1st Gear downshift help mod? vacuum psi idle?
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From: Forethill, Ca Northcal
85 euro w124 300d non turbo black on black......coming soon hx35 turbo intercooler
1st Gear downshift help mod? vacuum psi idle?
First ? is y doesnt my 300e 86 downshift to first reading and found there is a mod to do this.But cant find info on the mod.Somebody please help. when I punch the peadle it downshifts and will squeal the tire threw 1st and second.But when I start out slow it starts in second.
Second is whats the psi vacuum at idle. Trying to find if I have a vacuum leak?
ps sorry my space bar and keyboard broke on laptop
Second is whats the psi vacuum at idle. Trying to find if I have a vacuum leak?
ps sorry my space bar and keyboard broke on laptop
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From: seattle
1990 300ce supercharged and intercooled
Just get a first gear start valve body in a junkyard. The modification on the valve body is a pain. You can pick up a valve body for less than you can get the modification done. You can also do it electrically. Add a switch to the detent solenoid. Or when you are at a stop just move the shifter down into low and while at a stop it will down shift to first. Then just move it back and go.
Vacuum at idle in neutral with no load should be around 12 inch of hg or better.
Vacuum at idle in neutral with no load should be around 12 inch of hg or better.
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From: Connecticut, New Haven
95' AMG SeeThreeSix
Just get a first gear start valve body in a junkyard. The modification on the valve body is a pain. You can pick up a valve body for less than you can get the modification done. You can also do it electrically. Add a switch to the detent solenoid. Or when you are at a stop just move the shifter down into low and while at a stop it will down shift to first. Then just move it back and go.
Vacuum at idle in neutral with no load should be around 12 inch of hg or better.
Vacuum at idle in neutral with no load should be around 12 inch of hg or better.
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From: Kirkland, WA
500E Signal Rot
The later model W124's started in 1st gear by default. I am not sure exactly when the W124 received this though, on the W201 it was 1992 and I have verified that the 1992/1993 300e's start in first gear, just not sure if the 1991 or 1990 models did.
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From: Forethill, Ca Northcal
85 euro w124 300d non turbo black on black......coming soon hx35 turbo intercooler
That does make sense. now when you say first gear valve body you talking about the vacuum modulator?If not can you tell me were it is on the tranny in the general spot and what it lookslike Ill find it. Also there is a cable you turn to shift earlier or later weres that and wich wy makes it shift later?
Super Member
Joined: Oct 2008
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From: seattle
1990 300ce supercharged and intercooled
There are lots of different first gear start cars. I have a list somewhere. Most are the low power cars. For instance the 300sl or the 300e with the 2.6l motor.
I will see if I can find the list in my books.
I will see if I can find the list in my books.
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95' AMG SeeThreeSix
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Thread Starter
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Joined: Apr 2008
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From: Forethill, Ca Northcal
85 euro w124 300d non turbo black on black......coming soon hx35 turbo intercooler
Still havent found the valve body. Cleaned out my regulator that has the vaccumline to it. car runs and shifts great. Laying under the car feet under engine is it on the right or left or end. its not the down shift modular at the end right of the tranny?
Also the cable you turn to make the tranny shift ahrder is that the cable that is conected to the throttle
?? Can I take the down shift button under the peddle and move it so I can hit it??
Also the cable you turn to make the tranny shift ahrder is that the cable that is conected to the throttle
?? Can I take the down shift button under the peddle and move it so I can hit it??
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Joined: Jan 2008
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From: Huntsville, AL
2005 E320 CDI
Still havent found the valve body. Cleaned out my regulator that has the vaccumline to it. car runs and shifts great. Laying under the car feet under engine is it on the right or left or end. its not the down shift modular at the end right of the tranny?
Also the cable you turn to make the tranny shift ahrder is that the cable that is conected to the throttle
?? Can I take the down shift button under the peddle and move it so I can hit it??
Also the cable you turn to make the tranny shift ahrder is that the cable that is conected to the throttle
?? Can I take the down shift button under the peddle and move it so I can hit it??
No need to move the down shift switch from under the pedal; just add another switch in parallel. I have not done this but it is a common mod.
