Erratic STFT

[Adamone92]

hey everyone. Recently installed vmp odin kit. At first it ran ok, ran into some throttle body issues, bank 2 o2 sensor stuck rich, etc.

I am now on my third twinjet 69 throttle body and it seems good so far. However, i have codes p0556 (brake booster) and p050A (cold start idle). My Short term fuel trim bank 1 stays around 1 at idle..bank 2 starts at around 1 then goes down to around .6 (while bank 1 is still 1). My AFR seems fine..both stay around 1..as does my LTFT. My vacuum at idle is right around 18 or 19.

Any thoughts? The car idled fairly rough but didnt stall, i also saw some fluid under the car which could be water..but im fairly certain its fuel. Im about to start taking things apart to check my fuel connections and injectors..any other ideas what to check?

I can try to attach an idle log if helpful

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[Adamone92]

 

[mustangpegasus51]

When trying to diagnose issues using OBDII it's best to get a waveform for stuff like fuel trims. Also, if you're into nerding out on this kind of stuff, I suggest looking at this guy's youtube vids. He explains things phenomenally.

 

[Adamone92]

When trying to diagnose issues using OBDII it's best to get a waveform for stuff like fuel trims. Also, if you're into nerding out on this kind of stuff, I suggest looking at this guy's youtube vids. He explains things phenominally.

Very informative video. I watched both parts. I appreciate it a lot. Im going to start taking things apart in a bit. Have some ideas what it could be so we will see

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