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Old 04-29-2021, 11:38 PM   #1
ilovedemhotrides
Scooby Newbie
 
Member#: 326147
Join Date: Jul 2012
Location: Philly
Vehicle:
2004 STI
wrb

Default Help me find my mysterious issue

Long story short, my built car sat for about a year. I have been getting it road-ready, and have driven it a few times in the last month with no issues.

I just parked the car to install front/rear swaybars, drove it with no issues earlier this week. I filled it up with gas and drove it later that night, last week, with no issues.

I installed coilovers today and also changed the oil. I started it up to take it for a spin and the engine sounds like crap and is having a hard time running. I checked and did find 1 vacuum leak, which I fixed, but it is still running poorly.

I did not drive the car, the logs are from idle.


Check out the logs, it looks like A/F learning is crazy. I would rev the car up, and rpms would drop very low, even killed the car a couple times because it started to go super lean. I changed the sparkplugs but no better. Sounds like it's 'breaking up' almost like a spark issue. This is why I replaced my sparkplugs with one step colder. I was thinking it could be bad gas?

Also, DAM might be off because of battery disconnect. Cobb says it can be low after an ECU reset.

Sounds bad, I won't re

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