What is wrong with my SAAB???

[Tamas Laszlo]

Hello everyone,

I would need your ideas again...

I thought that after fixing all vacuum leak everything will be in order with my vehicle. Unfortunately not...

I have misfiring in 2nd and 3rd cylinder although DI with spark plugs and 1st lambda sensor are brand new. (same with old ones)
Beside that power is missing from the engine and fuel consumption is higher than it should be. And of course...no fault code generated for any parts.
With full throttle computer disable around 80mph/110kmh and fault light flashes. Than engine starts to shake. After 2-3 cylinder misfire fault stays in.

SO...I have no more idea... Could be the Trionic7?

[Tamas Laszlo]

Hi everybody again,
It was interesting....took a long time to solve everything.... but came back with solution.
The question is good. Chicken or egg ..which was the first.
Finally...the mentioned problem was caused by the catalytic converter...inside was melted. No idea the cause of all but it killed my turbo as well and also valve stem steal needed to be changed.
Now...seems good everything..(finger cross)
Regards to everybody Tamas