Jump to content
SAU Community

Intermitent Over Drive (s2 Triptronic)

bluesky4me

By bluesky4me,
in Four Door Family & Wagoneers

 Share

Recommended Posts

bluesky4me Community Regular

bluesky4me

Posted
Posted

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 Grand Master

66yostagea

Posted
Posted
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 Mentor

pixel8r

Posted
Posted
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 Rising Star

3intheBack

Posted
Posted

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 Community Regular

bluesky4me

Posted
  • Author
Posted

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 Proficient

joe26f

Posted
Posted

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 Community Regular

bluesky4me

Posted
  • Author
Posted

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 ?

Stinky Rooster Grand Master

Stinky Rooster

Posted
Posted (edited)

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 by newbie101
munchstagea Mentor

munchstagea

Posted
Posted
...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 Proficient

Appealing

Posted
Posted

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 Mentor

pixel8r

Posted
Posted

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 :wave:

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      NC MX5

      By GTSBoy · Posted

      Does that German restaurant still exist in the old place out the NW end of Goulburn? When I say "out the NW end of"...I am really being vague. It was 1997 when I was last there, and the only point of reference I can recall is that it was on the opposite side of the main drag from the big merino. And when I say "opposite side of the main drag", I don't mean "on the main drag". It was either a couple of streets back from there, or might have even been out in the sticks a bit further. Was an old farm building or mill or somesuch. And when I say "the big merino" I might actually be thinking of a completely different part of town, because I just looked on maps and the big bugger is not where I remembered him to be! The food was good, consisting largely of various German mystery-meat sausage/loaf things and kartofflen.
    • GTSBoy
      R33 GTR running -9 with no tune

      By GTSBoy · Posted

      So while the second sentence is completely correct and the whole point of the conversation, the first sentence bears consideration. If this bloke is just hoping to throw big turbos on and drive it around, because there are no helpful facilities at all in his tropical paradise** then he likely has zero chance of even knowing what the TP is on the last column in the stock maps, let alone know whether the ECU is operating anywhere near it or past it. So the point is very very moot. And, per what I said before, at stock boost on those turbos, you may well be off the end of the map. **I'm just back from Vanuatu, so I know exactly what small Pacific nations can be like wrt paradise without requisite facilities. But it's not even that simple. I put a high flow on my car and had to drive it around with a proper tune because of the lack of opportunity*** to put the bigger AFM and injectors into it to allow it to be tuned. I had to turn the boost down to less than I had before, and back off the boost controller's ramp, because it was exploring parts of the map that it didn't drive in before, and really couldn't access for tuning on the dyno either, and so was pinging. It was still well within the last column, because when I first**** set up the Nistune on the Neo I rescaled all axes of the maps to give some more space to explore. ***Family dyno was broken ****This was 13 years ago, and the TIM thing wasn't a thing then and so TP would definitely grow when pushing past the stock tune's limits.
    • joshuaho96
      Squeaking clutch/throw out bearing

      By joshuaho96 · Posted

      Yep, this bit another local owner. I caught it before putting the transmission back into the car, what I noticed was the pressure plate fingers weren't flat and even. It's more obvious with the pull style clutch because the throwout bearing ring was visibly not flat once everything is put together. Nismo should really update their instructions to call out this specific detail. I'm not even sure the clutch as-shipped orients everything properly.
    • jayden_l33
      Squeaking clutch/throw out bearing

      By jayden_l33 · Posted

      It ended up being that orientation of the float hub in relation to the clutch disk, when I installed it, I heard a loud click and being stupid, I decided to not take it a part and check it. The hub didn't properly align with the clutch disk and was causing the issue. Definitely an odd one! Dahtone Racing was able to fix me right up, stand up blokes!      
    • joshuaho96
      R33 GTR running -9 with no tune

      By joshuaho96 · Posted

      Right, but I'm saying on the stock ECU measured airmass from the MAF is no higher than stock. So it's accounting for the higher flow rate iso-manifold pressure. You just have to keep turning down the boost until you're within the stock tune's load scale. If you run off the end there's no telling what will happen. This does mean there's zero benefit to the turbos you're running vs stock, if anything it's just a straight downgrade because the transient response is worse, you don't even get the ECU's boost solenoid helping to pull the wastegate closed during initial spool, and peak power is only whatever the factory map can give you before you hit the R&R corner. On a -9 I would bet that you would have to change out the wastegate spring once you have a real ECU and you're tuning it for real. I'm not saying this is a remotely ideal state of affairs, it's just a way to keep it driveable until you can get a proper tune done.
×
×
  • Create New...