[s-cars] Re; not the code I expected

[Steve Marinello]

Not a bad idea, in fact, I had a water bottle in the car to try it, but it
hasn't done it to me.  Gave up and dropped it off at the mechanic this
evening to have him see if he can pull any more codes.  His guesses were
crank sensor, cam sensor or, #1 in his opinion, fuel pump relay.  We'll see.

Actually needed to get some room.  The hot A4 I bought should be delivered
late tonight or tomorrow morning!

-----Original Message-----
From: chris chambers [mailto:fastscirocco_2000 at yahoo.com] 
Sent: Thursday, September 24, 2009 1:58 PM
To: smarinello at entouch.net; Scarlist; Tom Green
Subject: Re: [s-cars] Re; not the code I expected

I recommend driving it and getting it hot, return to where you
can work on it and hopefully it wont start.

Pour come cold water on the CPS and see if you can cool it down
and see if the car will start then.

I think your CPS is bad and is acting up when it gets hot, that's what mine
did.
If pouring water on it cools it enough and it starts I would take that as an
indicator that its a bad CPS and replace it.

HTH
Chris

 


----- Original Message ----
> From: "smarinello at entouch.net" <smarinello at entouch.net>
> To: Scarlist <s-car-list at audifans.com>; Stephen Marinello
<smarinello at entouch.net>; Tom Green <trgreen at comcast.net>
> Sent: Thursday, September 24, 2009 2:42:05 PM
> Subject: Re: [s-cars] Re; not the code I expected
> 
> Tom,
> 
> The CEL came on briefly a couple of hours before the first no start
occurrence.  
> 
> Other than that, the car have been running relatively well, a bit smoother
with 
> the 
> new injectors, and not exhibiting any characteristics that would make you
think 
> the 
> pump was having problems.  It has not been driven particularly hard
lately, in 
> large 
> part because the timing belt should probably be replaced by both miles and
time, 
> 
> although it looks good and does not appear to be loose at all.  The only
running 
> 
> issue is the one that precipitated the upgrade/replacement of the cats
with a 
> new O2 
> sensor and new plugs in the Spring and the new injectors recently; that
being 
> that 
> the mileage ain't what it should be. It smells rich at times.  There have
been 
> occasions that there is erratic ideally at a stop, making me think a
vacuum leak 
> is 
> playing in all of this, but when I have started it up and want to check,
it 
> doesn't 
> do it and I can't find anything...although I do not profess to be as adept
at 
> that 
> with the S-car.  I'm still stuck in the urq mode...and I've forgotten most
of 
> that.
> 
> I can't see how any of this stuff would cause a no start situation,
however.  
> Bad 
> running, but not no start.  There was a second occurrence two days ago
when my 
> wife 
> stopped for gas (yes, our cars get passed around relatively unimpeded)
after 
> going 
> shopping.  She called my son to come help her push it to the side, but
when he 
> got 
> there, it just fired up. SO it's a warm/hot situation, but it doesn't 
> necessarily 
> take too long to cool down enough.
> 
> Ben has suggested checking the timing belt alignment, which I will,
although it 
> would be hard to imagine it slipping with it as tight as it seems to be. 
On the 
> 
> other hand, I better look a little closer...maybe it's tight because it's 
> running on 
> top of the gear teeth and not slotted in correctly.  I will probably have
to 
> take it 
> to a mechanic to get the VAGCOM  to pull codes...or maybe I should just
bite the 
> 
> bullet and get it for myself now.  What's the going rate and what would I
need?  
> 
> Hell, I've already put so much new into this thing, what's little more?
...and 
> it 
> still needs the headlight switch replaced (got that) the bent strut tower 
> replaced 
> and the t-belt, so I'll have to keep it a couple of years anyway.
> 
> Steve
> 
> On Thu Sep 24 12:06 , Tom Green  sent:
> 
> >There is a lot of information about O2 sensor codes in the Bentley and
> >many troubleshooting tips.  It is important to understand that most  
> >codes
> >are not a direct indication of the sensor condition but a secondary  
> >result of
> >some other problem.  Anything that causes excessive or insufficient  
> >amounts
> >of fuel in the system will exceed the limits of the O2 sensor  
> >adjustment and
> >should result in a code and MIL.
> >
> >And, no, the O2 sensor will not prevent the engine from starting.
> >
> >At the point that the engine does not start, if it is a faulty CPS, it  
> >is not
> >intermittent at that point.  If the MIL was on when you shut down (and  
> >it was
> >caused by an open or short in the CPS) you would expect a code.
> >
> >I am not sure about the blink codes coverage, but it's better than  
> >nothing.
> >The VAG-COM will give you more information about the fault.  Right now
> >you don't know if the fault is rich or lean.  Bentley also indicates  
> >the MIL
> >will be on when this DTC is present.  Is there a VAG-COM available in
> >your neighborhood?  Have you observed the MIL on when driving the car?
> >
> >Because the symptoms closely match the CPS failure syndrome experienced
> >by so many listers, you may have started down this path to the  
> >exclusion of
> >of other possible causes that do not have a specific DTC, i.e., fuel  
> >pressure
> >or supply.  Perhaps you have had some clues, i.e., poor mileage that  
> >have
> >not been resolved?  I did not understand your other comments about ....
> >overheating and other assorted comments in the Bentley??
> >
> >You can verify if a CPS fault will record a code by unplugging the  
> >sensor at
> >the front of the fuel rail while the engine is running and then  
> >plugging it back
> >in.  That might eliminate a little guessing even if it is not totally  
> >conclusive.
> >
> >Tom
> >
> >> -----Original Message-----
> >> Date: Wed, 23 Sep 2009 23:09:45 -0500
> >> From: "Steve Marinello" smarinello at entouch.net>
> >> Subject: [s-cars] not the code I expected
> >> To: "'S-Cars'" s-car-list at audifans.com>
> >> Message-ID: 8613DE88AA7A4D0AB99112860184A19B at GT5674>
> >> Content-Type: text/plain;    charset="us-ascii"
> >>
> >> Well, the S6 has failed to start one more time.  It was warm.  It  
> >> restarted
> >> after it cooled off a bit.
> >>
> >> Finally blinked the codes, expecting the cam sensor, if anything.  
> >> NOT.  Got
> >> 2341; oxygen sensor..overheating and other assorted comments in the  
> >> Bentley.
> >>
> >> There was a new sensor put on in the Spring, along with two new  
> >> cats.  As
> >> you may remember, I was frustrated that the sensor was bad, because  
> >> the
> >> mileage did not improve and, in fact, got worse.  My mechanic  
> >> checked the
> >> sensor and said it was functioning fine.  Hmmm.
> >>
> >> Would the O2 sensor even keep it from starting?  Which way to go  
> >> now?  I
> >> suppose the first step is to check the current CPS and see if it is
> >> functioning, but since it's intermittent even when hot, that may not  
> >> show
> >> anything.
> >>
> >> Let me know what you think.
> >>
> >> TIA,
> >> Steve
> >
> 
> 
> _______________________________________________
> S-CAR-List mailing list
> http://audifans.com/mailman/listinfo/s-car-list
> http://www.audifans.com/kb/List_information