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Base Cayman 982 2018 Turbo Replacement Required

JohnCRS

JohnCRS

PCGB Member
Member
Thanks for posting Charlie. It is a known issue and I believe it is the actuator that fails; water gets at it and it rusts. The policy is to replace the whole turbo unit as there has been a modification to the turbo housing to protect the actuator in future. Once fixed, it should have an extended life span. As you say, good to have the warranty.

 
My 718 Cayman (2018) was in for MOT in June and I was informed the attenuator on turbo may be 'sticking' and/or turbo may need to be replaced. At that point I'd not noticed any loss of power. Preston OPC confirmed diagnosis this week - new turbo required. Car still with them awaiting parts delivery and fitting. On modern cars I'd expect that system to last minimum of 100k. Mine has full OPC service history, covered 17,500 and driven regularly. They confirmed it was nothing to do with driving style etc. Noticed on another forum that two base 718 owners had same issue. Both 2019 models. Wondered whether anyone else on this Forum has suffered same failure? Any thoughts or advice? I'm also pleased I decided to extend my OPC warranty in June otherwise a big bill pending.
 
As an aside, my neighbour has a 16reg 991.2 and at his recent 6 year service the OPC highlighted the seized actuator and quoted him £6000 to replace! He took it to our local Porsche independent and they freed it for £90!!

 
Hi, Thanks for your reply. I did try to e mail you before posting on this forum but my home pc set up not helpful. I will have a conversation about the failure with Preston OPC (generally find them helpful) when it's eventually fixed. I'll pass onto you any thoughts and views they have that may be helpful on this issue for our Register.

 
JohnCRS said:
Thanks for posting Charlie. It is a known issue and I believe it is the actuator that fails; water gets at it and it rusts. The policy is to replace the whole turbo unit as there has been a modification to the turbo housing to protect the actuator in future. Once fixed, it should have an extended life span. As you say, good to have the warranty.
Click to expand...
Hi, Thanks for your reply. I did try to e mail you before posting on this forum but my home pc set up not helpful. I will have a conversation about the failure with Preston OPC (generally find them helpful) when it's eventually fixed. I'll pass onto you any thoughts and views they have that may be helpful on this issue for our Register.

 
Motorhead said:
Charlie,

For reference, have a look at this recent post:

https://www.porscheclubgb.com/forum/tm.aspx?m=1060086

Hopefully the replacement turbo will fix the problem but I note that the OP in the above reckons that he’s planning to try using full performance on a regular basis to exercise the actuator. Sounds like a good plan! [;)]

Jeff
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Hi Jeff, Thanks for your reply. I asked OPC whether my 'sedate lol' driving style may have contributed. They said no and although fell short of confirming it's a design issue that was an inference. I have decided once repaired to drive it like I stole it more often. It seems the S and GTS turbo doesn't typically have the issue.

 
Ha,ha! Yes Charlie, I think some more spirited driving is in order! The 2.5L engine in the S and GTS has a different turbo with variable inlet guide vanes, so perhaps the waste-gate actuator is positioned differently which might explain why they don’t experience the issue? Jeff

 
Interesting. I have a 2019 Base Cayman too, and for a while I though I'd noticed a bit of a drop in performance however it doesn't seem to be as noticeable recently. However this seemed from more of a standstill rather than during climbing the rev range.

How did the OPC pick it up on the MOT? And have you noticed an issue after they mentioned it, any pointers?

My OPC is also Preston!

 
mattsmo818 said:
Interesting. I have a 2019 Base Cayman too, and for a while I though I'd noticed a bit of a drop in performance however it doesn't seem to be as noticeable recently. However this seemed from more of a standstill rather than during climbing the rev range.

How did the OPC pick it up on the MOT? And have you noticed an issue after they mentioned it, any pointers?

My OPC is also Preston!
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Hi, I'm guessing that when doing the MOT they plugged into their diagnostic system and it showed a loss of power. I'll ask when I collect it and add to post. Did I notice it after diagnosis - probably but subtle. Pushed it hard a twice before it went in last week and above say 4k+ revs there seemed to be a modest fall off in power/acceleration. If you want to test yours - maybe push hard with Boost on display but also see how it feels physically - the perceived rate of power/acceleration. I still think they're great cars but the other consideration I'd add is to extend OPC warranty as and when it's required. Previously this required a 110 point check but if going from one that's live before it expires then don't need the check. Preston were helpful with that. Have to seen the very helpful and informative post above from John the Cayman Register Sec?

 
Took it out last night and think it seems fine. Boost up to 0.8/1 bar under very hard acceleration. No dip in power. I'll keep an eye on it.

Luckily mine was an Approved used, so i've got warranty till March 24 at which point i'll be extending.

Let me know what Preston say when you collect. Mine was in for MOT and Service in March so hoping this issue would have been checked.

 
My original 2.0 had this issue and I freed it up myself. First indications of a sticking actuator is little to no boost on hard acceleration. I was getting no more than 5psi. The problem stems from the location of the turbo and actuator on the 2.0 which is just under the belly pan. On the 2.5, it is further up onto the engine bay so isn't exposed to the elements as much.

Here are a couple of links to the 718 forum that goes through the symptoms and remedies.

https://www.718forum.com/threads/no-boost-pressure-until-restarting-the-car.20414/

https://www.718forum.com/threads/base-718-turbo-failure.20033/

Preston OPC are very good (they are also mine).

Dan

 
Cheers, i'll have a read too.

I think you were at the Concours on Saturday at South Lakes? I was going to come across and see you however with everything going on I missed you.

 
mattsmo818 said:
Took it out last night and think it seems fine. Boost up to 0.8/1 bar under very hard acceleration. No dip in power. I'll keep an eye on it.

Luckily mine was an Approved used, so i've got warranty till March 24 at which point i'll be extending.

Let me know what Preston say when you collect. Mine was in for MOT and Service in March so hoping this issue would have been checked.
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That's good. I spoke on phone with Preston today. Although not part of MOT they conducted a systems diagnosis as part of what I'd call 'value added'. It flagged up the turbo issue but this wasn't absolutely confirmed until they had car in to specifically look at issue. My Approved warranty was still in place when fault was discovered but I have in any event extended it for a further 12 months. They've had the car eight days now. Hopefully ready tomorrow. From discussion it seems to be a significant piece of work and will ask what it entailed when see them tomorrow.

 
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