[s-cars] e//S2 in need of help

[MLP-S580]

Hey, FWLIMB on earlier engines, there may also be a relatively simple
mechanical "pin" on the flywheel that also needs to be checked.  Perhaps WG
or Scott might fill in the blanks here on this ....?  I don't know, but it
may provide some kind of timing signal without which, no pin, no start!   

HTH 
Mike

-----Original Message-----
From: s-car-list On Behalf Of Dave Forgie

While I am correct about the CPS being needed to start the car, Mihnea Cotet
(MRC) has noted on the S2 forum that somehow, it comes back into play at
something over 4000 RPM.  I can't confirm that but have to presume that it
is correct.  That being true, the CPS could fail after start-up and then,
during a spirited use of the throttle, when the engine goes over 4000 RPM
and the ECU notices the CPS is not functioning as required, it shuts the
engine off to save it (that seems unlikely because typically there is a
"limp home" mode so you can at least drive the car to the side of the road).
But if that is true, when you would go to refire the car, it won't fire
because the ECU does not get the CPS signal that it is okay to trigger the
J17 fuel pump relay (at least in an UrS car).

Before you tackle the CPS, I would confirm that your fuel pump is
functioning by hard jumping it an measuring 15 sec of output (should be
about 675 mL).  Then I would check to see if you have spark at the coils.
You could have an ECU fuse failure because one of the OE coils shorted out
(the wires get brittle and crack and will short to the cam cover - which
blows the ECU fuse).  If you have an otherwise functioning fuel pump and you
have spark, then I guess you have to conclude that its the CPS.  However, it
could also be the crank position sensor (are you running an aluminum
flywheel - TMTek has had problems with their sensor pins).

Too bad you can't pull codes because they do help in situations like this
when there are multiple potential problems/solutions.

Good luck.  Keep us up to date.

Dave F.



>>> Dave Kase <davekase at pdqlocks.com> 03/18/07 11:13AM >>>
Well, its seems my A and B code sockets are not hooked up properly.  I

can't get any codes.

I read your posts on the S2 Forum and you say that the cps doesn't come

into play under normal driving.  That is what I was doing when the car

shut off.  I am trying to figure out if I should pull the valve cover and
have a go at the CPS.  Any comments?

Thanks,
Dave K.

Dave Forgie wrote:

>Dave:  You are describing the results of a cam position sensor
failure. 
>I am not saying that's what it is but, if you can, pull the blink
codes.
> Look for 2113.  If I am right, the fix can be inexpensive using the 
>Hall senders from BB Automacao as per the GB last year.
> 
>Dave F. 
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