[lendaddy]

I don't consider myself "cheap" in the slightest, if anything I am the opposite. That being said I've been keeping my older vehicles alive with these yards and have been quite satisfied.

Today I replaced 3 of the 4 O2 sensors in my Tundra for $7.50 a piece vs the $100 or so each they go for online new. They are easy to get to and remove. I snagged the two upstream off a couple of Camry's and had to swap my connectors but all in all it took maybe 45mins.

For those curious my research shows they are all the same(except wideband varieties) and easy to test. These were the 4 wire variety and testing is as follows.

First to test the heating element- of the four wires there are two that will be off the same color (usually black or white). Test for resistance between them, if none then the heating element is bad.

Then test the O2 sensor itself- find the ground wire (it's the one that has continuity between itself and the body of the sensor). Test for DC voltage between that wire and the remaining wire of the 4 while holding a torch over the sensor end. After a few seconds you'll start to see a slow climb to .1 volts or so, remove the flame and it will head back down to zero. If it does this the sensor is good.

Don't know why I bothered but maybe this will help someone.