Currently working on a 2019 Jeep Wrangler JL with a 3.6L and manual transmission. Have recently installed a turbo and am getting some weird hiccups during cruise. Would love to understand what the neural net is doing.
Here is what I am finding about the 'hiccup' experience:
- Issue is consistently occurring at ~25% throttle
- Only occurs when pushing down on pedal, not when lifting up at same area of pedal.
- Quick throttle acceleration (passing by 25% area) does not experience.
- AFR is going very rich during this time (ex 14.7 -> 12.0 or less)
- Timing is dropping to almost 0 deg (ex 39deg -> 2deg)
- Injector timing jumps up ~ 2.0 ms (ex 3.6ms -> 5.6ms)
- Injector timing looks to act before throttle blade position is affected. (ex 21% ->24%)
Picture & log attached.
I began looking at BOV and Wastegate being the issue, but they seem to be reactionary to the root cause.
Looking for ideas from anyone who has chased this on Chrysler products?