Jim's ignition problem

[Jim Green]

Hey Marc, thanks for brainstorming.
--- Marc Swanson <mswanson at mswanson.com> wrote:
> another thing occured to me today.  Have you checked
> your NTC coolant sensor
> (mounted on the top of the inlet flange on the
> head)?  The ECU backs things
> off a bit until the car warms up.  Just a thought...

Yes, it tests out fine, but I've also suspected that
as a problem.  I'll probably replace that also just to
be sure.

> Also, what about the potentiometer replacement wire?
>  Did you wire the output
> from the 034 computer to the ignition module?  If
> not, that can effect timing
> I believe.

Yea, it's hooked up, and sending out voltages that
similar to that of the airflow pot.

The new knock sensor really didn't make a difference,
but at least I know it's not the cause now.  Although
I did advance the static timing to 12 dbtdc after I
put the new knock sensor in.  It runs a lot better,
but I didn't really open it up since it just seemed to
be masking the problem.  I'm going to hook up a Saab
APC system to see if I really am getting knock or not.

Thanks,

=====
Jim Green
'89 90tq EFI
http://www.geocities.com/jeg1976/car_home.html

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