Thus spake WORSS on 1/23/2004 8:27 PM:

> Thanks for the info. Not sure this matters, but they are claiming that the
> #3 and #4 cylinders have low compression. #1 and #2 are fine. Would a
> blown head gasket cause a code 43? It would have to cause the car to run
> very rich or very lean.

That I'm not 100% sure of. When my car was doing this, there was a
very, very definite smell of unburnt gas in the exhaust, so it was
running very rich. I didn't let the car go into closed-circuit mode
before pulling wires, etc. in an attempt to find out what was wrong, so
I didn't get a code out of it. Now I kinda wish I had.

I am voting that with a blown headgasket it'd be running rich because
you'd have two cylinders that either aren't firing at all or are not
getting good combustion when they do fire. However, based on experience
with a blown headgasket (GM 3800 engine), the car become virtually
undriveable.

Wish I could be more helpful. Keep us posted.

-moitz-