Hey everyone. 

I've been stalking this forum ever since i got my fabia. I got all the usual issues like the rattle in the glove box, poor dipped beams, dimly lit dashboard warning lights when specific lights are on.

But the big problem i have now is that when i accelerate slowly from let's say 30mph in 5'th, all the way to 70-80mph, at random it will get confused when switching up the gears, judder a bit and if i don't let my foot off the gas, i got it 2 times to rev up like crazy and enter some sort of temporary neutral. Switching over to manual and cycling through gears at speed does not replicate the issue, neither putting it it "S".

I need to mention that it has had a mechatronic unit replaced before i bought it, but this issue seems to be recent. Help?

Don't know if this will help, a good friend had this issue and landed up being a clooged gearbox filter, a new filter and a complete oil change and everything was fine again, also heard of a leaking oil cooler on the top of the gearbox allowing water to enter the gearbox, in saying that the water level also needed toping up and gearbox level increased as water level dropped, think they replaced the whole box for a used one as not sure that the cooler could be changed on it's own but know this cured the problem with the gears and water loss.

@Athrx

Welcome.

Was the MCU replaced while the car was in the manufacturers warranty period?

Do you have a record of who replaced the MCU & when

& can you not speak with them?   Or are they not in your area.

 

Is the car a 2010-2012 that had Service Campaign 34F7 carried out which was the DSG oil changed from Synthetic to mineral & had a software update,

or

a 2013-2014 that maybe needed '34h5' done and if not needed a new MCU as there had been a leak? 

 

EDIT.

I see the car is a 2013. 

 So likely should have had '34H5' done which was a software update started in 2017.

?

So when was the replacement Mechatronic Control Unit to the car?

Edited 9 January, 20224 yr by roottoot

4 hours ago, Murdockman said:

Don't know if this will help, a good friend had this issue and landed up being a clooged gearbox filter, a new filter and a complete oil change and everything was fine again, also heard of a leaking oil cooler on the top of the gearbox allowing water to enter the gearbox, in saying that the water level also needed toping up and gearbox level increased as water level dropped, think they replaced the whole box for a used one as not sure that the cooler could be changed on it's own but know this cured the problem with the gears and water loss.

Hi. What would changing the filter and oil take? I got a friend with some tool specific for gearbox oil, but when i asked about the filter he looked at me confused. Better question: is it a back yard on jack stands job?

3 hours ago, roottoot said:

@Athrx

Welcome.

Was the MCU replaced while the car was in the manufacturers warranty period?

Do you have a record of who replaced the MCU & when

& can you not speak with them?   Or are they not in your area.

 

Is the car a 2010-2012 that had Service Campaign 34F7 carried out which was the DSG oil changed from Synthetic to mineral & had a software update,

or

a 2013-2014 that maybe needed '34h5' done and if not needed a new MCU as there had been a leak? 

 

EDIT.

I see the car is a 2013. 

 So likely should have had '34H5' done which was a software update started in 2017.

?

So when was the replacement Mechatronic Control Unit to the car?

Thanks! 

From what i could gather it was a very low use car (28k in october when bought), eventually got the mechatronics unit busted from all the humidity (as well as the ghost lights on the dash), was sold off cheaply, fixed by the dealership and sold to me.

 

What would the latest software update fix?

I noticed i have no issues with the car juddering between 1'st, 2'nd and 3'rd, things other people were complaining, particularly when braking, and i know there was an update for that at some point.

I'm thinking to just let the dealership warranty deal with it when i can stay without a car for a few weeks

The Service Campaign 34H5 was preventative to stop issues with pressure and leaks and the need for replacing the MCU or the DSG & MCU.

That was the Software Update, started in 2017.

 

So that is in the past now. 

You need a Qualified Technician to diagnose the fault now and hopefully repair economically.  

Maybe that will best be at an Automatic Specialist rather than at a Skoda Main Dealership,

 

BUT,

if you have a valid warranty then get it to a Skoda Approved Repairer to get the diagnosis.  Do not let anyone else touch it.

 

PS

Humidity has nothing to do with it.   It was heat and pressure that caused failures.

That is just the crap VW came away with in 2012 when they had to do a World Wide recall excluding Europe and 2 years later then they started a Service Campaign in Europe, but that was 34F7 and the oil type change. 

Edited 9 January, 20224 yr by roottoot

Also, if anyone knows: can a vrs instrument cluster be coded in for my car? And if so, by who, and at what price. Mine needs fixing or replacing soon, and it may be cheaper to just upgrade from the ****ty green one to the maxidot i like. The small problem is that most of the ones i see are crashed and scrapped at 60k+ miles

Update for anyone following this specific juddering issue:

Changed the spark plugs to what eurocarparts gave me in the ngk label, went to the only shop open on sunday and 20 minutes later no more juddering! Straight to the first A13 ramp in 7'th to stress test them, and until today i still can't wipe the smile off my face.

 

The old fitted spark plugs had the thread and overall length about 3mm shorter and some carbon electrode. Looking for the serial number, they seem common on vauxhalls, hondas, mazda, really general purpose plugs that somehow managed to work on my car too.

 

Shop was a tyre repair place in plaistow, one man band mechanic over there, really nice old man. Wanted £15 for the job, gave him £30 and told him i'll come back for tyres soon.

 

Now on to change the different sized ditch finder front tyres the car came with...

@Athrx  So what are the plugs you got?  What numbers did Eurocarparts give You?

1 minute ago, roottoot said:

@Athrx  So what are the plugs you got?  What numbers did Eurocarparts give You?

It's the IZFR6P7 plugs. Really the only ngk choice when the number plate is on there. Completely forgot to take pictures comparing them side by side. Longer thread and total length, sharper electrode, nice and shiny

Good.

http://briskoda.net/forums/topic/363902-torque-settings-for-spark-plug-ngk-izfr6p7

http://briskoda.net/forums/topic/454543-12-105-bhp-monte-carlo-spark-plugs

 

ZFR5F is a totally wrong and unsuitable plug for a 2013 1.2tsi. In addition to being too short, they are also the wrong heat range. Hopefully the cylinder head threads arent damaged at the bottom end. Whoever fitted them was a fwit.

 

Correct plugs are 

NGK IZFR6P7

BOSCH FR 6 HI 332

Skoda/VAG 03F 905 600 A

 

They are an iridium alloy fine tip centre electrode with a platinum insert in the ground electrode. Ultra hard wearing plug needed for TSI and the waste spark ignition system which wears the plugs much faster than individual coil packs.

 

Glad you got the car sorted, a good lesson to others not to jump to conclusions about their DSG without eliminating other simpler causes, in your case the duff spark plugs causing juddering which confused the DSG.

 

Well done

Edited 7 February, 20224 yr by xman

7 hours ago, xman said:

ZFR5F is a totally wrong and unsuitable plug for a 2013 1.2tsi. In addition to being too short, they are also the wrong heat range. Hopefully the cylinder head threads arent damaged at the bottom end. Whoever fitted them was a fwit.

 

Correct plugs are 

NGK IZFR6P7

BOSCH FR 6 HI 332

Skoda/VAG 03F 905 600 A

 

They are an iridium alloy fine tip centre electrode with a platinum insert in the ground electrode. Ultra hard wearing plug needed for TSI and the waste spark ignition system which wears the plugs much faster than individual coil packs.

 

Glad you got the car sorted, a good lesson to others not to jump to conclusions about their DSG without eliminating other simpler causes, in your case the duff spark plugs causing juddering which confused the DSG.

 

Well done

Thanks! 

I did run it like this for a while, and presumably plenty of unburned petrol found it's way to the cat and into the oil, but as long as there is no measurable oil consumption and no funny noises (besides the dashboard rattles, of course), i guess it's undamaged.

 

I assume whoever prepared the car to be sold did the change without any care for what the car needs, topped up the oil until just over the highest mark, changed *one* front tyre to whatever spare size was in the garage and signed it off as the next guy's problem