unless the 924 is really unusual, there is no egr valve and no egr solenoid
every 944 I've looked at, and it's several, is the same as far as absense
of
egr. I'm not going to chime in on this again, the OP can take my advise
or
leave it, it's worked on any number of cars, but they were all 44 not 24 -
make the special tool, and turn the switch in the computer to the more
retarded position
"dave AKA vwdoc1" <vwdoc1@[EMAIL PROTECTED]
> wrote in message
news:hLkZi.68072$YL5.28731@[EMAIL PROTECTED]
> http://www.aa1car.com/library/2000/ic60032.htm
> Harder to diagnose are elevated oxides of nitrogen (NOX) emissions.
Causes
> here may include a defective EGR valve, EGR vacuum solenoid or motor,
> plugged EGR ****ts in the manifold, over-advanced ignition timing or
engine
> overheating.
>
> read here too http://www.car-forums.com/s9/t2590.html
>
> "William Noble" <nobody@[EMAIL PROTECTED]
> wrote in message
> news:47354bce$0$16722$88260bb3@[EMAIL PROTECTED]
>> let me try saying this again - NOX is not an O2 sensor issue - it's
>> timing related, retarding the timing will fix the problem, just flip
the
>> switch to the retarded position
>> <alordofchaos@[EMAIL PROTECTED]
> wrote in message
>> news:1194622362.849083.18620@[EMAIL PROTECTED]
>>> On Nov 7, 7:29 pm, "ignatz" <bobthea...@[EMAIL PROTECTED]
> wrote:
>>>> Hi ! Can anyone out there help me on NOx readings on my 924S? Just
>>>> barely
>>>> passed a year ago - now 1850 where max. is 1250- runs great - maybe
>>>> just a
>>>> little hot - any ideas are appreciated. It is driven about 2000 miles
a
>>>> month, so not from disuse. thanx, ignatz
>>>
>>> It could be 02 sensor running the car lean - they're a 30k miles
>>> service item.
>>>
>>> Make sure your exhaust is hot when you test... running an hour on the
>>> highway right before testing might help the cat. You might also want
>>> to make sure your cat is OK, not plugged, etc
>>>
>>> Could also be a vacuum leak causing a lean condition.
>
>
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