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I have read all of your posts regarding clutch issues and i have a problem with mine that i have not read on any others. I have 2300 miles on my car and have not had a single problem with my clutch until last night. For the first time last night i wanted to see what the car felt like off the line. So irevved the engine only to 3 grand and dumped the clutch. Heres were i had the problem. Seeing how i didn't really dump the clutch high in the rpm's the car didn't smoke the tires as you would expect, instead the rear wheels just skipped so i shifted into 2nd gear and floored it and the rpm's shot right up to the rev limiter and the car went nowhere. Totally smoked the clutch. It was if the clutch never engaged. Like i said i have read everyones posts and have not seen this problem listed. Has anyone here had this problem??? also has anyone here been able to launch the car from a standstill and had a success 1st and 2nd gear pull??
That sounds like a typical slipping clutch. More important,how is the clutch behavingafterwards. Does it show signs of slippage under 'normal' driving after the incident.
no not at all, thats what i don't get. it wasperfectly fine afterword. i even tried a third gear pull from a dead stop to see if the clutch would give out which it should in that kind of test and it didn't. I've had plenty of blown clutches in my other cars but i am totally baffled by this.
Was PSM engaged? My understanding is that PSM will 'catch' the clutch.
PSM - Porsche Stability Management
While it can’t overcome the laws of physics, the revolutionary Porsche Stability Management (PSM) system does lend an added degree of balance and control to the Cayman’s mid-engine driving dynamics, inspiring surefooted confidence in corners and extreme situations.
A standard feature on the Cayman and Cayman S, PSM continuously monitors steering input, road speed, yaw velocity and lateral acceleration to calculate the actual direction of travel. If the car begins to steer off line, PSM instantly intervenes with precision brake inputs on individual wheels to help bring the car back onto the driver’s intended path.
If braking alone isn’t enough to correct the vehicle’s cornering line, PSM then calls on the Cayman’s engine management system, adjusting engine output as needed to help stabilize handling. PSM can also compensate in an instant for mid-corner changes in load resulting from deceleration or braking. When Sport mode is selected with the optional Sport Chrono Package, PSM’s threshold for intervention is raised, allowing for greater driver involvement. If you prefer driving without automatic PSM assistance, the system can be set to standby at any time. In this case, it will only intervene under heavy braking, where both front wheels exceed the ABS threshold.
For all of its technical ability, PSM goes virtually unnoticed in everyday driving situations, preserving the Cayman’s natural agility.
Does sound like it grabbed the clutch. Are you it engaged when you shifted, and if so it didn't pop out of gear? A good jossle of the tranny like that can pop it out of egear. Either way, pretty odd.
Oh it grabbed the clutch. It basically was like this..... Grabbed 2nd gear floored it, rpm shot up to 7200 so i let off to 5000 and then gave it more gas and straight back to 7200. At first i thought maybe i was smoking the tires and i didnt realize it was the clutch until i noticed i didn't see any tire smoke and then the smell of the clutch.After that i drove around and it was fine. I didn't try launching again but regular driving was ok. I really think the clutch just didn't grab but that is really unusual especially in a Porsche. I mean these car are meant to be driven hard and i cant even grab 2nd gear?!?! Somethings wrong.
Yea, I can only theorize as I'm not a porsche mechanic. If it was only that instant , and 2nd gear was engaged at the tranny (not just because the shifter felt engaged) perhaps there is an override of sorts I haven't heard of. It really just seems like it wasn't engaged, free spinning rpms with no clutch squeal or chatter.... Perhaps the clutch got glazed... hard to say. I've killed a couple clutches in my day, but the only time I have experienced what you describe it do to the tranny not engaging, on other cars with a touchy tranny not having the right sync speeds can do that.
Yeah i hear ya azcay, it just doest make sense. Well I'm going to try it one more time to see what happens and if it does it again I'm just going to have to bring it back to the dealer again (dam German cars)
I had the same thing happen today when I turned off PSM and tried to take of quickly. I never do that, but wanted to see how the car went off the line. I too thought the wheels where spinning as I went into 2nd gear from first but then realised that the clutch was spinning. I had lots of smoke a burning smell all the way home. The car drove OK when I was gentle on it, but you would think you would be able to turn of PSM and get the wheels to spin in a Porsche??? Hopefully the clutch is OK. Kenny, whats the latest on your issue?
PSM - Porsche Stability Management
While it can’t overcome the laws of physics, the revolutionary Porsche Stability Management (PSM) system does lend an added degree of balance and control to the Cayman’s mid-engine driving dynamics, inspiring surefooted confidence in corners and extreme situations.
A standard feature on the Cayman and Cayman S, PSM continuously monitors steering input, road speed, yaw velocity and lateral acceleration to calculate the actual direction of travel. If the car begins to steer off line, PSM instantly intervenes with precision brake inputs on individual wheels to help bring the car back onto the driver’s intended path.
If braking alone isn’t enough to correct the vehicle’s cornering line, PSM then calls on the Cayman’s engine management system, adjusting engine output as needed to help stabilize handling. PSM can also compensate in an instant for mid-corner changes in load resulting from deceleration or braking. When Sport mode is selected with the optional Sport Chrono Package, PSM’s threshold for intervention is raised, allowing for greater driver involvement. If you prefer driving without automatic PSM assistance, the system can be set to standby at any time. In this case, it will only intervene under heavy braking, where both front wheels exceed the ABS threshold.
For all of its technical ability, PSM goes virtually unnoticed in everyday driving situations, preserving the Cayman’s natural agility.
I just gave my clutch a bit of a test, as I was worried after the misshap arlier today. The clutch now seems fine. it engages a few inches off the floor, gear changes are easy, and when I try to take off in a high gear and plant my foot i either take off very slowly with a labouring engine or the car stalls. I turned of PSM and dropped the clutch and gave it enough revs to get a slight wheel spin. I was pretty worried as there was a lot of smoke earlier today and a bad buring smell. i do hope no damage has been done.
Still, what happened earlier today was very stange. I had been out of the car for 25 mins before take-off, so perhaps the clutch was just cold causing it to slip? Or perhaps there was some oil somewhere it shouldn't have been? Come to think if it, this has happened once before. Probably the only two times I have turned of PSM and really tried to take off quickly with a few revs. Both times I thought the wheels were spinning when in actual fact it was the clutch.
I have always been pretty careful with the clutch and gearbox and even on track days usually let the clutch fully engage before I plant my foot.
I have never had this in any other car so it is a little strange. Hopefully I am not back here writing about further problems with the clutch anytime soon!
Cheers
DT
PSM - Porsche Stability Management
While it can’t overcome the laws of physics, the revolutionary Porsche Stability Management (PSM) system does lend an added degree of balance and control to the Cayman’s mid-engine driving dynamics, inspiring surefooted confidence in corners and extreme situations.
A standard feature on the Cayman and Cayman S, PSM continuously monitors steering input, road speed, yaw velocity and lateral acceleration to calculate the actual direction of travel. If the car begins to steer off line, PSM instantly intervenes with precision brake inputs on individual wheels to help bring the car back onto the driver’s intended path.
If braking alone isn’t enough to correct the vehicle’s cornering line, PSM then calls on the Cayman’s engine management system, adjusting engine output as needed to help stabilize handling. PSM can also compensate in an instant for mid-corner changes in load resulting from deceleration or braking. When Sport mode is selected with the optional Sport Chrono Package, PSM’s threshold for intervention is raised, allowing for greater driver involvement. If you prefer driving without automatic PSM assistance, the system can be set to standby at any time. In this case, it will only intervene under heavy braking, where both front wheels exceed the ABS threshold.
For all of its technical ability, PSM goes virtually unnoticed in everyday driving situations, preserving the Cayman’s natural agility.
I got your PM and i did reply but i think we should continue this conversation on the board so other members can read and determine if they have the same problem as we do. I can sit here and type my story about my problem but it is identical to yours. I never have any problems during normal daily driving even when i drive the car hard but i cant get it to launch without some kind of clutch slip or burn. I know these cars are not drag cars and believe me thats not what I'm trying to do but for got sake i cant even get the car off the line to try and get a 0-60 time.
What you did is called 'glazing' the clutch. I've done it on several cars, and the common diagnostic factor is the stench of burned clutch following abrupt engagement at high RPM. It's basically like getting pad fade when braking. The pads (or in this case clutch material) get too hot and burn, presumably forming a layer of gas betweent the pads and the rotor (or flywheel) and the friction coefficient drops to near zero. I've had no known long-term consequences but not something you'd want to do every day as it will eventually damage the flywheel and clutch disk.
I was going to sign in tonight and type in the same thing. This has happened to me twice when I tried to do a mild clutch dump. I did kill it one time at the next light but it started right up and took off like nothing was wrong. I have nearl 6000 miles on my car and I swear that its gotten more sluggish so I was trying to fool myself into believing it was just me, but now its nothing like what it was when it was new. Im thinking of unhooking the battery and resetting the computer to see if this makes things better.
