Elle wrote:
> My Denso O2 sensor purchased from the site above is still
> going strong (on my 91 Civic) after 2.3 years, 31k miles.

Good to know--thanks!

> Borrow an O2 sensor wrench from Autozone. No charge,
> overall. I think mine is 22 mm or 7/8-inch.

In NYC, I dunno about no charge... But ya know what? If the O2 sensor
wrench saves me from having to remove the heat shield, it's worth the
$10 automedicsupply sells it for even if I use it just once. I'm still
saving $100+ over getting the OEM from e.g. Majestic, *without* the wrench.

> That the OEM one from Manchester Honda went bad at 4 years,
> 40k miles is surprising. You sure you are taking all the
> appropriate precautions with these? Getting any kind of gunk
> on the probe will foul them, for one.

duckbill had the failed OEM sensor, not me. I'll definitely be sure to
keep the anti-seize off the sensor, though. Anything I should be looking
for on the inside when I have the sensor out? "Bad" residue or somesuch?