Hi everyone!
I am the owner of a Skoda Yeti 1.2 TSI, model year 2008 and I am facing the following problem.
For a long time now, when the engine is idling and the engine is cold, I feel a shudder in the steering wheel and the cabin in general, and the vehicle goes into limp mode. when the engine reaches temperature then the vehicle works normally.
It should be noted that I did a revamp at the engine at August. Spark plugs, spark plug wires and multiplier are new.
Does anyone have a similar experience and if so how did they solve it?
Thanks!

Hi

 

This sounds like a misfire.  You have done the obvious by renewing the ignition components, not sure what you mean by a multiplier but if it's the ignition coil then that's good.

 

Another possibility is that the engine temperature sensor used by the ECU is faulty, this isn't necessarily the same sensor as used for the dashboard gauge.  If the ECU "thinks" that the engine is warmer than it is, you won't be getting a bit of mixture enrichment and may have a lean misfire as a result. These direct injection engines don't need nearly as much "choke" as in the days of long cold inlet manifolds, but they still need some.

 

If the ECU has set limp mode it will have stored error code(s), so reading these should be the next step.

Hello. Thank you for finding the time to answer. 
Yes by multiplier i mean the ignintion coil (used native slang as an expresion here 😅)
When this occured and connected the ODB, the error that always pops is missfire at cylinder no.4. always.

As far as i know a temperature sensor was replaced, but now that you mentioned that two of them exist, i might have to  check which one was replaced. On the other hand when the temperature at the gauge of the dashboard is at place then it works fine.

And something that i forgot to mention above. before i got the car for control unit remap, the temperature indicator at dashboard was rising and fallin while the car was moving.

3 hours ago, Polaris13 said:

When this occurred and connected the ODB, the error that always pops is misfire at cylinder no.4. always.

This could well be a faulty spark plug or leads.

8 minutes ago, Carlodiesel said:

This could well be a faulty spark plug or leads.

 

Hi. Faulty sparks or plugs can not be because different set was used to eliminate this possibility.