MY19 GTI Manual - Engine Intermittently Cutting Out

[fredgroves]

Gaming those WLTP figures....

[Yusee]

I wonder if they have (post WLTP) backed the idle revs off to real low (which will effect CO2 emissions positively) and sometimes this causes a stall...

I suspect you haven't heard much of the problem because how many new (post WLTP) manual GTI owners will be on forums will there be? R's and GTD's are now DSG only and most people prefer a DSG GTI....

I doubt it's anything to do with idle revs. I have a post WLTP manual. Smooth as anything- never comes close to stalling.
Sounds like an intermittent fault with one of the sensors when it gets hot.

I suspect that it is a low idle combined with a poor compensation to air-fuel mix caused by warmer temperature giving less dense air.

I'll eat my hat if this isn't post WLTP buggery with the ECU to game the figures... by any chance is a manual GTI just under a CO2 bracket by couple of g/km?

Checked my V5.CO2 is 155, which isn’t close to a threshold.
I’ve been out in mine earlier with this thread in mind. I watched the rev counter each time I pulled up to stop in some fairly slow town traffic. It always very smoothly stops at 750, without any variation, even when I tried de-clutching from over 2500 rpm. It’s a hot day, I have AC on too.
I’m sure you’re right that there has been some gaming for wltp. The question then is why this problem affects some owners and not others? Mine has always been smooth and very easy to drive in slow town traffic.
If my car was stalling in the way that some are describing, i’d be asking VW to fix it- it has to be a fault?

[fredgroves]

Anyone who's got this problem maybe try something out of my curiosity.... if (on a safe piece of straight private road *ahem*) you are going along at say a steady 40mph and you just come off the throttle push the clutch in, does it stall then? If the idle revs were too low, it would get lumpy and stall.

From what I've read earlier across the internet, some people believe that the clutch is not fully disengaging, which combined with the road wheels being stopped stall it as certain as it would be if you had stopped in gear without the clutch depressed at all - which wouldn't happen in my 40mph test above.

Some are saying that its the hydraulic reservoir somehow and that by pumping the clutch pedal 8-9 times fully it fixes it not just for that day, but permanently.... maybe an airlock in the reservoir?

Just trying to think logically here!

[sjw]

I jumped from a DSG 2018 GTI 7.5 PP into a DSG 2019 post WLTP GTI PP

There is a definitely a difference in the map with engine / DSG box.

The new car does feel very very close to stalling when coming to a stop - this has nothing to do with stop start - that is always turned off.

Also when in sport mode and manual DSG, the car will change up automatically before redline, definitely different from the previous GTI

What did the previous car do then? I have a 2018 GTI and it certainly will change up

[ick2006]

Further to my ongoing stalling problem, I successfully rejected my car and was due to get a new Golf GTI DSG on a 69 plate this coming Monday.  I'll go into more detail when I get the car about what has happened over the last month or two.

However, today I received a call from the garage saying that they couldn't currently register it, or indeed any other VW on a 69 plate, due to some problem caused by new WLTP/RDE regulations due to come into force on 1st September.  Not surprisingly VW are trying to get this sorted ASAP.

Has anyone else who's expecting a car on a 69 plate heard from their garage about this?

[fredgroves]

With effect from 1 September 2019 national authorities shall prohibit the registration, sale or entry into service of new vehicles that do not comply with the requirements set out in Annex IX of the Directive 2007/46/EC as amended by Commission Regulation (EU) 2018/183

Basically WLTP part 2.... and VW caught wrong footed again by the sound of things.

[kmpowell]

RDE details here:

https://caremissionstestingfacts.eu/rde-real-driving-emissions-test/

All new cars sold after 1st September 2019 must also pass these tests, as well as WLTP.

[Grahamt]

Further to my ongoing stalling problem, I successfully rejected my car and was due to get a new Golf GTI DSG on a 69 plate this coming Monday.  I'll go into more detail when I get the car about what has happened over the last month or two.

However, today I received a call from the garage saying that they couldn't currently register it, or indeed any other VW on a 69 plate, due to some problem caused by new WLTP/RDE regulations due to come into force on 1st September.  Not surprisingly VW are trying to get this sorted ASAP.

Has anyone else who's expecting a car on a 69 plate heard from their garage about this?

Well done on getting a rejection for the car, most important thing is they've agreed to it so if the replacement takes a bit longer then it's free miles on the current one 

[fredgroves]

There is a good thread here that gives a lot of detail:

https://www.trocforums.co.uk/viewtopic.php?t=1268

[Berwickchaser7]

Further to my ongoing stalling problem, I successfully rejected my car and was due to get a new Golf GTI DSG on a 69 plate this coming Monday.  I'll go into more detail when I get the car about what has happened over the last month or two.

However, today I received a call from the garage saying that they couldn't currently register it, or indeed any other VW on a 69 plate, due to some problem caused by new WLTP/RDE regulations due to come into force on 1st September.  Not surprisingly VW are trying to get this sorted ASAP.

Has anyone else who's expecting a car on a 69 plate heard from their garage about this?

Got exactly the same issue, told 2 days before collection I can’t collect my GTI. Bit gutted as I’ve been told it take as long as upto the 9th September for the block to be removed. Only positive is that I’ve been given a car to use until then and apparently VW are looking into some form of compensation for affected customers.