Hello,

this happened to me today: I was slowing down while approaching a traffic light. After changing gears to neutral and a few meters before coming to a stop,  the engine struggled a bit for one second or so, and then just stalled. It felt like trying to stop while being in  2nd-3rd gear (without depressing the clutch) , but with less vibration. Any idea what kind of issue could cause this? I also notice that sometimes the idle is not constant, the RPM's go a bit lower for some seconds, and then back up. My car is a Octavia MK2 combi 2012, with 1.4TSI engine. 

 

 

It could be many things, first step is to have a diagnostic scan to see what the car reports.

Not sure how helpful it is, but I have just checked for fault codes using a bluetooth OBD2 scanner and the Torque Lite app, and it says there are no logged fault codes.

When was it last serviced/what was done?

I bought the car last year, and it was serviced in December. 

These were changed: oil, filters (oil, gasoline, air),  water pump, accessory belt.

Other that that, I had the turbo removed, inspected, and cleaned, because the P0234 overboost fault code showed up. But the problem was actually with the N75 valve, which was eventually replaced.

 

Yesterday I believe I noticed something related to the current issue. It was again under braking, in neutral. A few meters before coming to a stop the engine revs went up a bit, for 1 second or so (obviously without me touching the throttle pedal).

Does this engine have an IAC (idle air control) valve? I read this might be the culprit for the issue I'm having.

Anyways, next week I'll take the car to the service. I want to replace the spark plugs, maybe ignition coils, and have the throttle body cleaned & inspected.  I'll report back if the issue will disappear after the servicing.