EGO clogging.

[Craig Pugsley]

Hi there,

> You can do it, for maybe a 100 miles or so before the EGO's are totally
> shot.

Is this because the sensor gets 'coated' with lead like a catcon, and
can take a tank of leaded every now and again without damage, or is it a
cumulative effect?

Also, two more EGO sensor questions:

i/  We all know the 'characteristic curve' of an O2 sensor, but how much
    effect does the actual exhaust temperature have on it's accuracy,
    and also does a HEGO have some way of regulating it's temperature?

ii/ What about electrical effects changing the sensor's voltage? eg
    thermocouple effects between the exhaust and the engine. Should
    the sensor be used in a 'balanced' set-up.

Craig.