Cayenne Turbo Questions

[poleposition]

Hi guys, this would be my first topic here, as I just bought a 2005 Cayenne Turbo.

I drove a BMW M6 up untill now, but I've switched to a bigger car, as I have a new born son :)

The M6, will be replaced by a Porsche 911 Turbo or a GT2 next year.

Anyway, I have a couple of questions, so here I go:

1. CEL just came on, but the car runs perfect.

2. What should be the signs of worn Coils and Plugs ?

3. Besides the usual service (oil, filters, transmission fluids, coolant, brake pads), what should I further check/change at the Porsche Dealer ?

4. Fuel consumption is about 30 liters / 100 km ? What's up with that ? that's the same as the M6...

I am asking about the coils etc, because they are charging 1000 EUROS for the 8 coils and 300 EUROS for the plugs. Only the cost of the parts. So about 1500 EUR to change the coils and plugs.

If it is not necessary, of course I won't change them yet, but how to tell when they are worn... ?

Thank's

[wvicary]

1- CEL can be set off by many reasons, safe to drive unless the light is flashing.

2-Misfire,poor engine performance,flashing CEL are signs of ignition coil faults.

3-Just follow the recommended schedule in the booklet.

4-A CEL will affect fuel consumption. You need to have the code read out to direct the repair.

I think that is way too much money for coils/plug replacement. Search for a local indy garage who is familiar with the Cayenne or better yet just replace the units yourself. There are a few topics on this forum about the procedure and it's very easy to complete if you have the correct tools.

[poleposition]

Thank you :)

Well, I am not a very "technical" person, so changing them myself, is out of the question :) Yes, I will probably buy/change them, at some other garage in the end.

Any other suggestions on Cayenne Turbo ? things to look out for etc ?

Edited December 15, 2009 by poleposition

[poleposition]

One more thing...

Is it ok to purchase after-market coils ? BERU I believe...

And what brand of spark plugs do you suggest ? NGK, or DENSO maybe ?

If I chose to do this at the Porsche dealer, it takes about one week just to order... I could have them changed (coils and plugs) in 24 hours - at an indy garage - but not OEM and I am supposed to leave for Austria.

What do you think ? should I go for BERU coils and NGK Plugs ?

PS: the coils don't need to be replaced (engine works perfect), it is just my desire to do so since the car was bought SH... just to be sure I won't encounter some troubles in my trip.

PS2: My location is Europe/Romania - Bucharest

Edited December 15, 2009 by poleposition

[wvicary]

The coils do have a high failure rate but I wouldn't replace them unless a problem occurs. I would only use OEM parts and think Bosch makes both the coils and spark plugs. Have the water pump and coolant pipes under the intake manifold inspected. They are both known issues can leave you stranded on the side of the road. The driveshaft centre brng is also a cause for concern and must be replaced as a complete assembly with the driveshaft aka a carden shaft.

[poleposition]

Got it, since tommorow I will leave it at the dealer, I will also mention what you suggested.

Thak you.