HI All, newly registered here today, but have visited the forum many times for tech info. Hoping someone could shed some light etc on a niggly little problem i have with my Octavia 2 - 1.6tdi CAYC 2011. Had the car for getting on 8 years now and its been fantstic. Usual maintenance etc. Over the last couple of years the car has very slowly acquired a very small niggly but noticeable, to me anyway, a hesitation, a slight difference in timing between the throttle pedal and the acceleration. To be honest I dont know exactly how to describe it. Its a very small uptake, Probably if you drove it you would not notice, but i do. On a long journey its getting a bit tiresome. And in traffic its getting a bit jerky. And its having a small effect on the cruise control. Get the speed just right going down hill and it feels very unhappy. I have come to notice it more as hired a van the other day and was a pleasure to drive it without the jerk. I have tried to find a relative thread here on the forum but cant find anything. I know the car has a by wire arrangement from pedal to throttle so have checked all connections. NO codes have ever come up. I do have an IcarSoft reader which I used but nothing is out of the ordinary. I am thinking of wear in the Throttle body. Maybe in the brass gears inside. I have tried the static pedal to floor switch on and leave for 1 minute but that doesnt work. I am able to replace throttle body myself, but have read you have to have VCDS to re-programme both. My other thinking is if I was to remove body and open up the side to replace brass gears with a kit, Would I be OK in not needing VCDS.

         Or does anyone have any other pointers I can go down, maybe I am in the wrong area of thinking..................................kind regards.

ahhh! just seen I have put this in Fabia - DOH !!

It's the same engine so it doesn't really matter.

 

The throttle body is really a means of shutting the engine down cleanly and for providing some engine braking so I think you may be barking up the wrong tree.

 

The most likely source of the hesitation is the EGR valve or perhaps the injectors.

 

I would start by getting the EGR valve and pipework nice and clean then look at the injectors if the issue persists.

hi , i have had a look at the egr valve but not removed it due to its location, removed all pipework tho due to an old turbo boost problem. They are all fine, and all of the injectors were replaced 5000 miles ago..........thanks