nope...the Magnum engines don't have a knock sensor. (If they do, it's not
a conventional knock sensor.)
I don't disagree with ya...and you don't have to go into lurk mode....but
this same problem is on several models of Dakota's. The only difference is
that some ping and other don't. Same basic timing curve though.
- Bernd
At 09:36 AM 04/19/2000 -0400, you wrote:
> > > What we found was that from a part throttle to WOT "stab", the truck
> > pinged
> > > and only the timing had a delay of about 1 second to change settings
> (all
> > > other sensors reacted a lot faster), causing the truck to run at WOT and
> > at
> > > 40 degrees BTDC. This definitely will cause pinging.
>Bernd,
>Just say the word, I'll shut up & go to lurk mode.
>Does this engine have a knock sensor? In my experience,
>you can get pretty brave with timing if the knock sensor is there to
>protect you.
>MaMopar appears to be pretty consistent with software practices
>among her OBD-II PCMs. I want to preface this, by saying that
>I learned it from the Neon PCM info that I've encountered..:
> I know that at least "some" of the CC PCM's employ
>a block learn matrix for both fuel & spark. The spark learning
>involves both long & short term tables. These get cleared if you
>reset your PCM by disconnecting the battery. In a nut shell,
>if the PCM detects knock at a specific MAP & RPM value,
>it will subtract some timing from the calc for that location in the table.
>This is done to adjust for sh*tty gas and maybe even oversights in the
>calibration. Just to help me get up to speed in the Dak world, which
>engine/year applications had no knock sensor? I was under the
>impression that it was a requirement of all OBD-II PCM's
>Thanks,
>Mike V
>
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 11:50:49 EDT