109K miles and started having rough idle, stalling , etc. Threw P0101 and P0170 (MAF and Fuel trim, right). Unplugged the MAF and idle stabilized and car runs "OK". Replaced the MAF, cleared the code, and ran fine for 10 miles. Threw P0101 and P0170 again. Unplugged the MAF and again, ran OK. Installed 2nd MAF (warranty), ran fine for about ten miles and after shutting off engine, threw same codes again, runs ROUGH, stalls. Unplugged the MAF and runs OK. ????? Also noticed the PCV tube from the oil collector to the intake was broken, so temp plugged that thinking vacuum leak. Will replace that today. Help!

 

You should check the pcv system too while you are at it. That might become an issue as well not just the top hose.