Help yoshi finish his S52! *update* 1281 now

[shiboujin]

Unfortunately, code 1222 seems to be a crap shoot of many possibilities.

Symptoms:
CEL
Runs kinda boggy (rich my guess)
car will die if you drive then let off the throttle while driving

I found a massive air leak at first, fixed it and went for another drive but the code stayed. Haven't had time to clear the code and try again though. I feel like it would go away if it was that simple. I can't find a good answer as to what the 1222 means. Could be O2 relay or could be maf leak.

Setup:
S52 (just installed vanos so maybe it's installed wrong?)
GTX3576R
Technica tune/blow through maf
silver 413 with pin 66 snipped
OBD1 stock E36 harness

[blackhawkimpact]

1222 is caused by vacuum leaks. Reset the CEL, maybe?

[blackhawkimpact]

Also try replacing your 02 sensor see if that helps. You either still have a vacuum leak or your 02 sensor's bad. Or probably both..

[shiboujin]

O2 is brand new. *shrugs*

[toointoxicated60]

time to update that sig yoshi.


My vote is leaks.

[shiboujin]

general consensus I'm finding is that my bov post maf is causing the 1222. Makes sense.

[RobertK]

1222 = vacuum leak and hardly ever a bad O2.

If you cannot idle then you have big one somewhere.

[shiboujin]

yay CEL is gone and the car drives crap tons better. Now it tosses a 1281 now. Maybe the ECU isn't grounded? It is just kinda dangling there. I don't remember the stock DME requiring chassis grounding though.

[AnimalE30]

The ecu does need a ground. Mine would stall every now and then when it wasn't. Not sure I that is the cause of your code tho.

[shiboujin]

well hopefully that's an easy fix then!

[AnimalE30]

The 318 ecu mounts take care of the ground and dingle berry issue well.

[blackhawkimpact]

ECU doesnt need to be ground. At least not by mounting it. I had my ECU dangling inside the glovebox for weeks and car was running fine with no codes.

Also.

Code 1281 - control unit memory supply

Reset the codes. Disconnect the DME FOR 5 minutes. Reconnect DME and run it at idle for 3 minutes. Then drive for 30 minutes

Check your wiring.

[shiboujin]

So much conflicting info :( Some say grounding will take care of it while others say nay.

What is there to check on my wiring?

Here's my wiring. Orange is what I actually wired. https://docs.google.com/spreadsheet/...iR2VVS0E#gid=0

[blackhawkimpact]

Looking at the chart. Looks like some of you wiring is mixed up??

[shiboujin]

I spent a long ass time staring at diagrams. I'm open to seeing what's wrong if it is. What specifically?