Check Engine and Idle Troubles

[poleposition]

Last night, out of the blue my 2004 Cayenne Turbo, decided to light up the Check Engine, right after I've noticed a strange vibration and shaking of the engine at Idle speed. :lightbulb:

Also, that shaking is present when the car is moving off in D, without acceleration.

When driving normally, everything works fine, acceleration etc. Just when engine is idling, it shakes strangely.

Did this ever happened to someone else ?

@StealthTT, if you are reading this, I will give you a call next week, and maybe, if you have some spare time, we can check this with your tester :)

Edited October 17, 2010 by poleposition

[Loren]

Check the fault codes - it could be as simple as ignition coil packs.

[poleposition]

Update, still haven't found the time to check the fault code.

BUT:

The idle vibration disappeared, everything runs ok.

Still the CE light remained on...

Maybe bad gasoline ? <_<

[wvicary]

Do not drive the vehicle if the check engine light is flashing. You really need to find the cause of your faults.

[Mr. Haney]

Do not drive the vehicle if the check engine light is flashing. You really need to find the cause of your faults.

I was under the impression the check engine light only related to emissions performance codes? Doesnt the dash warning display deal with engine performance related malfunctions? I got a CEL for no reason at all this morn. and the vehicle was running superbly. I removed and re-tightened the gas cap and pulled fuses 9,10,11,& 15 in the underhood fuse panel. It went away and never came back-

[poleposition]

Do not drive the vehicle if the check engine light is flashing. You really need to find the cause of your faults.

Of course, it says so in the manual, but in my case, the CE is not flashing.