I have a 1993 300E with M104 and 722.4 transmission... one day... i noticed my kick-down wasn't working... so I bought a new kickdown switch. It DID NOT solve the problem.
The gas pedal is broken and could be replaced... I'm thinking that the variance of not properly aligning (still hits the kickdown switch though) might not be telling the ECU that it's at WOT??? So if gas pedal gets replaced... and still nothing.... where do go from there?

It sucks when going about 8 mph and really need to get up and move... and floor it and just get no power!! Even dumping the gearbox won't get u into 1st gear unless stopped or going slow enough with enough engine load....

Thanks for any insight.

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2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)

Have you checked and adjusted the control pressure cable?

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Prost!

there is a kickdown solenoid on the transmission too, make sure its not bad, and firstly make sure that the transmission is adjusted correctly which entails.

1 transmission fluid level correct (for dead cold 722.4, the level should be at the curl of the dipstick - not at the scale)

2 - pressure cable correctly set (zero pressure at idle)

3 - vacuum modulator correctly set. (incorrect causes slipping or super hard kick)

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

I did recently add almost a quart of tranny fluid...

I'll check the fluid level. so when u say "cold" that means that I just start the car, let it idle for about a minute, and then test the fluid level?

__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)

Sorry, missed that post... Control Pressure Cable? Nope.. I know nothing of it. where is it and how do I test it?? Thanks!!

__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)

yes - exactly, and if you fill it till the 30 C line you are about nearly 3/4 a quart overfilled,

the correct level at that temperature is where the dipstick curls up into a pointer.

__________________
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

I think I'll take it to my independent mechanic and have him drain a good half quart after I check the fluid. Thanks!

__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)

Haven't had my mechanic drain a little fluid yet (might be time for a str8-up fluid and filter change.... hmmmm...)...

but I'm curious, how exactly does that extra fluid directly affect Kick-down from working? THanks! Curiousity ....

__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)

David, as you're probably aware transmission fluid and filter should be changed every 30,000 miles in that vintage MB automobile. Proper fluid level is checked with the engine/transmission at operating temperature and the engine running with transmission in Park. So leave a pint, or so, out until you drive the car and get it to operating temperature. Then add a few ounces at a time until achieving the proper level on the transmission dipstick.

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Fred Hoelzle

That is a great idea. If someone were to ask me, I would have said 'normal operating temp' too. I just took a cougher of some chronic, and now I feel really GOOD and goofy.. Ahh yes, back to that tranny fluid (eww!?), I'll check it this weekend and probably have it changed by my Benz guy next week.. I always order my own parts from..... right here! Not always the least expensive, but the customer service more than makes up for it, Have a great weekend.

PS: I have driven this car for maybe 18k miles in the past 8 months since I got it. I could be way off as the car's adomoter is stuck in 214,190 or so. I'm sure it's due anyway. and it's some of the BEST PREVENTATIVE MAINTENANCE EVER!

__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)

The control pressure cable runs from the throttle linkage near the intake manifold to the transmission. It needs to be adjusted to zero slack at idle.

__________________
Prost!

Okay... i know of the cable.... and i suppose it's one of those "screws" on the cable (at the linkage of the Throttle body or?) that I twist ...

__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)

Yes. Going from memory, I don't recall any tricks to it.

__________________
Prost!