Over Rev report query - 997 gts

[Shiverman]

Hi All
I am in the process of buying a really nicely spec'd GTS from an OPC and they have today sent me details of the over revs.

About half way down the report (between ignition in Rev range 2 & 3) it says

M120_Misfire counter for every ignition 3307

Does anyone have any idea what this code means and whether I should be concerned?

OPC says they have serviced the car and it is running within normal parameters with no fault codes. It has passed the inspection and will come with 2 year porsche warranty.

For information the report shows 360 ignitions in Rev range 1 and no incursions in any of the other ranges.

Car is very low mileage (5k) and with fantastic options including carbon fibre bucket seats, alcantara with extended leather, Auto dimming mirrors and rain sensors, Bose, Clear tail lights, PCM with Nav, B-tooth and I-pod connection, Park Assist, Rear Seats, Colour coded side skirts, front and rear spoiler lip etc. Sport Chrono, And Sports shifter.

These cars seem to be holding their money (read - hope I haven't overpaid!) and with this spec,mileage and condition I think will be hard to find elsewhere. I want to go into this with my eyes wide open so any pointers or help would be gratefully received.

Thanks a lot.

[Shiverman]

IMIA said:

get it bought rapidly. not many with that spec and any rr activity below level 4 irrelevant

Deposit is down & I'm supposed to be collecting on Sat so I don't think I'll get gazumped. Just concerned about 'misfires' as I've not seen this on a Rev range report before.

[Shiverman]

IMIA said:

two year warranty so not an issue - have you asked them?

I figured 2 years warranty so I am covered but would like to know what 3307 misfires means. Coil packs? Other problems?

The OPC have said

The misfire counter is info correlated by the control unit and is only monitored info. The way the info is gathered changes on VALS and the form it is stored so it cannot be manipulated (hence the misfire counter is in the middle of the over rev info). There are no fault codes so the engine is running within it normal parameters.

Which doesn't mean anything to me - lol!

[Shiverman]

IMIA said:

ask to speak to a tech. thats just unintelligible drivel!

That was from the workshop controller!

Think I will ring a couple of indies I've used and see if they can shed any light.

[Shiverman]

thegoose said:

Could a failing/failed coil pack cause the misfires? If so it's not really a worry, 3,000 ignitions is 1,000 revolutions of the engine, so not many seconds of misfiriness in the scheme of things.

So one minute of misfires at tickover? And a lot less time if being driven. Doesn't seem so bad when you explain it that way. Thanks for your input Goose.

[Shiverman]

Hi Stewy - yes this was the OPC Swindon car. Wasn't actually planning on buying, but once I saw it realised I couldn't pass it by with that spec and mileage. I hope you find your ideal one soon - they seem to be great cars.

Hi TheGoose - have rung a specialist and they are of the opinion that even things like trying to start the car on a flat battery can cause the misfires which are then logged in the ECU. Car was owned by a collector so this is possible. Their feeling from them was if it has been serviced and passes Porsche criteria for warranty then they would have no concerns with this.

Think I now need to start to get excited about Saturday!!

[Shiverman]

red_slr said:

Could it be it was out of fuel and someone tried cranking it?
Or perhaps if a plug lead was off or something for a short time during a service?
As its only a few thousand reports I wouldn't worry too much. If it launches itself you will be covered.

That's exactly the thoughts of the specialist I called. http://www.pistonheads.com/gassing/imgs/10.gif

As the previous poster said I need to start getting excited and not worrying!

Thanks everyone for your contributions and I'll post some pictures up once I collect it.

[Shiverman]

Grrrrrr. Pick up delayed by a week due to cock up from the OPC with plate transfers. Pics will be delayed folks.

Chris - I had read the posts on the sharkwerks and its definitely on my list. I think I'm going enjoy the car first for a few weeks and then add it once Im over the initial excitement & want more. Can you PM me a price when you get the chance?

[Shiverman]

m33ufo said:

Do consider that this will invalidate your warranty.

I think Chris has covered this in the Sharkwerks post. If the problem is caused by the exhaust then yes it would invalidate the warranty, and I think I would need to discuss with the OPC as some seem more sympathetic than others to bits being changed Maybe mine will be more forgiving as they are mucking me around (fat chance!). I know it's a risk and I'll have to weigh that up at the time. I know that if I want to renew the warranty it would have to go back to standard.

[Shiverman]

Still no date on a pick up as the OPC is having issues not having the V5 back from Swansea. Hoping for a collection this weeknd but not guaranteed yet. Genuinely frustrated as I currently have the time to drive it and that won't last.

[Shiverman]

Well Guys, Friday was the happy day and I finally collected my GTS.

As I was waiting so long I decided to get Justin at Exclusive Car Care to detail the car. He visited it at the OPC showroom and we agreed a 2-stage polish and to then finish it with Gtechnic Crystal Seurm for a long lasting shine. He did a fantastic job and all I can say is WOW the car looks better than new. No swirls on the paint and a flawless finish with some seriously gleaming wheels.

200 miles in so far and I'm loving it. The manual gearbox change is so crisp and the engine so free revving.

The car seems slower with PSE switched on, but maybe thats just me? Anyway a few more runs and I'll hopefully know more about this. Does anyone else with PSE have any thoughts or comments?

Anyway, spec and the all important pictures.

White GTS 2011, 4,800 miles
Carbon Fibre backed bucket seats
Sports Short Shift
Sports chrono plus
Colour coded side skirts and front/rear splitters
Clear tail lights
Auto dimming rear view mirrors with rain sensor
Parking sensors
Rear seats (daughter is very happy already after not being able to travel in my Cayman)
Extended leather to dash and doors and extended alcantara
Porsche logo on storage lid
PCM 3 (with full postcode upgrade)
Bose
Bluetooth
iPod/Aux connectivity
Grey top tint
Full 4-year service and 2 years Porsche warranty.

Edited by Shiverman on Sunday 3rd May 09:11

[Shiverman]

Only showing one image so here's a few more

[Shiverman]

[Shiverman]

[Shiverman]

Thanks Guys - I promise I will enjoy it!!!

Think I'm going to take it for it's first rain drive shortly.

[Shiverman]

911Gary said:

We recently had such a missfire code,the car eventually had a variocam issue,check cam angle sensor output on live feed (only on one bank as UK car US ROW cars have one on each bank dont know why!)

Hi Gary - that's interesting and the first response from anyone on and off the forum to this question. Were there any other symptoms that pointed to checking the variocam?

[Shiverman]

911Gary said:

We recently had such a missfire code,the car eventually had a variocam issue,check cam angle sensor output on live feed (only on one bank as UK car US ROW cars have one on each bank dont know why!)

Hi Gary - that's interesting and the first response from anyone on and off the forum to this question. Were there any other symptoms that pointed to checking the variocam?

[Shiverman]

m33ufo said:

Yes, they're a silly price. Just fit them, took all of 5 minutes. I know it's barely noticeable but the chrome just didn't work for me.

TBH chrome hadn't really bothered me but maybe it will do now!! Look good in white but I can't see me making the change.

[Shiverman]

LF11 said:

That is one fantastic looking GTS. I have a white one as well but that is probably the perfect spec if I could go back in time. With that kind of mileage it's like a new car?

Enjoy!

Thanks LF11. That why I couldn't really pass it by when I saw it. Am loving it so far (500 miles in) and the seats are so comfy if at times a touch awkward getting in/out of. Very special car imo.