Still no spark on the coil...HELP!!!!!

[David Head]

Maybe for the 91 20V, which uses Motronic 7.1. But the CIS ECU doesn't have one as far as I
know... I'll post this to the list, also so we can get some more input.

Konstantin Bogach wrote:

> David,
>
> according to Bentley 200q '89-91 has timing referece sensor. It sit next RPM sensor.
>
> David Head wrote:
>
> > On a CIS car there ain't no timing sensor on the flywheel. The hall sensor don't work 'til
> > its running - the ECU provides the initial signal. That's why you can jump start it and it
> > will run until you shut  her off
> >
> > Konstantin Bogach wrote:
> >
> > > What about Hall sensor and timing sesor on the fly wheel? I thought they serve as input
> > > to ECU for generating ignition signal.  In this case if one of them is functioning
> > > properly then ECU might not generate signal.
> > >
> > > David Head wrote:
> > >
> > > > That should be close enough... Try push starting it. If it runs, its a distrib
> > > > alignment problem.
> > > >
> > > > Konstantin Bogach wrote:
> > > >
> > > > > On the cam it maybe 1 mm above the head edge.
> > > > >
> > > > > David Head wrote:
> > > > >
> > > > > > If the cam/distrib are more than 1.5 degrees out it won't fire - ECU will not
> > > > > > send a signal. If you align the timing mark at the crank, how far out are you on
> > > > > > the cam and distrib? When in this condition it can be push started, though.
> > > > > >
> > > > > > Konstantin Bogach wrote:
> > > > > >
> > > > > > > Yes, it is on the back.
> > > > > > >
> > > > > > > David Head wrote:
> > > > > > >
> > > > > > > > Remember, on a 5 cyl the cam timing mark is on the back of the pulley. The
> > > > > > > > front mark is for a 4 cyl.
> > > > > > > >
> > > > > > > > Konstantin Bogach wrote:
> > > > > > > >
> > > > > > > > > Hi all.
> > > > > > > > >
> > > > > > > > > Timing settings are ok (cam, distributor and fly wheel). Actually I have
> > > > > > > > > a question about it as well. When cam pulley and distributor marks are
> > > > > > > > > aligned the mark on the fly wheel is 5mm (3/16'') to the left from the
> > > > > > > > > mark on tranny housing.  Car ran well all the time after I change timing
> > > > > > > > > belt but nevertheless I'd like to ask: is it ok or too off?
> > > > > > > > >
> > > > > > > > > I slightly rotate distibutor while cranking - no help.
> > > > > > > > >
> > > > > > > > > Coil resistance ok, fuel pump runs in output tests (it is hard to hear
> > > > > > > > > it when I crack the car) so I assume relay is ok. Ignition control
> > > > > > > > > signal from ECU when cranking  makes me worry: I can not interpret it.
> > > > > > > > > Multimiter shows varying numbers but Bentley says: "no less then 0.2V" -
> > > > > > > > > nothing more.
> > > > > > > > > Looking at another car (aloso 200q '89 but it has different coil)
> > > > > > > > > completed confusion:  control signal from ECU to the coil power stage is
> > > > > > > > > 0V.  The car starts instantly though. By the way Bentley for 200/100
> > > > > > > > > '89-91 does not show such coil at all.  Connector from ECU has 2 pins
> > > > > > > > > only but I think it is because MAC-11 on this car does not have separate
> > > > > > > > > ignition ground compare to MAC-14 in the first car.  I am not good in
> > > > > > > > > electonics so I may be well wrong.
> > > > > > > > >
> > > > > > > > > Please,  let me know if you know what signal should be on ECU pin 22
> > > > > > > > > (ignition control signal) when starting motor.  In my undestanding it
> > > > > > > > > shuld be open/close transistor signal, varying one.  But measument on
> > > > > > > > > the working car confused me. I am measuring voltage in DC mode.
> > > > > > > > >
> > > > > > > > > Konstantin Bogach.
> > > > > > > > > 200q '89
> > > > > > > > > 200qa '89 dead