Re: Playing in Pueblo

[Orin Eman <orin@wolfenet.com>]

> After a few sessions I down loaded the ECU codes and I got
> a 2141, I left my diagnostic notes at home and couldn't remember
> what it was and made a few phone calls. Turns out it is an error
> for max retard of timing due to knock. I swapped in another ECU
> with a chip with less aggressive (stock) timing and went out again.
> I still got a 2141. I ran the rest of the day with a lighter foot and
> somewhat short shifting. My ur-q ended the day by blowing off
> the vacuum line from some sort of damper for the fuel system.

Did you hit the rev limiter?

I got a 2141 the other day after deliberately hitting the rev
limiter.  The check engine light came on about an (uphill)
mile later.

Anyone seen the check engine light or pulled a 2141 after hitting
the rev limiter?

The 2141 is almost certainly due to the ECU getting confused
over which cylinder is firing.  It is listening for a quiet
signal from cyl 1 or 5 and gets a real loud one from 2, 3 or 4
and thinks there is knock when there isn't.

I'm also suspicious of the hall sender since this is what tells
the ECU which cylinder it is on and there IS a bug in the MAC11
related to the current cylinder if the hall sender is missed
for more than 51 revs.

Orin.