misfires-yup some more questions

[bwestfall]

2006 porsche 997 c2, 44,000km = 27500mi

I put the car on the road last week (after being parked for a few months-properly winterized-oil changed, fuel stabalizer, battery maintainer all winter) and has ran gret for a week

Here is what happened on my way down to a meeting last night...

It was driving fine, then I put my foot in it a little bit and noticed a change in the engine a slight hesitation, rough running then the check engine light came on - solid then blinking

I scanned it after my meeting and got this

P0300 Factory Fault code 507 misfire detection

P0301 FFC 508 misfire cylinder 1

P0305 FFC 512 misfire cylinder 5

P0303 FFC 510 misfire cylinder 3

P0304 FFC 511 misfire cylinder 4

Also found this PAS 8004 supply voltage clamp.

On the way home, the car ran a bit rough could feel the engine vibration in the seat a bit - I checked with my mechanic if it was ok to limp it home

No Smoke, no oil leeks. Just seems wierd as the cylinders affected are in banks 1 and 2

What do you think coils/plugs/MAS/bad gas - just praying that I am not in line for engine failure

Also - am I able to drive the 10 km to my mechanics like this?

THanks in advance - brent

Edited April 8, 2011 by bwestfall

[wvicary]

Is this the same tank of fuel it was stored with or fresh petrol? If you clear the codes do any of them return? It's safe to drive so long as the check engine light is not flashing and the engine sounds ok but this problem must be addressed asap.

[bwestfall]

Is this the same tank of fuel it was stored with or fresh petrol? If you clear the codes do any of them return? It's safe to drive so long as the check engine light is not flashing and the engine sounds ok but this problem must be addressed asap.

Yes - same tank of gas - but it did have the fuel stabalizer. reset the codes and they come back. when driving, the light will be solid - get a beep on the dash and the check engine flashes a few times then goes solid again.

[PAULSPEED]

A mechanic told me that these cars do not like to sit around.

I would run your old gas till your about 1/4 tank. Then fill up with

new gas. Run the car till 1/2 tank. Clear the codes. Warm up the car

and then get on it.

Paul

[bwestfall]

Did the plugs and coils yesterday - runs perfect now - had 3 Kacked coils...

thanks for the input everyone

[phillipj]

Great news! Glad you got it sorted..