[dean_harryman]

in the bug.....exaust is cycled through a "jtube"(the rear exhaust pipes) these j tubes travel through a heater box that surrounds the exhaust j tube....tour fan pushes air through those little tubes in the engine bay...and heat travels through tubes in your can....the rear tube splits off into 2 pipes...one dumps under the rear seat...and one goes into that tube by the bottom of the door....then dumps air by your feet and out the little porst by the windshiels(defrost).....you need to check and make sure the rear tubes that dump under the rear seats are off they have a thing to turn and it blocks the air...and like zen said check your cables......they end up at the back of the heater boxes....near your valve covers.....you will most likely have to remove your rear tires....