Hey folks,
Ive had these issues going on for a while now on my 2016 Fiesta ST with about 95k miles on the odo.
There are two symptoms that occur. One happens constantly the other is intermittent.
Issue #1: Boost fluctuation - Easily reproducible.
Issue #2: Loss of power, no boost, turbo flutters. - Intermittent, difficult to reproduce.
I appreciate any advice. Thanks!
Ive had these issues going on for a while now on my 2016 Fiesta ST with about 95k miles on the odo.
There are two symptoms that occur. One happens constantly the other is intermittent.
Issue #1: Boost fluctuation - Easily reproducible.
- When accelerating, the boost seems to fluctuate - it rapidly builds boost and drops and build and drops.
- You can feel the power fluctuate when accelerating.
- You can hear the fluctuation in the exhaust note.
- RPM does not appear to go up and drop down abnormally indicating this is not a clutch issue (as best as I can tell).
- Here is a short video I took. You may need headphones to hear it. Listen to the exhaust note: https://www.youtube.com/shorts/W4jQtlsjKH8
- Here is a data log: https://docs.google.com/spreadsheets/d/1sMXSXC-MSKZU4tGidZLPa24naQkEIDHgjjzlxMrH440/edit?usp=sharing
Issue #2: Loss of power, no boost, turbo flutters. - Intermittent, difficult to reproduce.
- Has happened randomly after driving anywhere from 10 mins to 10 hours
- No power, cannot accelerate. No boost
- After letting off of WOT, turbo flutters
- Stopping and turning off the car for a moment makes it go away
- Short video showing the issue. Might need headphones: https://www.youtube.com/shorts/YmT4ANEzxvM
I appreciate any advice. Thanks!
