Vacuum question......again problems

[BIGRED]

I have a 300TD. I ahve been through the vaccum system soooo many times, I proably hold the speed record of removing door panels and replacing them.

After about 10 minutes the vacuum drains and the remote door locks don't operate.

The following is what I have done.

First I disconnect green-yellow from the circuit (climate control) because that whole system needs lots of work.

I am feeding the brown (ignition), yellow (door locks) and black-yellow (storage tank) from a 4-way connector. When I tap into this group and check vacuum it holds. This shouild mean the the ignition switch, ignition shut down valve, all door related vacuum components and the storage tank are ok.

The line that feed to the transmission and up to the micro swiches on the valve cover also hold vacuum. This should mean the modulator, the micro switches and the leak valve are ok.

When checking the main vacum line from each of the two vacuum connectors it holds vacuum. This should mean the pump, the line and the booster are ok.


Am I missing / overlooking something?

Thanks for any input.

Don