986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Diagnostic help needed! Hot film MAF and low oxygen adaptation.

Danimal · 04-17-2024, 09:11 PM

Another update. I've taken the car on 5-6 runs and the check engine light hasn't come back. However, I'm experiencing a slightly rough idle and slight hesitation around 4k (almost feels like power surges). Looking around I found someone on the pelican forums with the same issues.

https://forums.pelicanparts.com/boxster-cayman-forum/600891-bought-durametric-but-i-need-help-understanding-numbers.html

I checked my fuel trims and they are almost identical to what this person had. The fix for them was a new MAF. I'm going to order one and give it a shot.

Note: I also did the oil cap test. I took it off with the car idling. I was able to remove it no problem and the car immediately began to run poorly....so I think the crankcase vacuum is okay.

04-17-2024, 09:11 PM	#23
Danimal Registered User Join Date: May 2023 Location: Oakland, CA Posts: 159	Another update. I've taken the car on 5-6 runs and the check engine light hasn't come back. However, I'm experiencing a slightly rough idle and slight hesitation around 4k (almost feels like power surges). Looking around I found someone on the pelican forums with the same issues. https://forums.pelicanparts.com/boxster-cayman-forum/600891-bought-durametric-but-i-need-help-understanding-numbers.html I checked my fuel trims and they are almost identical to what this person had. The fix for them was a new MAF. I'm going to order one and give it a shot. Note: I also did the oil cap test. I took it off with the car idling. I was able to remove it no problem and the car immediately began to run poorly....so I think the crankcase vacuum is okay. __________________ 2001 Boxster S \| Triple Black \| Stock 17s \| Bilstein PSS9s \| 9x7 Shift Console "Sixty percent of the time, it works every time!"