42 bucks for the upstream, 22 bucks for the downstream.
When they first came out with oxygen sensors, averaged around 30 bucks, but didn't have heaters, didn't last very long, lucky to get around 30K miles. Worthless until they hit around 350*F that shifts the computer from open loop to closed loop mode. EPA got the weird idea of adding Heater to it. Only added a couple of hundred BTU's of heat to it, already being hit about 1,300-1,500*F heat from the engine exhaust, so only cut the delay by a few seconds.
But every little bit helps, right? But adding the heating element, average price of these more than doubled.
This is the connector view, Pins 1 and 2 should show around a couple of ohms of resistance, if much greater, heater element is burnt out.
Catalytic converter is also worthless until it heats up, wanted us to add an electric heater to this as well. We couldn't come up with an alternator large enough to supply the power demands to heat this thing up, so suggested we just spray gas in the cat, but the DOT wouldn't hear about this.
So the EPA went to the oil companies to come up with what they call winter gas. But is also has some very negative side effects. On taking the same long winter trip, using anywhere more from 20-25% more fuel, this has to have some negative effects on the atmosphere, sure is on our pocket books.
What we really need is an EPA with some brains, they can't solve problems, just fine and ship our industries overseas. You would think they would wise up since we are no longer talking about local conditions, but now, finally, global.
Can't argue nor even discuss issues with the EPA.
If you can read that PO 0420 code, can reset it to see if it comes back. Can also be a glitch.
