Intermitent Over Drive (s2 Triptronic)

[bluesky4me]

Hi. I noticed when I first got the car that it did not go into OD until it warmed up a bit and thought this was normal.In the last week or so I have noticed it is sometimes not going into OD. I would like to get some feed back to try and negate any costly trany work.Any one have the same thing?

cheers.

[66yostagea]

Do you have any warning lights on in the dash?

Is the OD button on all the time?

Is the POWER button on?

Check the oil.

[bluesky4me]

The S2 Triptronic has no OD button or power switch ( that I am aware off). It has only done this a couple of times. I just hope its a glitch and not an indication of anything bad to come.

[GorGasm]

it wont go into od (4th) until its warmed up. But should do so afterwards with no issue.

[66yostagea]

The S2 Triptronic has no OD button or power switch ( that I am aware off). It has only done this a couple of times. I just hope its a glitch and not an indication of anything bad to come.

OOPS! I'm only a simple S1, auto driver. See my 4WD thread.

[pixel8r]

it wont go into od (4th) until its warmed up. But should do so afterwards with no issue.

what he said. Its a feature, not a problem.

Some days mine takes longer to hit 4th gear than others, but I have a book from the car dealer I bought it from that says the transmission will not change into 4th gear (OD) until it is either warmed up or your speed requires it (i assume that means if you go over ~80km/h when its cold it should still change into 4th?).

If you find it has trouble going into 4th gear when it is definitely warm (ie. you've been driving for over 10 mins or so) then I'd be getting it checked out by an automatic transmission specialist. When was the last time you had your Automatic Trans serviced?

[3intheBack]

Yeah, it's another case of, the factory knows best. It wont go into 4th until the oil reaches a certain temp. Usually about 3k's down the road.

I do believe from experience that it is the tranny oil temp that we are talking about here, as the engine temp doesnt seem to have any bearing.

[bluesky4me]

Thanks for all the info...I should have said this before.... but what I mean is the little change AFTER 4th gear! I assumed this was OD???...maybe its somthing else (lock up???)...or have I got one with five gears?haha..It definatly does have another shift after 4th on mine but only in normal auto..in sports or triptronic mode it stays in 4th...if you put it back to normal auto it does another shift. I guess another S2 triotronic owner could say if their car dose this.

[joe26f]

putting it in sports/tipronic mode will raise the revs by around 500RPM and when you put it back into normal mode it'll drop those revs, if thats what you are thinking of as another shift, it's not.

[bluesky4me]

Here is some info I got from an official Stagea site.

Transmission

Dualmatic M-ATx

(Electronically controlled 4-speed Automatic Transmission)

Gear ratio

1st 2.785

2nd 1.545

3rd 1.000

4th 0.694

Reverse 2.272

Final 4.083

so isnt final OD and what Im on about ?

[joe26f]

stuffed if i know if you've got the information what you asking for

[Stinky Rooster]

Nup - final ratio is the diff, 'scott nuthin to do with the tranny, you are looking at ALL gear ratio's

Any ratio below 1.000 is overdrive, hence the name OVER drive as in diff being driven at OVER the engine speed

Edited February 16, 2007 by newbie101

[munchstagea]

...maybe its somthing else (lock up???)...or have I got one with five gears?haha..It definatly does have another shift after 4th on mine but only in normal auto..in sports or triptronic mode it stays in 4th...if you put it back to normal auto it does another shift. I guess another S2 triotronic owner could say if their car dose this.

Yep that's the lock up converter kicking in, the revs drop as it "locks up" the torque converter. This means there is no slip between the engine and the gearbox, as if you had a manual with a clutch engaged. And it is electronically controlled and must be excluded when the box is put into sports shift mode.

Cheers

Luke

[Appealing]

Mine does exactly the same thing. I too thought that it was an overdive on 4th, sure feels like it. But as munch says it is probably the lock up convertor. Mine is only really noticable when I shift the stick into the tiptronic position, and 4 comes up on the dash instead of D. The revs definately drop. I haven't paid much attention to when it does it from cold. I will from now on. I'll let you know.

[pixel8r]

This is normal operation over 80km/h. I'm pretty sure mine's done it below 80km/h but as a general rule when over 80km/h at fairly constant throttle the torque converter will lock up. The revs may drop a little also.

If you put your foot down a bit (its usually fairly sensitive) it will unlock to allow you to accelerate again...much like dropping back a gear when you put your foot down a bit.

It will lock and unlock as needed, and it often only takes slight movements of your right foot to do this.

Hope that helps

[Red Sky II]

Mine does it as well but usually only at higher speeds when at a constant pace - eg on the freeway.

Some times it is noticable other times not