Cayman 718 GPF Failure

[patersont718t]

I have been reading what has been happening over the last 3 years and a phone call at this stage is irrelevant to me.
thank you for your kind offer.

what I am wanting is it posted in here the true extent of the issue, ie as posted above how many cars affected and build dates.

That data should be a minimum seeing as we have quite a lengthy debate, this will be the 1040th post on the issue.

granted some are have issues a bit like the early days of dpf’s and all I’m seeing at the moment is the lack of real car numbers affected by this data.

this whole issue smacked of being blown out of proportion for the few affected thereby taring all as potentially the same?

if it wasn’t for this forum and Dave’s posts I wouldn’t have known about the GPF and how to fight the £9700 charge, but you have fair point, but asking owners to pay up to £9,700 for a repair that many believe stems from a manufacturing defect simply isn’t right. What’s even more frustrating is Porsche’s handling of the situation. In my view, it’s Porsche’s continued denial that there’s a wider issue that’s keeping this story alive. As more cars develop the same apparent defect, the number of affected owners will only continue to grow, making it increasingly difficult to dismiss as isolated cases.

If Porsche simply do the right thing the issue goes away.

 

[Motorhead]

^^^ This exactly.

Thankfully Dale has been fortunate to date that he hasn’t been affected by this problem, unlike those - many of whom are likely to be outside the Club and probably aren’t aware of this post - who have have been asked to fork-out an eye-watering sum by their dealers to get their car back on the road after what Dave has shown to be an incorrect diagnosis.

I speak as someone who runs an 987.2 CS and so thankfully I’m not affected by this issue, but in my view even one misdiagnosed case is one too many!

Jeff

Edit: For context I looked at How Many Left to check how many 2.0L 718 Caymans were newly registered. Dave will be able to tell us the period we’re looking at for the failures he’s seen, but if we just take the three years 2019, 2020 and 2021 there were 83 Base cars and 48 T cars registered, although there will be a few more Base cars which were registered from September 2018 when 69 cars were registered in that year. I can’t vouch for the accuracy of those numbers and of course I’m sure that there will be a similar number of Boxsters, but the numbers aren’t huge.

 

[Cyclemotor1958]

Hi Jeff and Tony,

Thanks for your thoughts on this subject, we always knew that the more we pushed in trying to work out this problem, their would be consequential damage to the image of these cars.

Up until we got sight of the Porsche internal memo, we had no idea on how many cars could be affected by this issue, but we learnt that two major defects on these cars was standing out.

The first was how the car reports the ash % content, and the second was there was no way on these cars to carry out any adaptation of the differential pressure sensor or the adaptation of a GPF filter.

These adaptations are fundamental to an emission controlled vehicle, and without them their would be a problem eventually.

We now have the knowledge to look at these cars and make a reasonable prediction on any car that trouble could be ahead.

Dale, wants to know how many cars have been affected we don't, we just need Porsche to own up to this fault.

The internal memo says it all.

Worldwide, and model year 2018/2019

It says if the engine light comes on, and the DTC code P242F is present your journey begins.

What the memo doesn't say is who pays for the checks and replacement of the modified GPF.

Enclose their memo again for your attention again, they need to tell us how many cars are affected, they caused this problem we didn't.

We naturally assumed that a modified filter brought out to fix this emission control fault would be covered by the manufacturer, when they started paying we appreciated it, they have now stopped.

Thats why we are repeating ourselves all the time, to convince them to do the right thing.


Dave

 

[Cyclemotor1958]

Hi Guys & Girls

Well, we've had a 2021 Boxster 718 2.0's backpressure checked with a manometer today, the car has done 43K.

Its been running around for more than year with the warning light coming on, and off.
The owner has been checking the ash reading on his car using his own diagnostic tester.

He carried out this backpressure check today with his ash load at 100%, and the usual not soot present.

Enclose a photo of his dashboard warning light on and message, also a photo showing no soot present, and another photo showing the measured 100% reading.

And the final photo showing the pressure reading taken from his manometer connected to the differential pressure input pipe to the sensor.

IT READS 0.028 KPA, IF YOU CONVERT TO HPA YOU GET 0.28 HPA, AND CONVERTED TO PSI YOU GET 0.00406105567.

SOD ALL PRESSURE AGAIN.

So this is another 718 model thats had a backpressure check carried out and there is no pressure, but its not a 2019 model, its a 2021 model.

This is why are Dealers are refusing to carry out this back pressure check, because if they did they would see that no pressure is in the GPF.

So no pressure, means no need to replace the GPF, if the exhaust tail pipes have no signs of soot, then the GPF is ok.

Unfortunately I have never been able to get Dealers or Porsche independents to do these checks because of a fear that any involvement with ourselves could possibly jeopardise their relationship with Porsche.

So we are getting our owners to carry out these backpressure checks.

With have sufficient evidence now that a simple backpressure check would stop the fittment of these modified GPF filters.

We will push on

Dave

 

[Cyclemotor1958]

Hi its me again,

Enclose below is a YouTube video showing why its so important to check the differential pressure sensor readings on a vehicle with a suspected blocked filter.

Sorry its a diesel car, but you can see how easy the backpressure can be checked.

This guy is brilliant and he explains this fault in a way thats easily understood.

Dave

 

[Holy_Joe]

Is 2021 the youngest car impacted?

I think earlier in the thread it was mentioned there was a 911 model with a similar 'fault' - any other models impacted?