Did you buy it with a credit card? Dispute the charge. That will get their attention.

They have the thing listed as working for a 92-95 non-california civic vx...I would dispute and file a claim...bs company.

Thanks Bobski. I was having a hard time finding the relevant page. Well, the CEL doesn't come on when I do the 1500rpm test in 3rd gear.

I have been driving less efficiently this tank, yet I first went below 1/2 tank at 270 miles compared to last tank at 275. Anyway, seems the next step I need to do is lots of testing via this manual. But I can't say I feel too comfortable doing it. Not sure I want to ask my mechanic as I think he is not interested in humoring me as it were. I still haven't installed my ECU. Never got a chance today. But doesn't seem like it's too hard. Maybe tomorrow I get to it! Then at least the ECU will have been reset.

They're totally wrong about the LAF and o2 sensor being "different parts" right? The o2 sensor is the LAF, correct? There is no o2 sensor and LAF in my car, right?

Here's the auction link SVOboy:

https://cgi.ebay.com/ebaymotors/ws/eB....cWON.m313.lVI

Here is what I have written in the reply (I haven't sent the reply yet.)

I had the mechanic install the part for me. I purchased a 5 wire o2 sensor designed for the 1992-1995 Honda Civic VX with lean burn VTEC-E D15Z1 non-California motor, which is what my car is. I watched the mechanic install it.

Should I add that the car does not have a separate LAF sensor and that the code is referring to my o2 sensor?

Yeah, I did. I mean, I purchased with a credit card. I haven't disputed the charge. I want to keep nice with these guys and not resort to those tactics until necessary.

Just say that you bought it for a 92-95 D15z1 non-california civic. Don't mention anything about lean or LAF since they are obviously fools or liars. Mention they have a 1 year warranty on defective parts. Also mention that this was the only change made...

Right. The LAF is an oxygen sensor with a linear response curve. Typical 4-and-less wire O2 sensors are collectively known as lambda sensors. They have an essentially flat response curve until you reach 14.7:1, where it makes a very steep transition from 0 to 1 volts. Both sensor types depend on oxygen content in the exhaust to generate a signal... They're oxygen sensors.
Newer ('96+) Civics have a second oxygen sensor on the downstream side of the catalytic converter. In the case of the '96-00 Civic HX, it may use both an LAF and a lambda oxygen sensor... Your VX should have only an LAF.

I have little doubt that many of the people that buy these fake sensors have problems and try to return them. The company's well aware of these problems, possibly before they started selling the products, and are just trying to BS you out of your money. Welcome to ebay.

Uh, I don't think they get it. Tell them the VX uses an L1H1 oxygen sensor and that their ad or auction was for an oxygen sensor for that car. It does not work. And tell them you had a mechanic do it so they can't get ya on that.

Gary

Also, don't use LAF, just talk "oxygen sensor". It will confuse them. When you say "LAF" they think you're using it as part of an aftermarket AF device.
Gary