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- From: elmquist@pez.ssesco.com (Chris Elmquist)
- Subject: Re: oxygen sensor
- Message-ID: <Bw1223.2Dn@ssesco.com>
- Sender: news@ssesco.com
- Organization: SSESCO
- References: <1992Oct11.203434.27766@magnus.acs.ohio-state.edu> <Bw0IKw.Jw@ssesco.com> <1992Oct12.170136.9121@magnus.acs.ohio-state.edu>
- Date: Mon, 12 Oct 1992 21:22:51 GMT
- Lines: 44
-
- In article <1992Oct12.170136.9121@magnus.acs.ohio-state.edu> chohan@magnus.acs.ohio-state.edu (Harpal Chohan) writes:
- >In article <Bw0IKw.Jw@ssesco.com> elmquist@pez.ssesco.com (Chris Elmquist) writes:
- >>
- >>So, the more O2, the lower the voltage out from the sensor ? Or visa-versa ?
- >
- >Vice-versa. The leaner the mixture, lesser the residual O2 in the exhaust,
- >lesser the output voltage. Main thing to be noted is that the "V-out" vs. the
- >"excess-air factor (lambda)" curve is not linear. At the optimum, the
- >voltage jumps from about .25 to .75. This makes detection of deviation
- >from the optimum rather easy. .25 or less indicates a lean mixture, whereas
- >.75 and above shows a rich mixture.
-
- Very good information... It should be easy to measure this (as you
- mention later)..
-
- >
- >>Mine (my engine) seems to misbehave more before it is fully warmed but
- >>after it has stepped the idle down from the higher speed cold idle. It
- >>is during this warmup phase that it runs the worst. What kind of O2
- >>sensor output would be expected by the computer during this time...? is
- >>the computer even looking at the O2 sensor then ?
- >
- >It probably is, since the cold idle phase is over. Maybe your sensor is
- >old, and is not responding as fast with warming temperature as it should.
- >
- >There's an excellent article on oxygen sensors in the June 1992 issue of
- >"Europen Car" on page 6. It's kinda' long for me to type the whole thing in,
- >but here's what it has to say. (...comments...) are mine...
- >
-
- [ fantastic details carefully saved away but deleted here ]
-
- >
- >Cheers...
-
- Thank you very much! I will drive straight home and perform these
- tests tonight :-) Much appreciated...
-
- Chris
-
- Chris Elmquist, N0JCF
- elmquist@SSESCO.com
- 73267.2711@Compuserve.com
- (612)342-0003@work (8am-5pm CST6CDT)
-