ECMlink car running rich all of a sudden.

[96spyderdrag]

Had a fuel trim bank 1 code a few days ago. cleared it and ran fine then today it runs super rich going into 8s on AFR while building boost. What could it be? O2 sensor read right?

not the best log

@llxkevinxll
Only tagging since you might know something from my last post.

Also got the emission hoses back together and still get this any ideas?

 

[steve]

Is your front O2 still a factory narrowband? It's not reacting very consistantly. I know you put one in last year but not sure what changed since.

 

[96spyderdrag]

Nothing has changed since last time. Just started running like that all of a sudden.. so you think replace o2 again?

 

[steve]

The ECU thinks you are super lean so I don't know who's correct.

(I was basing this on the CombinedFT but I might have had my brain on backwards this early in the morning.)

 

[96spyderdrag]

So I'm assuming the o2 is tricking ecu into thinking it's lean and making it super rich? Plugs were black

 

[1990TSIAWDTALON]

I hate to throw parts at a car. Any codes reappear for the O2 sensor? That is what is sounding like the culprit.

 

[96spyderdrag]

Only code was p0171

 

[1990TSIAWDTALON]

P0171 – System Too Lean (Bank 1)

How to diagnose the P0171 code easily. Find the meaning, symptoms, and the most common causes of the P0171 code - Full professional diagnostic guide.

mechanicbase.com

O2 sensor link

 

[steve]

Try resetting the ECU by pulling the connectors for a moment and get a fresh log.
It's free other than your time.

 

[96spyderdrag]

ok i did that still runs terrible.
i didnt go wot because it just didnt seem to want to go.
@steve

 

[96spyderdrag]

Somehow missed it but my jpipe gasket is blown in half. Cut a new cork gasket. Stripped the bolt hole on the turbo. How should I go about that? Copper wire fix? Bolt threads half way then stops

 

[JohntyBee]

Somehow missed it but my jpipe gasket is blown in half. Cut a new cork gasket. Stripped the bolt hole on the turbo. How should I go about that? Copper wire fix? Bolt threads half way then stops

Chase the threads and clean them up if you can. If not you could go a size up if you want

 

[1990TSIAWDTALON]

Fix that boost leak and get another log for us to look at.

 

[96spyderdrag]

car seems to run right now. opinions?