Quote:
Originally Posted by vstech
the brake line is isolated from vacuum leaks in the small stuff... only way you'd lose brake vacuum is if you broke the main vacuum line, or the pump is defective...
I do not like the way you have the vacuum connected and flowing through the vcv correctly.
Post up pics for others to critique, and lets fix the problem.
|
I'll get some pics tomorrow.
I'm quite sure however that I've got things set up properly. If you look at this detail from the full vacuum diagram for the '85 617 Cali version, the side connector to the VCV for the transmission clearly just vents to atmosphere - I should have it plumbed to the cabin, but it is just a vent line.
Below is the full vacuum diagram.
The vacuum source for the VCV is the "front" port on the check valve (140) and runs through orifice 63 or 63a depending on whether the vacuum transducer (125) is active or not and through the green vacuum damper (72) to the VCV.
One thing that I should point out on my configuration is that the '85 671.952 is mated to a 722.4x transmission. When my tranny went out, I replaced it with a 722.3x from an 83 but left the blue flying saucer Vacuum Transducer (123) in place. The transmission has worked perfectly with this configuration even thought that's not what is technically called for.
I think what you're getting confused is the '83 that has a Y-connector with one end going to vent and the other to the 3-2 valve. It's still just a vent. And the Vacuum Control Valve connects directly to the transmission, rather than going through the Vacuum Transducer (blue flying saucer device).
'83 Vacuum Setup
Hope this helps clarify my unique situation.
The system has worked for some 25k miles, so I'm a little reluctant to think it's the setup that's wrong... but, that's why I'm asking.