bad o2 sensor

[crushedout]

I have a 96 3.8 5 speed. I got a SES and the code was bank 1 sensor 3 low voltage. I forget the number, P147 maybe. The guy at auto zone said that was the sensor before cat but after searching on here I think its post cat. Can anyone clear this up for me?

When the SES light does light up the car bogs down and feels like I have no power. Would an O2 sensor do this?

How often should an 02 sensor be changed? The guy at Autozone said they were the same sensor before and after cat so if its a post cat problem I figured I'd order a sim and replace the pre cat depending on how often they need replaced. Mines about 30k. Or I could go get my 70 bucks back. Will a sim fix the bogging down problem.

Thanks

[crushedout]

Re: bad o2 sensor

anyone.....?

[Den69RS96]

Re: bad o2 sensor

I think your bogging problems will go away after you replace your bad 02. o2 sensors last a while, but do go bad every now and then. I know people who replace them only when there bad and others who replace them at 100,000 miles. I replaced some o2's in my z24 at 100,000 and I noticed no difference in performance or mileage. Based on my experience, I would just replace the bad one and be done with it.

[slow6]

Re: bad o2 sensor

I believe the auto stores say to replace them every 60k