What Bosch O2 NOT to buy (4 wire universal)

[turboglenn]

If this is the wrong area, please feel free to move it. Or just notify me, i just felt this was probably the only area it would fit besides in "tech" nad it's not a true "technical post", so if this is wrong of me, i appologize in advance.

I just wanted to warn people that buy "generic" 4 wire o2 sensors about the crappy performance of the one i bought today.

It the bosch 4 wire part # 15730 and it's switching is completely retarded slow, and it's the least accurate narrow band i've ever seen as far as when you deviate from 14.7:1

They had 2 options in 4 wire universals: A 68 dollar one that looked normal, and this one which was just a tad bigger and bulkier, but 11 dollars cheaper. So, i figured it'd be fine since it was just a 4 wire and it's only job is for closed loop driving. Well NO, it can't even do that right. It cycles so slow that the correction the ECU is making can actually be felt like a lean surge would. I'm taking it back tomorrow (O'reilly's people aren't eh smartest, but they'll take anything back for me ) I could program teh ECU to work with it, but i'd rather have a more reliable sensor anyway.

At 14.7:1 , it's stoich voltage or reference voltage is .600mv

At 13.5:1 , it goes off the scale at 1042mv

And, when at 17:1 , it's all the way down to 100mv and less..

Lesson here: Spend teh few extra bucks and get the better sensor when you have a choice and there's no explainable reason why one is cheaper.

This thing is so bad i can't run closed loop at idle with it ( idles better in open loop anyway)

and anytime i'm driving and cruising steadily for a minute or 2 you can feel the corrections being made. One day i'll map every cell to hold 14.7:1 on the nose in the light load areas, but driving and tuning by yourself is DANGEROUS and i don't like doing it and didn't have a driver for todays session of upgrades/repairs/tuning.

 

[diggerzmound]

Good information, I have heard more then one person say not to buy one of the universal sensors.

Nice looking car you have there too!

 

[TurboAnything]

i got a 3wire for my sr20det and it wont even produce 5 volts it sucks. I was very upset considering it was a replacement when i had a bunch of work done now i have to try anotherone.

 

[1993gsxtalon]

I got the bosch o2 regular(not universal) and it works great, its tough against manifold heat.

 

[hereitcomes]

The regular bosch (OEM equivilant) is good. It works like a charm. However the universal one is junk. You have to make your own connections, and it did not work nearly as well as the bosch. I still had a CE light on after I installed the Universal one.

 

[turboglenn]

I've always used just whatever o2 sensor that was cheapest that had 4 wires. i've never run into anything like this in the past. But i only got bosch because there were no 4 wire ngk's at either local parts stores. I'll probably try teh other universal on by them and see if it's any better. If that one is as inaccurate as this one, i'll make them order me an NGK

 

[spyderturbo007]

You can get OEM, plug and play, sensors from Spark plug, Spark plug wire, spark plug gap, spark plug cross reference and ignition wires at Sparkplugs.com for dirt cheap.

What the $#*@ is going on with my link?!?!?! I have no idea why it's doing that. Sorry.