[Darkmann]

MY02 E430
She now has ~230K. Just a couple of months ago, she had tranny issues and was leaking oil a bit. I spent ~$2K on the car - conductor plate was replaced. Then I found out a cracking noise in the motor was due to a belt pulley (the tiny one at the top of the motor) which had broken in half - I thought it was a bad valve. I had that replaced, along with the belt. I also had my local mechanic replace the upper chamber gaskets and the valve cover gaskets. The car now runs very quiet and great. So great that I drove her to FL from MD for work (folks, watch the SpaceX launch tomorrow). This old lady is purring like she is new - what a joy to drive. The one "not so good" thing I have noticed is that since the conductor plate replacement, the car takes too much time to respond to WOT. I smash down on the throttle, and 2 seconds later, or so, the car responds. It used to be almost instantaneous prior to replacing the conductor plate. I'll take any suggestions. Thanks. I am really looking forward to the trip back home. I was actually planning on getting rid of the car due to all the apparent issues. Not anymore.

 

[mrboca]

I would clean the MAF. A dirty MAF will have a sluggish response to sudden throttle changes.

 

[illstplaya]

Reset transmission adaption.

 

[hamada128]

Reset transmission adaption.

X 2.

 

[Darkmann]

I would clean the MAF. A dirty MAF will have a sluggish response to sudden throttle changes.

Thanks.

 

[Darkmann]

Reset transmission adaption.

How do I do that? I thought eventually it would "relearn."

 

[hamada128]

Engine off, all windows closed, AC/Climate Off
Turn the Key to the "on" position (the position right before you start your engine)
Press and hold your gas pedal down for like 5 seconds
Turn Key to "off" position (don't remove the key) and then release the gas pedal.
than wait about 2 minutes or so inside the car, don't turn anything ON or open the door for at east 2 mins.

afterwards, go drive your car the way you like to drive it and your transmission will readjust/relearn your style of driving (after like 5 minutes or so)

 

[mrboca]

No harm is done if the above adaptation procedure is performed, however, I do not understand how it will solve the 2-second kick-down delay issue ?

 

[Darkmann]

Engine off, all windows closed, AC/Climate Off
Turn the Key to the "on" position (the position right before you start your engine)
Press and hold your gas pedal down for like 5 seconds
Turn Key to "off" position (don't remove the key) and then release the gas pedal.
than wait about 2 minutes or so inside the car, don't turn anything ON or open the door for at east 2 mins.

afterwards, go drive your car the way you like to drive it and your transmission will readjust/relearn your style of driving (after like 5 minutes or so)

Thanks. I'll try that.

 

[Darkmann]

No harm is done if the above adaptation procedure is performed, however, I do not understand how it will solve the 2-second kick-down delay issue ?

I'll give it a shot and report. Don't know what to expect.

 

[Darkmann]

UPDATE

Thanks. I'll try that.

I did the reset after my last post yesterday. My observations are purely quantitative - I wish I'd done a qualitative test prior to the reset...., my bad.

With Climate Control (CC) off, the car responded measurably quicker - small throttle inputs brought power almost immediately. With CC on, the response was not as catlike as with CC off, but better than before. That was on local roads.

Today I was on the highway, CC on all the way. The response is better than before, but I'm struggling to say it is same as prior to replacing the conductor plate - could be because I don't have any real supporting qualitative data. Regardless, my conclusion is that this reset helped.

By the way hamada128, if I repeat the process again, will my response become twice better?

Also, FYI to all, it's not like the car is anemic - the 2s delay is still pretty quick when passing. I'm just seeking knowledge.

 

[hamada128]

Repeating the reset process will NOT improve it by X2. It will just keep resetting the transmission over and over.
I usually do the reset every couple months on my W210/E320 and W140/S320 and the throttle response is noticeable like yours especially with there is no load on the engine such as the AC.

 

[Darkmann]

Repeating the reset process will NOT improve it by X2. It will just keep resetting the transmission over and over.....

That was just a joke:grin

However, seriously, what does the system reset the tranny to?