2017 Macan GTS Misfiring Issue

[satusai]

Has anyone experienced rough misfiring at idle speed or when slightly pressing accelerator when pulling away/reversing/stop start traffic? Car almost stalls and sounds sort of burbling/rough? Car does it when at temp and only at low speed
Porsche Exeter think it might be cyl bank 4,5,6 but no major fault codes have been registered to support this enough for warranty claim.
Help>>>

 

[Lancerlot]

Could be intermittent failure of a) ignition coil pack or b) faulty fuel pump leading to fuel starvation.
A couple of issues to check for anyway.
Regards,

Clive

 

[JohnCRS]

My Cayman GTS did this a couple of months ago. Running rough under 2000 rpm and nearly stalling every time I came to a stop. Ultimately diagnosed as a fault with the camshaft solenoid on bank 4,5 and 6. This was replaced and car now running fine.

 

[JohnCRS]

Just to add, nothing was shown on the dashboard for about 100 miles, then CEL came on and then, within 10 of the dealer, further warnings - proceed to service PDQ.

 

[Neil1911]

Has anyone experienced rough misfiring at idle speed or when slightly pressing accelerator when pulling away/reversing/stop start traffic? Car almost stalls and sounds sort of burbling/rough? Car does it when at temp and only at low speed
Porsche Exeter think it might be cyl bank 4,5,6 but no major fault codes have been registered to support this enough for warranty claim.
Help>>>

A fault code CANNOT be a prerequisite for attention under the warranty! Kick up a fuss and take someone out to experience it.

 

[satusai]

Thanks all. Update for Porsche Exeter is they've discovered a faulty throttle valve which they're replacing. Let's hope this fixes it.

 

[Guzzvaliant]

Hi Satusai, this is a really interesting thread as since buying my Macan GTS in January I’ve had similar experiences. And the whole driving at slow speed and edging along in traffic has become a little bit of a nightmare. I thought it was a PDK issue but noted it might be throttle problem; the pdk keeps in 2nd nearly all the time at low speeds inc when doing walking speeds up hill which leads to lots of subsequent jumpiness and hesitation and feeling of almost stallling and recovering. In fact the whole experiences is rather jumpy notch and I have some blips at 2000rpm. it’s been to Bristol 3 times including to have a new transfer case, but still the same and I’m now been told it’s fine and it’s how a macan drives I can’t believe that but I’m not sure how to approach next.

I’d love to pick this up offline and compare notes if you were up for that and then maybe I should take to Exeter or go back to Bristol armed with new info?

 

[Neil1911]

You might like to give this a go first off:

PDK Reset

PDK Reset Technical Forum for the Porsche Macan - Porsche Macan Forums

www.macanforums.co.uk

 

[Guzzvaliant]

Thanks I’ll give it a try shortly.

Can’t understand why I’d need to reset though, no problems with my Boxster

 

[Neil1911]

Good luck!

 

[satusai]

Hi Satusai, this is a really interesting thread as since buying my Macan GTS in January I’ve had similar experiences. And the whole driving at slow speed and edging along in traffic has become a little bit of a nightmare. I thought it was a PDK issue but noted it might be throttle problem; the pdk keeps in 2nd nearly all the time at low speeds inc when doing walking speeds up hill which leads to lots of subsequent jumpiness and hesitation and feeling of almost stallling and recovering. In fact the whole experiences is rather jumpy notch and I have some blips at 2000rpm. it’s been to Bristol 3 times including to have a new transfer case, but still the same and I’m now been told it’s fine and it’s how a macan drives I can’t believe that but I’m not sure how to approach next.

I’d love to pick this up offline and compare notes if you were up for that and then maybe I should take to Exeter or go back to Bristol armed with new info?

Interesting to hear about this. My car was originally from Dick Lovett Swindon and Tewkesbury also looked after her but my new local Porsche Exeter have eventually fixed the problem having replaced the transfer box as well. I believe they did various process of elimination checks with the cam shaft sensors and after 3 visits she has not played up since... fingers crossed! Feel free to speak with Matthew Ash in service as he is very helpful and familiar with my car (Nick's red Macan GTS, he'll know who I am!). Good luck!

 

[malarcy]

Thanks I’ll give it a try shortly.

Can’t understand why I’d need to reset though, no problems with my Boxster

Different gearbox's as far as I know - the Macan is closer to a VW DSG box - and the "torque slip" adaptation (I think it's called) is a documented procedure for Macan after a battery swap - where it's not mentioned for the Boxster/Cayman/911 models.

 

[Guzzvaliant]

You might like to give this a go first off:

PDK Reset

PDK Reset Technical Forum for the Porsche Macan - Porsche Macan Forums

www.macanforums.co.uk

So I’ve done it and, strangely it feels a little better. I’ll see what happens. Thanks

 

[Guzzvaliant]

Interesting to hear about this. My car was originally from Dick Lovett Swindon and Tewkesbury also looked after her but my new local Porsche Exeter have eventually fixed the problem having replaced the transfer box as well. I believe they did various process of elimination checks with the cam shaft sensors and after 3 visits she has not played up since... fingers crossed! Feel free to speak with Matthew Ash in service as he is very helpful and familiar with my car (Nick's red Macan GTS, he'll know who I am!). Good luck!

Thanks for the update.

 

[Guzzvaliant]

Different gearbox's as far as I know - the Macan is closer to a VW DSG box - and the "torque slip" adaptation (I think it's called) is a documented procedure for Macan after a battery swap - where it's not mentioned for the Boxster/Cayman/911 models.

Now that is interesting, for 2 reasons: 1st I hear lots of probs with VW DSG, no idea why Porsche would not use tried and tested box?. 2nd, not sure what ‘torque slip adaption ‘ is but Preston changed battery as part of approved service alignment so I’ll look into what that is. Thanks.

 

[malarcy]

the "torque slip adaptation" ( If i remember the name correctly) is the - "run the car with loads off, then put it in gear and hold it on the brake etc. process - I think it's supposed to help the initial take off of the car by fine tuning the gearbox take up - but I don't know that for sure.