Hello folks,

 

My first post on Briskoda.

I've recently purchased a used 2016 Skoda superb 1.8 Tsi with DSG gearbox with a dry clutch (DQ200 ?) in very good condition

and knowing the possible liabilities that come along such older cars, kept some funds aside, also aware of the DSG problems. 

 

I've driven about 4k Kms since i bought it. I absolutely love the car.

 

Symptoms:

Check engine light on, scan shows bad O2 sensor, Bank 1 sensor 2 ( Post cat) 

Sensor went bad about 2 months back and the engine light would flash on and off every couple days. no problems in driving the car. 

 

Since past 3 weeks i started feeling Jerks between 2000 and 3000 Rpm precisely. 

Happens post 40-50kmph speeds from 3rd gear till the 7th. 

The car drives absolutely smooth below 2k rpm. With a light foot at any speeds (Tested on highway 100 upto 180kmph) No issues at all till the Rpm is below 2k. 

 

Problems starts when you lets say try to overtake and press the peddle down,  car will jerk 2 - 3 times while going from 2k to 3k rpm. 

Once 3k rpm is crossed lets say in sports mode car will rev just fine till 6k. 

From 3rd till 7th gear car will jerk in 2-3k rpm range. Almost like choking for air or fuel? 

 

Took the car to the dealer, they diagnosed it to a bad O2 sensor, OEM part was replaced. 

They found no other problems in the car or scan codes, no other lights on the dashboard. 

When i went to pick up the car it was still jerking, as per them it isn't anymore. 

 

Car still jerks. I was told they have done a dsg and some other reset? ECM? 

Was advised to drive the car for a week and let the system adjust to new sensor etc. 

 

Local garage thinks problem could be related to Bad Spark plugs, ignition coil, fuel injectors, clogged throttle body, etc. 

 

Dealer was asked to checked all these parts and they found no issues. 

 

Now i am wondering the way ahead, and hoping someone can help me what should be my next steps.

 

Many thanks,

N 

 

 

 

 

 

 

 

 

 

Anyone? 

Plugs or coils was my first guess. 
sounded like a plug or coil breaking down under load. It’s also similar to what the focus RS does when it damages the BCM. 
I’d start with a set of OEM plugs though. 

On 21/12/2023 at 01:08, UndertheRadar said:

Plugs or coils was my first guess. 
sounded like a plug or coil breaking down under load. It’s also similar to what the focus RS does when it damages the BCM. 
I’d start with a set of OEM plugs though. 

Thanks, my local mechanic also suggested the same. 

So first thing i am going to the dealer to get new oem spark plugs.

 

Will report back.

 

thanks 

13 minutes ago, strseq said:

Thanks, my local mechanic also suggested the same. 

So first thing i am going to the dealer to get new oem spark plugs.

 

Will report back.

 

thanks 

APR do a decent reliable coil pack if you need them rather than OEM, if it’s still there after the plugs are changed. 

2 hours ago, UndertheRadar said:

APR do a decent reliable coil pack if you need them rather than OEM, if it’s still there after the plugs are changed. 

Ok checking on this too, thanks for your response

On 21/12/2023 at 01:08, UndertheRadar said:

Plugs or coils was my first guess. 
sounded like a plug or coil breaking down under load. It’s also similar to what the focus RS does when it damages the BCM. 
I’d start with a set of OEM plugs though. 

Plugs were changed,

problem still continued.

 

After 2 days of coil change it got worse, EPC and engine check light came one, scan code showed cylinder 4 missfire.

 

upon inspection of coil no 4, the rubber boot had a crack in it, the mechanic put a electrical tape and sealed the crack 

and we did some test drives and could not get the car to jerk again.

 

I am guessing it's the coil, Can a crack in the coil rubber boot do this?

 

I will look into changing the coil or the boot if the problem continues.

 

 

strseq,  “am guessing it's the coil, Can a crack in the coil rubberboot do this?”

yes,

- if the crack in the coil rubber boot is in a position that allows the spark (or even the voltage feed to the coil) to earth out on the cylinder head instead of travelling down the spark plug and igniting the mixture - it would cause a misfire.    And such misfires often occur only at certain engine revs / load combinations rather than constantly.      Your mechanic’s insulating tape seem to confirm.