Whats Wrong With My Gearbox?

[whitegt33]

there is something wrong with my gearbox.

every time i drive my car for the first 10km or b4 fully warm up,it doesnt shift to the 5th.

my one is a gtst SII auto.i dont konw too much things about cars,any ideas?

Edited July 11, 2008 by whitegt33

[R31Nismoid]

usual

changed the oil recently?

sounds like shagged synchro's, common problem with a car thats been driven harshly/poorly looked after

[whitegt33]

engine oil but not gearbox oil.dont konw how

[cuppas]

to change gear oil:

get it up in the air,

whip out the two plugs that a half inch fits into,

let oil drain out,

replace bottom plug,

fill with oil until it starts coming out of top plug hole

replace plug

easy!

Edited July 12, 2008 by cuppas

[blind_elk]

He said it's an AUTO. They don't have synchros. And I believe you fill them through the dipstick tube.

[whitegt33]

so do you guys think oil would be the only problem.

i have checked the gearbox oil level,still ok,the colour is like light red.

[jonn]

It doesn't go into 5th ever, or it will after it's warmed up?

I'm pretty sure that's normal.

[whitegt33]

it will only shift into 5th after car(or maybe gearbox) warm up,like start the car warm up2-3 mins,diver to a freeway,i can clearly see,the rev stay under 3000rpm@100km/h. but after travel 10km stationary speed,can feel it sfit 5th,and rev drop back to 2600@rpm@100km/h . is that still normal?

[jonn]

To me that sounds normal. I could be wrong but I think it allows the engine to warm up to operating temperature before loading it up into 5th.

My old calais used do this as well. Haven't owned, or driven, an auto for a while though.

[simpletool]

R33 are a 5 speed auto? impressive.

[G0DZLR]

R33 are a 5 speed auto? impressive.

not all were, mainly series II were tho if any. it was a factory extra. (correct me if im wrong)

[Levi_]

I'm not 100% sure but that doesn't sound right. I thought it was 4-speed autos only for the R33.

[whitegt33]

I'm not 100% sure but that doesn't sound right. I thought it was 4-speed autos only for the R33.

dont konw it is 4sp or 5sp,but i definitely can feel that final shift,or can see from the rpm instrument(4th 2800@100km/h 5th 2600@100km/h <or called factory extra>).

i think the way to find out how many speed of the gearbox is count the how many times it shift.which is means 4 shifts u got 5 gears or what ever the factory extra,am i right?

[Levi_]

Well yes and no.

I'm pretty sure it's only a 4 speed auto box in the R33. It may possibly have some sort of overdrive or something, in which case that could be mistaken for some sort of 5th gear.

Searched the net, it always comes up with: "The RB25 turbo comes with either a 4-speed auto or a 5-speed manual".

So if it is some sort of overdrive, then I'd expect to only come on at high speeds (~100km/h) and only once the car was warmed. I wouldn't think any more of it, either way you don't have a 5th gear so there is nothing wrong with your gearbox. Plus, anything under ~3000rpm at ~100km/h is fine. My manual R33 sits at ~2700rpm in 5th on the freeway.

[whitegt33]

Well yes and no.

I'm pretty sure it's only a 4 speed auto box in the R33. It may possibly have some sort of overdrive or something, in which case that could be mistaken for some sort of 5th gear.

Searched the net, it always comes up with: "The RB25 turbo comes with either a 4-speed auto or a 5-speed manual".

So if it is some sort of overdrive, then I'd expect to only come on at high speeds (~100km/h) and only once the car was warmed. I wouldn't think any more of it, either way you don't have a 5th gear so there is nothing wrong with your gearbox. Plus, anything under ~3000rpm at ~100km/h is fine. My manual R33 sits at ~2700rpm in 5th on the freeway.

but it will come up when car warm at low speed,1600rpm@60km/h,if not it will reach low2000rpm@60km/h