thanks guys for the help hehe