I have an 87 300d W124 that shifts nice and tight when the throttle is half or more, but less than half seems a little too soft and slow for my taste.

I'm assuming tilting the vacuum control on the IP towards a higher throttle would do the trick. Am I missing anything?
thanks!
Nick

__________________
-E300d '99 350k
-Suburban '93 220k
-TDI Jetta '03 350k
Sold
-F250 '96 7.3
-Dodge Ram 12V
-E320 '95 200k
-E320 Wagon 1994 155k
-300d Turbo '87 187k miles
-E320 1994 200k
-300d Turbo '84 245k (sold to Dan62)
-300d Turbo '84 180k
-300sd '80 300k
-7.3 Powerstroke Diesel 15P Van 500k+ miles
-190d '89 Non Turbo 2.5 5cyl 240k (my first MB)
Tom's Imports of Columbia MO Ruined the IP in changing leaky delivery valve O-Rings - Refused to stand behind his work. Mid-MO MB drivers-AVOID Tom's.

You cannot adjust the VCV on the 603 without getting into "problems". Although it appears possible, you'll find that you'll get a massive flare.........intermittently. Strange as hell and unexplainable.

What I did accomplish was to adjust the screw on the bottom of the amplifier. You'll need a 4mm socket and you turn the screw fully clockwise to lower the vacuum to the modulator...........slightly.

Yeah I've never messed with the VCV on this car. I have changed one of the original linkage ends. I suppose getting that linkage to the original spec is probably impossible without knowing what I was doing but it seems to drive fine. I'm not sure if this has an effect on the Trans Vacuum system or not. I'd guess it does.

But speaking of flare I get some weird flares when I floor it at times. For now I will adjust the amp and see if I can get some firmer shifting. Thanks for the quick tip Brian!

__________________
-E300d '99 350k
-Suburban '93 220k
-TDI Jetta '03 350k
Sold
-F250 '96 7.3
-Dodge Ram 12V
-E320 '95 200k
-E320 Wagon 1994 155k
-300d Turbo '87 187k miles
-E320 1994 200k
-300d Turbo '84 245k (sold to Dan62)
-300d Turbo '84 180k
-300sd '80 300k
-7.3 Powerstroke Diesel 15P Van 500k+ miles
-190d '89 Non Turbo 2.5 5cyl 240k (my first MB)
Tom's Imports of Columbia MO Ruined the IP in changing leaky delivery valve O-Rings - Refused to stand behind his work. Mid-MO MB drivers-AVOID Tom's.

Brian,

Where is this screw located? I am curious to adjust mine. Thanks

__________________
1987 300SDL 314K mi, counting; #22 Head
1999 E300Turbo 405K original miles
1997 E320 180K mi (Son's)
2002 ML320 (Son's)
1998 S320 140K mi (Son's) sold
1985 300SD 311K mi
1984 300D 324K mi (killed by a hit-n-run turd)
*************************************

Remove the amp.

There is a black cap on the underside. Pry off the cap. The screw (plastic) is beneath the cap. Be careful with it.

by the way... just in case you don't know about this yet, the amp is the purple flying saucer looking thing with vac lines going to and from it. It's mounted on the driver side fender well in the engine compartment.

__________________
-E300d '99 350k
-Suburban '93 220k
-TDI Jetta '03 350k
Sold
-F250 '96 7.3
-Dodge Ram 12V
-E320 '95 200k
-E320 Wagon 1994 155k
-300d Turbo '87 187k miles
-E320 1994 200k
-300d Turbo '84 245k (sold to Dan62)
-300d Turbo '84 180k
-300sd '80 300k
-7.3 Powerstroke Diesel 15P Van 500k+ miles
-190d '89 Non Turbo 2.5 5cyl 240k (my first MB)
Tom's Imports of Columbia MO Ruined the IP in changing leaky delivery valve O-Rings - Refused to stand behind his work. Mid-MO MB drivers-AVOID Tom's.

Go with B C on tranny questions...(until i get around to doing one
..) B. C is THE MAN


there is one (IM) Poster who once told me that TRANS-X would solve my problems. It sure would if it came with a set of parts to replace my failed transmission pump but no bottle does that...

AGREED! Brian Carlton is awesome!

__________________
-E300d '99 350k
-Suburban '93 220k
-TDI Jetta '03 350k
Sold
-F250 '96 7.3
-Dodge Ram 12V
-E320 '95 200k
-E320 Wagon 1994 155k
-300d Turbo '87 187k miles
-E320 1994 200k
-300d Turbo '84 245k (sold to Dan62)
-300d Turbo '84 180k
-300sd '80 300k
-7.3 Powerstroke Diesel 15P Van 500k+ miles
-190d '89 Non Turbo 2.5 5cyl 240k (my first MB)
Tom's Imports of Columbia MO Ruined the IP in changing leaky delivery valve O-Rings - Refused to stand behind his work. Mid-MO MB drivers-AVOID Tom's.

No he is not. he is just an average man...







































with exceptional abilities shhhh you will build his ego up and he will start to delete more of my threads

How so? Just loosen the two screws and twist it to where you want it. Much easier than adjusting the VCV of the pre 85 models.

When it's not adjusted per the FSM, it causes extreme flaring. It's happened to both Dave and myself. Adjust it ad-hoc at your own risk.