Yeah, I know it is supposed to jump around when attached to the factory O2
sensor. I am trying to wait untill I have my exhaust put in to weld the bung
in. As far as supposed to be running lean, I don't think however that it is
supposed to be so lean as to be off the scale persay since it appears to be
running so lean that the gauge doesn't light a bar at times. FWIW- My gauge
used to swing from full lean to full rich and back and forth when driving,
and under full accel, it would stay rich, when stopped it would fultter
between mid lean and mid rich (mostly stoich). Now its just lean. WTF ?!?
Marty
http://members.cox.net/got-speed
""Tim Berry"" <coolva1@cox.net> wrote in message
news:001101c26043$24a147e0$2602a8c0@timmay...
>
> Your truck should run between lean and stoich (sp?) on normal
acceleration,
> and idle... (we do have lean burnin motors) Under WOT you should see
> slightly rich on a stock truck...
>
> Also, if you plugged your A/F meter in on the stock O2, it may be playing
w/
> the signal... you may wanna have an exhaust shop weld another O2 Bung in
> the exhaust close to the stock one, and spend $15 on a single wire o2 from
> Advance/Autozone... that way you're not tapping into the signal the
> computer is using.... (the way mines setup)
>
> just my advice b4 you go changing stuff ;)
>
> Tim Berry - Chesapeake, VA
> 97 Dakota Club Cab SLT (4315lbs)
> 318's best: 13.28@103.75
> 360's best: 13.03@103.76
>
> >
> > Q: I seem to be running lean all the time, unless I floor the gas. I
have
> a
> > autometer A/F gauge that has been pretty helpfull in the past. Tonight I
> > floored it for about 200 ft (had to merge off the interstate from a stop
> > light) and came to another stop. When I stopped the idle dipped down to
> the
> > point where it almost cut off, but almost immediatly came back up to
> around
> > 750 rpm. I pulled over a few blocks down and sat for a few minutes with
> the
> > engine running and it didn't do it again, but still stayed lean, most of
> the
> > time to the point where the gauge didn't even light. I then removed the
> JET
> > chip and for almost a minute the A/F looked normal jumping around from
> lean
> > to rich to back, but then went back to staying lean. I called advance
and
> > the guy said the O2 sensor is rated for 100k, and the problem may be
with
> > the IAC. I am asking for opinions here I have another IAC that I might
try
> > to swap in and see what happens, but want to fix the problem before it
> gets
> > worse, even if it means getting a new O2 sensor. What is weird is it
stays
> > lean even when driving around ! I'm stummped. Help !
> > BTW- Its a 98 318 Auto
> >
> > Marty
> > http://members.cox.net/got-speed
> >
> >
> >
> >
>
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:05:22 EDT