Vacuum Modulator c6 (Diaphragm) - Diesel Forum

VTRedSled · 01-23-2008, 01:20 PM

Does anybody have a P/N or know where I can buy a new vacuum modulator? To clarify, this is the one on the tranny, not the VRV near the engine.

I tried autozone, but no luck. Is this a dealer item only?

Thank you.

cdnsarguy · 01-23-2008, 01:24 PM

Do you have the color of the band around it....... NAPA 5 hits .........or Ford

ltaylor · 01-23-2008, 01:28 PM

try here C6 vacuum modulator,Ford C6 transmission modulator They list two options. Don't know if it will work for ya or not.

VTRedSled · 01-23-2008, 01:56 PM

Thanks guys.
I'll have to check when I get home, but I don't recall noticing a color. Is there any other way to distinguish between them?

netzgeist · 01-23-2008, 04:39 PM

I replaced mine about a year ago...got the part from the local AutoZone. Part number MV208. Autozone's website still shows the part is available. Just go on their website (AutoZone.com - Get in the Zone!) and do a product search for MV208.

94_turbo · 01-23-2008, 09:11 PM

blue,green,orange,brown,or yellow band--around the dia---

VTRedSled · 01-24-2008, 02:14 PM

Thanks for the help. It was barely visible, but I have a green stripe. My local Napa had a replacement. The guy there said the different colored stripes indicate different **** points. If this is so, could you use whichever modulator gave you the shift points you want?

I'm more concerned about getting it to shift than I am about the shift points, but was just curious.

dosdedojack · 01-24-2008, 02:26 PM

Not sure about your **** point, but look for an aftermarket modulator that is adjustable. There is a small screw accesible through the vacuum connection that you can adjust for different levels of engine vacuum. This is very handy for engines running hotter cams etc. Try any good performance or tranny shop. Hope the modulator is your problem...

Kevooo · 01-25-2008, 10:53 PM

Quote:

Originally Posted by VTRedSled

Does anybody have a P/N or know where I can buy a new vacuum modulator? To clarify, this is the one on the tranny, not the VRV near the engine.

I tried autozone, but no luck. Is this a dealer item only?

Thank you.

The BLACK stripe is for diesels. You should be able to find it at the dealer or any tranny shop. Kevin

VTRedSled · 01-26-2008, 01:21 PM

Quote:

Originally Posted by Kevooo

The BLACK stripe is for diesels. You should be able to find it at the dealer or any tranny shop. Kevin

I already installed the green one and it's shifting now. Will this cause problems?

cdnsarguy · 01-26-2008, 03:41 PM

Are the shifts at the same speed, intensity as before from what you can remember....

There a re 2 types of vacuum diaphrams HAD high altitude, SAD single altitude

SAD's have green, black and purple stripes.......

The Throttle valve rods have different colors too........

Purple Daub
Yellow "
Blue "
Green "
White "
Brown "

So matching perfectly would be a wise choice if possible.........

VTRedSled · 01-28-2008, 10:50 AM

Quote:

Originally Posted by cdnsarguy

Are the shifts at the same speed, intensity as before from what you can remember....

It seems about the same, but it's been a while since I have driven it. What is the "throttle valve rod", the rod inside the modulator?
Thanks,

cdnsarguy · 01-28-2008, 12:32 PM

That is what we think...my info was from the manual ..

VTRedSled · 01-28-2008, 05:00 PM

Quote:

Originally Posted by cdnsarguy

That is what we think...my info was from the manual ..

Thank you. I'll pull it out and check when I get home.