> RA wrote:
>
> I finally reached the point where the engine will not shut
> off when removing the key last week. I must use the stop
> button under the hood each time. The door locks also
> stopped working.
Classic symptoms of a failing vacuum control system. It could
be lines or hoses - but
he is not getting the 20 psi to restore all functionality.
Atmospheric pressure is less than 15psi. Vacuum is customarily
measured in inches or mm of mercury, not (negative) PSI.
Your guy's being pretty sloppy with his terminology. Perhaps that's
not all that is sloppy?
-- Jim
Yeah what they said. First is to put your mity-vac (HF sells a version
for cheap but a "real" one is not that much anyway) on a hose near the
brake booster where some branch off, and see if you are actually getting
vacuum from the vac pump. The diaphragms tear in them over time and
vacuum
via Mercedes <mercedes@okiebenz.com>
To: Mercedes Discussion List <mercedes@okiebenz.com>
Cc: r...@rhonald.me
Sent: Tuesday, September 1, 2015 12:01 PM
Subject: [MBZ] '85 123 vacuum system
I finally reached the point where the engine will not shut off when
removing the key l
RA writes:
> I am losing confidence in his >ability to properly
>troubleshoot and repair the >system.
>Any thoughts on where else to >look?
Buy a Mity Vac. Do it yourself.
It isn't too terribly difficult to T/S vacuum problems, but it is time
consuming, and much like electrical
I finally reached the point where the engine will not shut off when
removing the key last week. I must use the stop button under the hood
each time. The door locks also stopped working. A mechanic has found
one source in the drivers door and something else under the hood. He
says there is a
This is all of maybe 10-15 minutes worth of diagnostics with a MityVac. It's
vacuum, not pressure, so I'm confused why they would reference a positive
pressure.
If you have access to a MityVac and some time, let me know and I can outline
the steps. It's stupidly simple once you know how.
Dan
