Daryl
On automatic cars there is a switch on the throttle shaft that is part of the controll system for the electric solenoid on top of the automatic transmission. It is there to reduce the controll pressure for smoother down shifts when stoping.
Don't have any idea why your stick shift car would have one. Mine just has a cover plate where the switch would be mounted.
Al Lieffring
66 230Sl
New blue top just arrived
new gas tank on order
