it sends reding to the computer. like the presure of the tranny fluid and the computer tells the tranny when to shift . befor 93 they used a cabel hooked to the throtel linkage to do the same thing.
under the glove box or in that general area. if you replace, don`t forget to switch the prom from the old one to the new one. there are two screws that will let you acess it.
The vacum actuator is located under the battery tray on the passanger side. You must remove the battery, then unbolt the battery tray and remove it. The actuator is right there. This is, in my...