[Geneosity]

Hi there guys

i am not sure if it is a problem or normal behaviour of automatic transmission in i30 build year 2014 but when i am in D mode and press accelerator more than usual (but not full) revs goes first up, car starting to accelerate, than revs go down to normal revs which are for that speed i have currently.
i am still pressing throttle, then next gears and revs are just normal.

if i am in manual mode and press accelerator same way, car just start to accelerate, revs not going up down, they just goin up same way like they do with manual transmission.

so this happen only in D mode.

what you think? is it normal? or my tranny is broken
i have around 2K km so far... car is brand new.

it is pretty strange behaviour because it looks like clutch needs longer to fully activate.
an it only happen if i push throttle ~80% down. so want accellerate more than usual.

i am planning to do video, but was not able to do so yet.

[Phil №❶]

That's very hard to tell without actually driving or a video. At 2K distance why are you pushing the throttle to 80%. Is that your normal style of driving.

You could be experiencing wheel spin on a slippery surface.

Or, your torque converter is allowing the engine to slip initially as the car builds up speed, this is commonly called torque multiplication, as the car speed rises, the pressure inside the torque converter builds and engine speed will match the correct gear speed. This is normal under harsh acceleration ad prevents the engine from stalling, like slipping the clutch in a manual car. It is hard on the transmission and wastes fuel, so I wouldn't advise doing this too often.

Or your transmission needs to be checked at your dealer to see if anything is abnormal.

[Geneosity]

That's very hard to tell without actually driving or a video. At 2K distance why are you pushing the throttle to 80%. Is that your normal style of driving.

You could be experiencing wheel spin on a slippery surface.

Or, your torque converter is allowing the engine to slip initially as the car builds up speed, this is commonly called torque multiplication, as the car speed rises, the pressure inside the torque converter builds and engine speed will match the correct gear speed. This is normal under harsh acceleration ad prevents the engine from stalling, like slipping the clutch in a manual car. It is hard on the transmission and wastes fuel, so I wouldn't advise doing this too often.

Or your transmission needs to be checked at your dealer to see if anything is abnormal.

i will do a video to show exactly what it is doing.

no there is no wheel spin.

more less in D mode it seems that tranny is reving slightly up when i push acc pedal harder to get torque
maybe this is the case. i was more less looking for some diesel + automatic tranny owners to get me some feedback how their transmission is working.

[Phil №❶]

Our family owns 2 Diesel, autos. 

They are only the 4 speed as fitted in the previous model.

We have a Hy Tech member    Cruiserfied    who will always give you some very good advice, listen carefully to what he has to say.

[Geneosity]

Our family owns 2 Diesel, autos. 

They are only the 4 speed as fitted in the previous model.

We have a Hy Tech member    Cruiserfied    who will always give you some very good advice, listen carefully to what he has to say.

thanks for tip

[prozac_tr]

I edited my post because i get what u saying;  First of all this is very normal behaivour not just for your car but most of the ATT cars.
Revs go down because it goes kick down mode. Shift goes down to produce rapid acceleration. So that is why rev goes up, than because you are applying  %80 on throttle it understands that you do not want to get kick down mode  and revs goes back to normal. For normal driving conditions.
Do u know what the kick down is?

[cruiserfied]

I assume you are referring to overtaking type acceleration not standing start.
80% throttle will normally force the transmission to shift back a gear which will cause RPM to increase. Perfectly normal.
IF the gear is not changing back its most likely the torque converter unlocking to provide extra RPM to put engine in optimum rev range (pretty much what Phil said) Again perfectly normal.
I recon your trans is working as normal, you just need to get used to a new vehicle

[Geneosity]

I assume you are referring to overtaking type acceleration not standing start.
80% throttle will normally force the transmission to shift back a gear which will cause RPM to increase. Perfectly normal.
IF the gear is not changing back its most likely the torque converter unlocking to provide extra RPM to put engine in optimum rev range (pretty much what Phil said) Again perfectly normal.
I recon your trans is working as normal, you just need to get used to a new vehicle

this is what clarified my worries about ATT
thanks a lot!

BTW i30 diesel + ATT is just gorgeous 

[Phil №❶]

@Geneosity,

Is this your 1st Diesel car

[Geneosity]

@Geneosity,

Is this your 1st Diesel car

nope, it is my first i30 + diesel + ATT
i was mostly driving dualclutch VW cars and old audi 6-speed DSG ATTs...

so was curious about the hyundai ATT they put into i30.

[Johnno]

Mine's the same, nothing to worry about 

I've had 4 auto's and this as to be the best autobox I've had, silky smooth changes sometimes you don't realise its changed up a cog

[Geneosity]

Mine's the same, nothing to worry about 

I've had 4 auto's and this as to be the best autobox I've had, silky smooth changes sometimes you don't realise its changed up a cog

yes, i was very pleased with the ATT in i30 when i first drowe it.
very excited how it will last