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My Auto.'s down shift from 2nd to 1st, when I mash it after a normal slow start in 2nd gear, is borderline violent. I like a good firm down shift but this seems a bit harsh. This is most noticable when the dynamic kickdown is activated, not necessarily a full throttle kickdown switch activation.

No other tranny issues to report. Fluid level is good and has zero leakage. Scheduled for a fluid and filter change tomorrow.

Any thoughts?

mpesik

coooooool
mine doesn't do that. Along with the majority.

Charley B

You might want to shift down to second as your coming to a stop. At around 10 miles per hour there should be a solid authoritative clunk into 1st gear. If not, there is some adjusting that needs to be done.

"This is most noticable when the dynamic kickdown is activated, not necessarily a full throttle kickdown switch activation. "

I'm not sure what you mean by this statement since they are one and the same, unless you have an additional kickdown switch installed. I'm also not sure what you mean by "violent". If your already moving at about 40 miles per hour and manage a 1st gear kick down with full throttle, things will seem to get pretty violent for a few seconds, seeing as how your RPMs are going to jump to about 5 grand and head for seven quickly, if all systems are go. Think of it as flooring a five speed at 40mph and jamming into 1st gear as you dump the clutch. Not exactly your Grannies Sunday go ta meetin manuever.

auzivision

Mine bangs hard if I can get it between 18 and 25 MPH. After that... no dice!

GUMBALL

As the car is slowing to the speed at which the trans shifts down, a throttle blip like one would do with a manual trans, makes for a smoother shift.

Schocki

The dynamic kickdown can oly be activated if all parameters are OK. One of them is a minimum speed of 34 MPH.
My downshift under full load is pretty harsh but it's OK if you consider the massive torque...

jetrainor

How do you 'blip' the throttle with an automatic?

fabric

On takeoff from a start, the transition from 2nd into 1st is pretty smooth. In most other situations, it's somewhat harsh, but I wouldn't classify it as violent.

Might want to try perusing the stuff on auto's at these two links, lots of good info related to auto tran setup/tweaking:

http://www.nichols.nu/cat09.htm
http://members.rennlist.com/pirtle/z...ain.html#trans

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Thanks all,
I'm not familiar with the parameters of the "dynamic kickdown" so maybe I am describing that incorrectly. At a reasonably slow speed in second (15 to 25 mph) if I depress the accelerator pedal quickly & firmly to say about 3/4 throttle (just short of to the floor) the tranny will downshift to first hard. Then of course it launches like a beast. Maybe it's something I just need to get used to and play with.

atb

Russell,

Does your car start in 1st while in "D"? Sounds like someone tightened your bowden cable for first gear starts but maybe went a little too far with it.

SeanR

Sounds exactly like mine so I would say it is pretty normal.

Jim bailey - 928 International

The 94-95 GTS has a special "dynamic kickdown" feature in parallel with the kick down switch under the gas pedal. It measures throttle opening and in the words of Porsche..."to make the 928 GTS with automatic transmission a more agile vehicle..." It works off throttle position and a quick movement. So basically if you move the pedal quickly enough to engage 1st gear the car thinks you are ready to rumble

Randy V

My '94 GTS has the same characteristic - slams into 1st on kickdown. I have read that to reduce this hard downshift the trans cable linkage from the throttle assembly can be tightened a bit. This increases transmission control pressure and results in a smoother shift. I haven't gotten around to doing that adjustment yet.

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That's what I thought.....thanks for the confirmation.

DSC928

Thanks for the comment. I feel better knowing I not alone on this one. I guess I will do some research on tightening the cable linkage as you suggested, makes sense. I hate messing with the linkage too much though, as otherwise it operates perfectly. My luck will have one adjustment lead to two new issues.