[Shotimes] Check Engine Light Under Acceleration?

[Kevin & Cheryl Airth]

Jonas:
 Check for worn motor mounts. Engine is still moving too much. Sho Times has
the how too. I would check the plugs at the DIS module, they might be
flexing or not making good contact, broken clips. The SHO has a SPOUT. The
plug should be around the cam sensor/A/C dryer area. Taped up in the
harness. Can be difficult to find. ATX cars seem to have 2? Anyone know why?

 If your car has a chip you only have to look at the back of the PCM. Push
in on the sides of the glove box , so you can work the rubber stoppers
around and let the glove box open all the way. Look up and to the left for a
silver box. It will have a metal clip and screw on it if untouched. The
small rubber cover over the service port will have a white sticker with your
computer code on it. If you have a chip, this clip will be missing and where
the rubber plug was, is where the chip plugs in. You will see the harness
and a small PCB hanging in this area.
.
.

> Now I have another problem puzzling me.  If I accelerate hard and
> then let off the gas, the tachometer will sometimes twitch towards
> zero, and the CEL will always illuminate a few seconds afterward.
>
> I pulled the continuous codes and I get a 212 and 219.  Both seem to
> indicate a loss of spark signal (SPOUT).  I would suspect a wiring
> problem except that it always happens when letting off the gas after
> hard acceleration, never at any other time.
>
> I recall my Mustang has a "SPOUT connector", which is just a small
> jumper (maybe a resistor) that you remove to inhibit spark advance.
> Do Gen 2 SHOs have one of these?  I looked and couldn't find one.  If
> mine is simply missing, that would be a real easy problem to fix.
>
> I have already replaced the crank sensor, cam sensor, DIS module,
> HEGO sensors, plug well seals, plugs, and ignition wires, so they can
> be ruled out.
>
> Maybe I'll pull out the PCM and see if someone stuck a chip on it...
>
> It's a 92 MTX in case you missed my first post.