Zachz28

I am wonder if any one has used Bosch o2s and not had them suck?
Right now i have both boschs and i wonder if thats y i only get 200 miles to a tank on a good week with my 2.73 gear

Lt1t56

I used them for a while with no problems until Seafoam was the death of them, now I use AC Delco.

Zachz28

what kinda gas mileage do you get?

Lt1t56

The Bosch didnt affect my mileage, was still around 20 driving normally.

383TransAm

I haven't had any problems and I have had mine for 2yrs

Fastbird93

I used them for a couple of years, then switched back to AC Delco. I never had a problem with them.

smokin5s

I put bosch in my car and now I'm getting an O2 fail code.... Ya, I'd have to say, I think they are junk also... what do you expect for 29 dollar O2's

Type_O_Negative_1320

We just pulled a set of Bosch O2s out of my car after discovering that both of them were reading funny. The car appeared to be running lean on the computer...we added fuel until the O2s looked happy. Then the PCM would pull fuel until the engine stalled. Fought with it for about three hours before throwing in a new set of AC Delcos...everything was fine after that. I'm never using Bosch O2s again.

pHEnomIC

How do you know if your o2 sensors need to be replaced? Just curious.