2010 CTS-V / 2015 Porsche Cayenne
I know there was a previous post regarding the maf sensor screws backing out and several reports of people using loctite etc. The reason for the screws to loosen is there is nothing for the screw to bottom out on, the only thing thats happening when you tighten it down is flexing the plastic on the maf sensor, subsequent heat cycling etc and the problem gets worse, loctite may eventually cause some issues with the fine threads. Recommending that the gap as shown in the photo (threads of screw showing) be taken up with spacer or washer(s). I'm going to take mine out shortly and remedy the situation as mine have backed off and i want the ability to pop the sensor out for cleaning etc without the hassles of loctite. Just my .02$ hopefully this will help with this issue, Troy.