997.2 Engine problem

[Knut SSP]

I have a problem with the 997.2 3,6 engine i get fault code 0300.0304.0305.0306. If i delete fault code when engine is cold, it works just fine until it gets hot. The problem only occurs when the engine runs at idling speed 650 to 700 rpm. If i carefully touch the throttle pedal so the idle speed rises to 750 rpm, the car will work perfectly. 

 

I have innstaled new spark plugs, Lambda, MAF and coils. 

[Loren]

Any damage/wear to the wires?

Try disconnecting the MAF for a short period. You will get a MAF fault but do the misfires still happen?

[964hans]

Hello Knut SSP,

 

As you can read in the attachment error 0300 shows the total amount of misfires on all 6 cylinders

 

Error 0301 up to 0306 shows misfires in cylinder 1 up to 6.

 

As you have errors in cylinders 4 up to 6 means there is an common problem for this bank (MAF, O2 sensor.....) For faultfinding you can swap these sensors with the sensor from the other bank.

 

An other issue could be a vacuum leak.

 

Regards

Hans

0300.pdf