05 xc70 185k:
Was idling sloppy & running with less power, showing code p0101... Since I knew a MAF replacement was immanent, I also did a glove test for pcv & found that there wasn't negative OR positive crankcase ventilation. After removing manifold & checking pcv hoses/ports/trap box & finding nothing more than oldish crackly vacuum hoses (yes, I replaced them)(yes, even the little infamous banjo bolt hose). Sooooo...I was left scratching my head & just Ended up replacing the maf. Smooth idle WITH power is back to satisfactory, (but boost doesn't seem to be optimal)(could just be me) ... And still the glove test result is "neutral"... No blowing or suction @ oil filler spout
1. Does there even need to be suction @ oil filler spout @ idle?
2. You don't suppose it's the oil pick up tube in the oil pan do you, maybe ptc or boost solenoid?
3. If anything, What should I look for or try next?
Thanks
Nathan