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j141

Issue, possible clutch failure?

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Hi All

I am having an issue with my Evora S, at 70ish and in 6th if I accelerate the revs seem to jump up quickly but the car doesn't respond as quickly, no noise or anything but it feels like something is slipping so the only thing I can think is the sc belt or clutch, the engine bay did smell ever so slightly clutchy any ideas?

Also interestingly only seems to happen in sports mode 🤔

Edited by j141

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Certainly sounds like the clutch slipping. 

The easy way to test is put the car in 6th gear at 30-40mph (the slower the better) then floor it. If the revs rise quickly without the speed increasing much, you’ll know that it’s time for a new clutch. 

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Thanks 

1 hour ago, Bravo73 said:

Certainly sounds like the clutch slipping. 

The easy way to test is put the car in 6th gear at 30-40mph (the slower the better) then floor it. If the revs rise quickly without the speed increasing much, you’ll know that it’s time for a new clutch. 

Thanks I will give it a try but I really hope not!

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One clutch failure mode is for the spring plate to lose spring tension. This causes the friction between it, the friction plate and the flywheel to be insufficient to bind them together.  When it first starts to happen, the clutch will slip when the car is under significant load at an rpm that is close to peak torque.  I’m not sure what this figure is on an S but you might need to be going 60-70mph in 4th or 5th when you floor it for it to happen (at 30-40mph the engine will be little over 1000rpm and won’t be developing peak torque in 6th).

I had a Maserati 3200gt some years ago that developed this fault and I first noticed it when going up up a steep hill along the coast when I accelerated hard in 3rd.  It got steadily worse and eventually started to slip under more moderate use but it sounds like you might have the same problem.

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I could not replicate it again which is odd,, I am going to have to try again and keep an eye on it.

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Hi James 

I hate to be the bearer of bad news but my 2011 Evora S is in at Leven Lotus for exactly the same thing, unfortunately for me it is the clutch, my one had exactly the same symptoms, Mines has only done 25,000 miles not sure what yours has done. The big problem is Lotus don't have spares, mines has been of the road now for six weeks. Major Job, Whole back end off.

Please let me know how you get on.

IMG_6069.thumb.jpg.17578a194947e08ca32a49bd4f115ec5.jpg

Johnny

Edited by Johnny5
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My Evora N/A had covered only 9'000 miles after having a new clutch fitted and the clutch failed ,I was extremely surprised that LOTUS wouldn't cover it under warranty ,so it was with some regret that I part exchanged it for a BMW 640i the labour required to change the clutch is  over £3,000  ,I have owned eight different LOTUS cars and I think that was my last one .A shame I know but how ridiculous for the clutch to fail after only 9,000 miles

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Hi Roan,

Did you have the Flywheel replaced?

Johnny

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I am not sure Johny ,I think when I purchased it back in 2014 everything relating to the clutch was changed ,I think the reason why LOTUS would not pay for it was I had it fitted almost 4 years ago when I purchased it but that does not change the fact that the clutch had only covered 9,000 miles !!

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11 minutes ago, hatters said:

My Evora N/A had covered only 9'000 miles after having a new clutch fitted and the clutch failed ,I was extremely surprised that LOTUS wouldn't cover it under warranty ,

9k miles and 4 years, wasn’t it?

Why do you (still) think that a warranty should have applied? 

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The only reason was the clutch had only covered 9,000 miles ,I spent all my army career as an automotive vehicle mechanic and I know regardless what vehicle it is the clutch should last way more than 9,000 miles 

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A clutch can wear out a lot quicker than that depending on driving 'style'... it could also last 100,000 plus miles as well... 

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1 hour ago, hatters said:

The only reason was the clutch had only covered 9,000 miles ,I spent all my army career as an automotive vehicle mechanic and I know regardless what vehicle it is the clutch should last way more than 9,000 miles 

Warranties are usually mileage and time bound. You were OK on mileage but failed on time so computer said no. End of. Also was the clutch replaced by previous owner and used for anytime before you got the car? If so you have no idea how it was used.

Total cost should have been £3k not just labour, but also you can get it done for almost half that if you know where to go.

I bet if your tyres were 10 years old but still had full tread on them as low use you'd expect them replaced for free if they developed a flat spot from sitting in one spot too long  Just following your logic re the clutch.

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@j141 does sound like the clutch is slipping.  There are a few independent Lotus specialists that should be able to do the job for less than an official Lotus service centre.  Not sure where you are based by try Hangar111 if they are nearby.

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Thanks Everyone, its not looking too promising then :(

@Johnny5 I hope you get sorted soon!

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I've just checked Lotus Connect and driven plates and covers are available. 

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10 hours ago, electro_boy said:

@j141 does sound like the clutch is slipping.  There are a few independent Lotus specialists that should be able to do the job for less than an official Lotus service centre.  Not sure where you are based by try Hangar111 if they are nearby.

A quick sleuth suggests close to Heathrow.

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1 minute ago, mik said:

A quick sleuth suggests close to Heathrow.

Midlands 👍

 

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1 hour ago, j141 said:

Midlands 👍

 

A couple of good places you could maybe try if near Burton on Trent...

Paul Shipley at PJS Sportscars who are a Lotus approved service centre (and where I take my Evora).

Or

Gav at Unit 4 who is a very well respected independent.

 

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Well I have done over 400 miles since the incident and I can not replicate it again, I wonder if a sensor or the ECU was having a wobbly so I will just have to keep an eye on it.

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