Re: [MBZ] modulator valve test on W123 AT

2008-08-28 Thread andrew strasfogel
Another example of the value in owning a lift! On Thu, Aug 28, 2008 at 1:48 PM, Alex Chamberlain <[EMAIL PROTECTED]>wrote: > On Thu, Aug 28, 2008 at 6:54 AM, andrew strasfogel > <[EMAIL PROTECTED]> wrote: > > This is the BLACK line that heads toward the firewall and down past the > back > > of t

Re: [MBZ] modulator valve test on W123 AT

2008-08-28 Thread Alex Chamberlain
On Thu, Aug 28, 2008 at 6:54 AM, andrew strasfogel <[EMAIL PROTECTED]> wrote: > This is the BLACK line that heads toward the firewall and down past the back > of the valve cover, disappearing into no man's land... If the modulator will not hold vacuum, it does indeed need to be replaced. To make

Re: [MBZ] modulator valve test on W123 AT

2008-08-28 Thread Rich Thomas
I don't know exactly what is on your car, or exactly what you are referring to (my ignorance), but on the son's 84 SD there are a bunch of vac hoses going into a little box on top of the valve cover. In trying to get the vac working, after rebuilding the pump, I traced a problem to that box.

Re: [MBZ] modulator valve test on W123 AT

2008-08-28 Thread andrew strasfogel
This is the BLACK line that heads toward the firewall and down past the back of the valve cover, disappearing into no man's land... On Thu, Aug 28, 2008 at 9:51 AM, Jim Cathey <[EMAIL PROTECTED]> wrote: > > I ran a vacuum check on the black plastic line > > heading down to the AT modulator valve

Re: [MBZ] modulator valve test on W123 AT

2008-08-28 Thread Jim Cathey
> I ran a vacuum check on the black plastic line > heading down to the AT modulator valve from the vacuum control valve. > Is > this supposed to hold vacuum? Yes. Are you sure you were on the right line? There's also a vent line that goes into the cabin. It's open (on purpose) at the other en

[MBZ] modulator valve test on W123 AT

2008-08-28 Thread andrew strasfogel
My new 1983 300TD turbodiesel consistently clunks when shifting down as I apply brakes. Last night, I ran a vacuum check on the black plastic line heading down to the AT modulator valve from the vacuum control valve. Is this supposed to hold vacuum? The engine was not running when I performed th