Oxygen sensors

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Mar 17, 2008 | 01:53 PM

#11

Danthurs

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From: Sheboygan Wisconsin

Quote:

Originally Posted by EWC88

Also you can go to Autozone and they'll let you rent there free, you have to give them like 10-20 bucks but you'll get your cash back when you return it, otherwise you just bought it lol...Also looking in I belive the General info thread they give a discount price from that site, I'm going be ordering my rear in 5 mins..

Andrew the one that says DENSO Part# 2344018 the one I would need for the rear one by the cat?
http://www.rockauto.com/catalog/raframecatalog.php?

2344018 is your front sensor, the one in your manifold. The one you need for after the cat I belive is this one STANDARD MOTOR PRODUCTS Part # SG277 It says downstream. So if that'* the wrong one, someone speak up. Why are you changing your rear sensor? Is something wrong with it? From what I understand you only need to change it if your getting codes.

Mar 17, 2008 | 01:58 PM

#12

EWC88

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From: jersey

Quote:

Originally Posted by Danthurs

Quote:

Originally Posted by EWC88

About a month or 2 ago my SES came on, went to Autozone they scanned it and it said rear cat o2 sensor, so I bought a sesnor from them ( BOSCH ) didn't know that that wasn't a smart buy and the light is still on, cat is fine so its probably the sesnor still. SO I'm going buy a Denso sensor for the rear and now I'm thinking of doing the front as well because that has never been change and it has 120,000+ miles on it

Mar 17, 2008 | 02:06 PM

#13

Danthurs

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From: Sheboygan Wisconsin

Quote:

Originally Posted by EWC88

Quote:

Originally Posted by Danthurs

Quote:

Originally Posted by EWC88

OK, got it. As long as there'* a reason. Ya, the front one could use a change. Front will take you about 15 to 30 mins to change depending on if it comes out easy or hard.

Mar 17, 2008 | 04:43 PM

#14

Mark Fahey

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A good soaking with PB Blaster helps getting it out.

Mar 17, 2008 | 07:14 PM

#15

wjcollier07

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Quote:

Originally Posted by *B2*

Should these be replaced after a recommended amount of miles? My car isn't showing any serious symptoms but I think my mileage could be better and I don't think its the plugs.

Approx 30k for 1 wire unheated, ~100k for 3 or 4 wire heated. And it won't show symptoms for a good while..and by that time, you might have done some unnecessary damage to the emissions system, cat, etc.

On a system with an upstream and downstream, or dual, only replace the upstream, the downstream is there for the express purpose of throwing a code when the cat is no longer doing its job within spec, which usually means its clogging, and time for replacement.

Only use AC Delco or Denso sensors. ONLY.

These can be purchased at GMPD (confirm part number) or rockauto.com. eBay is also a good place to find one at a lower cost.

Mar 17, 2008 | 11:20 PM

#16

famouslee99gt

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I also need to change my upstream o2 on my '00 SSEi because the car has 138k miles on it and had a previous blown intake (which may have caused the sensor to be coated in coolant. I was searching around and at O'Reilly Auto Parts, they offer a Delphi. Isn't Delphi in relation to AC Delco? Will a Delphi be acceptable?

Another thing, I swear I heard a guy I know, which is a technician at a GM dealer, has said that Bosch is making GM'* o2 sensors now. That is what I heard, I'm not sure if it is true or not.