Greetings,

In order to track down your vac leak, you're gonna need a mighty vac or similar vacuum producing tool. I started under the hood where the vac comes off the power brake booster. There should be several lines coming off from there. IE, one for shut down vac only, one for door locks, one going to climate control. I pulled a vacuum off of each seperately to see which one leaked down to resolve my problem. The tricky one is the shut off vac switch located on the key start. It is a two way valve that releases pressure so you can start up the car, but it then goes to a vac lock situation in the running mode without pulling a vac on the shutoff valve. This little valve can and will leak causing your system to bleed off vacuum while the engine is running, thus keeping your air reservoir from storing a vac for operation of the door locks with the engine turned off.

Good Luck,

Charles