single wire OXS: how it works?

Joshua Van Tol josh at spiny.com
Wed Apr 25 23:39:31 EDT 2001


>Hi listers.
>
>I see that single wire O2 sensor is almost twice chipper than 3 wire
>one.  I have a question:  why is that?   What I lose if I buy single
>wire sensor?
>
>
>Konstantin Bogach.

The heater. The other two wires supply a heater that gets the oxs up 
to temp quicker, and, in some applications, gets it up to temp at 
all. This would be important if the oxs wasn't close enough to the 
EM, or if something (like a turbo) was reducing the exhaust temp a 
bit. In general, unless you're in desperate straits, use the correct 
3 wire unit. A good 1 wire would be better than a dead 3 wire 
though...
-- 
Joshua Van Tol -- josh at spiny.com



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