Wide Ratio Bosch O2

xxalexx at ix.netcom.com xxalexx at ix.netcom.com
Tue Jan 12 02:52:53 GMT 1999


> Thank you for the SAE paper number Bruce. If I come up on something else
> considering O2 sensors I will post it.
> I have lately come up to some very strange Bosch O2 sensors fitted in
> 1997- model VW and Seat. They look like standard foor wire sensors(2 for
> heater, 1 signal, 1 ecu ground) but when I tapped into the signal line I
> saw a range of 0-1500mV and not the usual 0-1000mV. I thought that the
> this 1 Volt range was the limit of the ceramic element's capability to
> create voltage. Though these sensors are not wide ratio I remain
> puzzled.???
> 
I had some strange 0-3volt readings from a early 90's euro toyland 
cruiser. Most likely a resistive sensor.
alex.
  



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