bizarre throttle body adaptation codes surging idle plz help - JB4tech.com

Swerve

Happened all of a sudden when I switched my anti lag wire into the correct slot on large black sub connector. When I started it up idle was surging and the gas pedal had no effect on the revs. See pics for codes. Could my throttle body have just took a sh1t randomly?

Swerve · 03-30-2021, 06:52 PM

yup i think my throttle body legit just sh!t its pants right before my very eyes... see this video thats what my car does. N54 surging idle. SOLVED! - YouTube

Swerve · 03-30-2021, 07:13 PM

Im just going to talk to myself. Yes your throttle body probably took a sh!t replace it.

Swerve · 03-30-2021, 07:13 PM

OK thanks a lot!

Lynxs1981 · 03-31-2021, 07:37 AM

Tried removing the JB4? Having the same issues; car runs great with JB4 removed. Seems to be an issue with the BSD.

Swerve · 03-31-2021, 12:27 PM

whats the BSD? How is this resolved?

Swerve · 03-31-2021, 12:42 PM

I took the jb4 out and its still doing the same thing... Let me know how you get that issue resolved.

Swerve · 03-31-2021, 01:29 PM

I then flashed back to stock and the car is running normal again... Then I installed just the jb4 and its back to the surging idle. Anyone from burger have anything to say about this?

Lynxs1981 · 03-31-2021, 01:59 PM

That’s the same boat I am in; haven’t found a solution yet. Did you check the black 44 pin ecu connector? The throttle signals run through it.

Swerve · 03-31-2021, 02:14 PM

I'll have a look. This happened as I was messing with stuff trying to get antilag wired in correctly. Check out the post I made ATTN BURGER MOTORSPORTS.

Milehighbmw · 08:43 PM

Have you done a throttle reset?

Push start button without the brake (acc on)
Push gas pedal to the floor
Keep it down for 30 seconds
Turn car off without releasing the throttle
Release throttle
Wait 2 minutes
Start car

Google e90 throttle reset. There's videos

Milehighbmw · 03-31-2021, 08:32 PM

From that list of codes my guess is your battery is going bad.