'89 100 Check Engine

[edwulf]

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Hello Listers,

Here's what I've got going on.

'89 100 non quattro, auto.  Car has recently begun to sputter, and sometime=
s stall, check engine light has come on only to go off without leaving a tr=
ace of what code may have caused it to come on to begin with.

It's my understanding that the trouble codes will flash, one at a time (as =
I reinsert and then remove after 4-5 seconds from the fuel pump relay) unti=
l the 2.5 second 0 code.  However, this is what I got this morning.

Car running after a 20 minute run, check engine light is on:

4444 - no codes in memory

2.5 second 0 code

2341 - O2 sensor.

2232 - Air flow sensor potentiometer.

In that order.  I don't think I should have gotten anything after the 0 cod=
e, should I?

I have lots of experience with Ford EEC-IV.  Very little with the CIS-EIII =
system.  Where do I start?  O2 sensor?

Thanks for the advice.

Eric Wulf

'89  Audi 100
'88 Merkur Scorpio
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