'89 525 1252 code. How system knows?

[Gene in NC]

'89 525 1252 code. How system knows?

What does the DME see to set the 1252 code? Forget what I might need to do to correct the problem.

How does the DME decide to set the code. REmember there is no Knock sensor in Motronic 1.3.

[whiskychaser]

'89 525 1252 code. How system knows?

What does the DME see to set the 1252 code? Forget what I might need to do to correct the problem.

How does the DME decide to set the code. REmember there is no Knock sensor in Motronic 1.3.
This would seem to suggest 1252 is a problem with injector no. 2:
http://www.e38.org/e32/bmw%20code%20defaut.pdf

[M20Turbo]

Gene.... Is the idle a little off as well?

[Gene in NC]

Yes, idle is a little low,