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