[s-cars] By-passing the CPS

Steve Powers sbpowers at gmail.com
Sat May 12 18:35:28 EDT 2007

Scott -

Yes, CPS in my case means Crankshaft not Camshaft. My experience of
being able to start the car disagrees with your statement of not being
able to. Dunno what absence of a pin might do but I know that my
sensor was entirely disconnected. There was no signal nor continuity.
(I had to resolder the wire back to the firewall connector).


On 5/12/07, QSHIPQ at aol.com <QSHIPQ at aol.com> wrote:
> I think the statement is actually with regards to the TDC reference sensor
> in the flywheel, not the camshaft position sensor..  The crank position
> sensor pin (TDC) in the flywheel needs to be there to start the car, but
> once started, can be deleted/unplugged/missing pin.  WG Giles found this out
> at Steamboat this past February.
> I agree, the CPS can be faulty and the car started on ether, BTDT.  Starting
> fluid for some of us old CIS guys is a given, and I know more than once I've
> started the group A S2 rally car with it several times over the years,
> especially on really cold mornings.
> Scott Justusson
> In a message dated 5/12/2007 9:20:28 A.M. Central Standard Time,
> sbpowers at gmail.com writes:
> Michael -
> > The crankshaft position sensor (the upper sensor of the two on the
> > left side of the block by the flywheel) signal is used to provide the
> > cylinder number one top dead center signal. This signal along with
> > the signal from the camshaft position sensor is used for engine
> > starting. If this sensor fails while the engine is running, it will
> > keep running. if the engine is stopped, it can't be restarted.
> the last sentence is not entirely true. I repeatedly started mine
> using ether and the ignition key, e.g. heroic measures...
> ________________________________
> See what's free at AOL.com.

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