Re: 94 164LS Vacuum Problem Maybe....

["Daegrigg (Don)" <daegrigg@xxxxxxxxxxx>]

You have my empathy.  But your description raises several questions not to
mention the cost of all the tear downs.  An O2 sensor (as a rule) does not
wear out in four months unless the conditions in which it is operating is
way  wrong - mixture, wiring, fuel type. The 1223 code can also point to the
air flow meter.  Did you try clearing the codes after vacumn hose was fixed.

Did the car every run correctly after the new runners and injectors were
replaced?  It's not clear from your message whether the brake boost is now
operating correctly.  If you have to check the cam timing, make marks on
visible part of the cam gear so that you can check timing without pulling
the covers.


----- Original Message -----
From: Ron Sitnick <ron.sitnick@domain.elided>
To: Alfa Digest <alfa-digest@domain.elided>
Sent: Tuesday, April 29, 2003 3:39 PM
Subject: 94 164LS Vacuum Problem Maybe....


> Good afternoon all...
> Here we go again!
> The LS is back at the mechanic. A few days ago I started her up and she
was
> running rough.
> Just had injectors replaced and new 45mm intake runners.
> On the way to work I got intermittent check engine light and 1223 code.
> Also power assist for the brakes was flaky. worked for 1 pump after
driving
> then rock hard.
> Drove DIRECTLY to the shop.
> So far... Found loose vacuum hose in fender well.
> Was still getting 1223 codes but not as rough running.
> New o2 sensor (and was replaces 4 months ago as well) got rid of the code.
> Intake manifold vacuum is at 8 and should be higher supposedly.
> Was jumping all over the place before the hose was fixed.
> Suspecting sticky lifters or may have jumped a tooth on timing.
> Going to tear things open and check timing and compression for starters.
> Was wondering if anyone has seen this before I have him tear the engine
down
> again.
> Any clues welcome.
>
> Thanks!
> --Ron Sitnick
> 1994 Alfa Romeo 164LS Auto
> 1979 Fiat Spider 2000
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