981 Box - PDK question
981 Box - PDK question
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Jamassey

Original Poster:

584 posts

264 months

Wednesday 10th April 2019
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Hi All

I've just bought a 2015 Boxster 981 with PDK. Love the car.

I've just driven from Surrey to Cornwall and had a chance to blow the cobwebs out, cracking drive.

I have an anomaly however and wondered if the below is normal (this is my 3rd Porker, never had this on the others).

In 7th Gear (and only in 7th Gear) when I take my foot off the accelerator the revs go back to idle. I can be pulling at 5k and take my foot off the accelerator because I can see something in the distance, the car stops pulling (obvs) but the revs go down to less than 1k. It's like the clutch is pulled in immediately.

A lot of clutch smell when I got to Cornwall - wondering if this is a smart fuel saving thing from Porsche, or something I need to have checked out? Thx - J.

SnowySpeeder

230 posts

265 months

Wednesday 10th April 2019
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That is the "coasting" feature of standard driving mode - for fuel saving as you guessed.

It switches off when you select Sport smile

frozen-in-wiltshire

152 posts

108 months

Wednesday 10th April 2019
quotequote all

yes in 7th this is normal - it's called sailing in the book. with pdk and auto-start-stop 'on' the car will disengage clutch when there is sufficient momentum to save fuel and coast along or 'sail' until some power needed to maintain speed then the clutch re-engages. when the clutch disengages the rev counter drops to idle.

you should have an auto-start-stop on/off button somewhere - the 911 does - which stops stop-start engine shutdowns and also turns off sailing. in sport mode it's off too and no 7th gear either.

personally I find the start-stop thing a PITA so keep mine turned off almost all the time - only turn it on for long motorway journeys to use sailing sometimes.

frozen-in-wiltshire

152 posts

108 months

Wednesday 10th April 2019
quotequote all
p.s. clutch smell isn't normal - not sure what that might be - pdk shouldnt be making a smell at all. would get that checked out - but unrelated to sailing I think.

gwsinc

321 posts

104 months

Wednesday 10th April 2019
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Its probably normal hot Porsche smell rather than clutch. It’s a fairly distinctive slightly oily hot-but-not-burning smell.

I was worried about this too at first but soon got used to it.

Chubbyross

4,867 posts

109 months

Wednesday 10th April 2019
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If you’ve had a long spirited run the smell is probably normal. To me it smells slightly of burnt rubber. Usual Porsche smell.

Jamassey

Original Poster:

584 posts

264 months

Thursday 11th April 2019
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Thank you all very much! I'm glad it's a feature and you're right the burning smell was exactly as you've described - glad it's not clutch.

Big brains in the this forum, great help.