My question about the 02 is that I find both AC and Delphi, is there a difference?

 

From what I was told by the mechanic, that they are pretty rough but he has personally driven on far worse and that I shouldn't have a problem with normal driving, if I go off road or do a lot of driving on dirt roads with bumps that they will obviously give that much quicker.

As long as they last me a few more weeks I can deal with it , as for these other methods, I can't really dedicate that much time to the blazer right now, I am going through some family bs and have to clean out my old house and get it ready to list up for sale , so I may just bring it in , and have them repair it at the shop, But im gonna call around come Monday morning and see if i can find somewhere that will do it a little cheaper .

As for the o2 I am getting a Bank 2 sensor 1 code (po155), so which 02 would that be , I am thinking of picking one up today, but not sure if it has more than 2 sensors .

Chi_Town

 

(1) Heated Oxygen Sensors (HO2S) Bank 1 Sensor 2
(2) Heated Oxygen Sensors (HO2S) Bank 1 Sensor 1
(3) Heated Oxygen Sensors (HO2S) Bank 2 Sensor 1

 

Thanks for that diagram Porkfriedrice.

So if I've read things correctly that sensor that I need is the one that will effect my MPG the most ?

 

And other than Ac Delco , would Delphi work? I don't understand how the 02 would be that much different in regards to AC, from what I've read the AC delco design was purchased by Bosch back in 04 but I don't know how truthful that is .

 

AC Delco & Delphi are the same. Denso is what was in there originally and they are less expensive and have a faster response time than AC Delco & Delphi sensors.

 

So any of those 3 should theoretically work just fine ?

 

Take your pick, they're all fine.

 

Buy Denso Oxygen Sensor Direct Fit 234-4343 at Advance Auto Parts

Would that be the one I need ? And is there a difference, if it's heated or unheated ?

Chi_Town

 

The Advance website is not real clear on oxygen sensors, (it says "downstream") but that's the one you need. And yes, it does have a heater.