Re: 164 help needed

["Daegrigg (Don)" <daegrigg@domain.elided>]

Jeff,

The 1223 code can also point to the AFMeter.  Check this link from the old
archive for a discussion of other possible causes.  Also,  I would not trust
connections to the temp sensor that "look" oK.  The voltages feeding the ECU
are often very small and need good connections.  Hope this link helps.

Don
PS.  You can also check the new 164 Tech Forum archive for help.

/alfa/FAQ/164/notes_04.htm#diag
----- Original Message -----
From: "Jeff Greenfield" <alfaguy@domain.elided>
To: <alfa-digest@domain.elided>
Sent: Monday, December 30, 2002 9:08 PM
Subject: 164 help needed


> Hi -
>
> It's been awhile since I've been subscribed to the list. Been too busy
> fixing broken cars of various sorts.
>
> Anyway, I'm working on a 164, which happens to belong to our own
> listmaster Richard Welty and need some help.
>
> The car runs very poorly when cold, usually clears up when warm but not
> always (it does for me :-). This poor running when cold is accompanied
> by large plumes of black smoke that would make most city buses proud.
> The check engine light is also on.
>
> The code stored is a 1-2-2-3 which is: "The heated lambda probe
> regulator inner adjuster reaches the minimum or the maximum value of
> correction."
>
> Anyone BTDT?
>
> So far I have not investigated this too far. The wiring to the coolant
> temperature switch looks ok, although it has been repaired previously.
> Anyone know exactly what this code means? I'm guessing the mixture is
> too rich and the system can't compensate, but could also be a bad oxygen
> sensor?
>
> The car also has a few vacuum leaks which will be fixed when it all goes
> back together. I have it apart right now for a timing belt, oil seals,
> and water pump.
>
> Any help would be appreciated . let's help get Richard's car running
> properly :-)
>
> TIA,
>
> Jeff
>
> Crew Chief, Dovetail Racing ITB Alfa #42
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