Hi guys! It's good to be here - hoping that the forum is still active enough so that my issue can be resolved :slayer:

Randomly at cold starts, the RPM rises to about 1.2k, stays there, then lowers itself down to 8-900. So this is okay I guess, because of the cold start, and 8-900 RPM is good.

The problem starts where I put the lever in (D)rive. I can see that the RPM is going up and down, as if it wants to move the car but it's stuck - it isn't, it's on a flat surface in a parking garage. Finally it pulls real hard as if you've been hit on the back of the car, and off we go. I sense that something is dirty somewhere in the gearbox, and it causes it to get stuck? (R)everse does not do this, FYI.

Also when I get to a red light, the RPM lowers as I slow down (obviously) but as soon as I stop, it goes down to 550. Then it gets itself up to 600, then 570, 650, 800, 700 - so you can get an idea, it's going up and down from 500 until it gets to around 800.

I have made a video of this, not sure if that would help.

Does anyone have any suggestions? It would be greatly appreciated!

Thanks a lot!

2000 mk2/a 1.2 16v CVT auto gearbox

Hi

Possibly a vacuum leak?

Check all the hoses around the throttle body


If you put it in neutral.. does it idle well.. or still up and down??

Charlie

Hey!

Yep, that's actually smart, I'll do that.
Can you tell me how I would be able to do that without a jack/lift? And where the throttle body is located? I know it's a stupid question

It idles well in (N)eutral as far as I remember.

Peter

Hi Peter.

Ive not had a CVT since a 1988 uno

They had lots of tiny hoses that caused bad running

I believe your punto uses electronics more.. so less hoses

Lets rule out the normal engine stuff ..before worrying about the relatively rare gearbox


I havent had a 188 punto for 10 years ..
so will rely on the forums great SEARCH for info and links

https://www.fiatforum.com/punto-ii/327302-punto-idle-control-valve.html?327302=#post3258181

Im sure there are guides to help locate this easier for you

Thanks a lot Charlie!