I want to thank all of you for the prompt advice. I'll torque the manifold bolts and reset the diagnostic. If the same code returns, then my fate is set. I'll check the knock sensor connection and replace the sensors if needed. I'm just dreading the fact that I have to remove and then reinstall the ...

This is my first post so please forgive me if I don't provide enough info. My 94 850 is normally aspirated with 122k miles. Just finished timing belt/water pump/pcv system/rear main seal work. All parts purchased from FCP. Idling, car sounds great but sluggish when accelerating. A-6 diagnostic socke...