P0171 - Page 2

-Alero- · 06-04-2009, 08:16 PM

of course to answer first question

umm your upstream is right bnext to your coil packs its a very short one its the cheapest, as you know we only have 2.... and i believe they are all on the Bank one side cylinders 1 3 5 side.

-Alero- · 06-04-2009, 08:26 PM

http://www.gmpartsdirect.com/catalog/frameset.cfm
(change year accordingly)

http://store.summitracing.com/egnsea...115+4294859014

(apparently they dont have acdelco)

cherrington17 · 06-04-2009, 08:26 PM

so in the pic... it would be best represented by bank 2 sensor 1?

right near the coil packs?? hmm.. so swapping it out is no problem?

cherrington17 · 06-04-2009, 08:27 PM

Quote:

Originally Posted by -Alero-

http://www.gmpartsdirect.com/catalog/frameset.cfm
(change year accordingly)

http://store.summitracing.com/egnsea...115+4294859014

(apparently they dont have acdelco)

it looks like the local autozone might have bosch ones, in stock. and my bro gets a discount... so i'll probably go that way.

so borrow the tool, get it out, put new in, relink the wires and i'm done? is it really that easy?

-Alero- · 06-04-2009, 08:30 PM

errr check my links, but the only tool you need is a "sparkplug socket" every single auto parts store sells them, they are 9/10 a universal size. all you need is that socket and the drive wrench and its cake, the sensore will come with lube and everything for you.

trust me the upstream is a walk in the park, direct plug in play. Also Deep Creep spray by the same people who make Seafoam, works terrific for loosening up the bung...hole

stay away from bosch O2 sensors and spark plugs.

cherrington17 · 06-04-2009, 08:38 PM

only need a sparkplug socket? got like.. 4 of those.

not that i don't trust your judgement, but can someone else chime in on the bosch O2 quality? I'd really prefer to just pick one up in a store, rather then order and wait... (i know the bosch s.plugs are garbage in our engines)

plus.. paying like... 50 or 60 for the plug beats the 100 for acdelco.

-Alero- · 06-04-2009, 08:41 PM

yeah if i recall years back someone was ranting about how they got into a mess of problems.

ive never used one im sure you can buy one and see where it takes you autozone is very forgiving and can probably take the return if you run into a problem and want to change

cherrington17 · 06-04-2009, 08:45 PM

especially since family works there.

-Alero- · 06-04-2009, 08:47 PM

wont hurt, like i siad worse case scenario they will take it back and all yo usay is "it didnt work"

Redog · 06-04-2009, 08:53 PM

Quote:

Originally Posted by cherrington17

which does our car have for the upstream? i'm thinking its the one after the join from the front/back (in the pic) bank 1 sensor 2?

We only have the Bank 1 Sensor 2 and Bank 1 Sensor 3 as they are labled in this pic.

You said you have a totally stock AFPR? So you have a Stock adjustable FPR?

cherrington17 · 06-04-2009, 09:01 PM

yep. its definitely the stock adjustable.

smartass...

ok.. so as per the pic (that apparently isn't close to legit) am i going to get the sensor from over the engine, or underneath?

-Alero- · 06-04-2009, 09:14 PM

cherry - its in plain sight it looks liek a big spark plug haning out of the top of your rear exhaust near firewall, its to the left of your EGR and in plain sight im telling you its a walk in the park to change.

Redog · 06-04-2009, 10:37 PM

Quote:

Originally Posted by cherrington17

yep. its definitely the stock adjustable.

smartass...

ok.. so as per the pic (that apparently isn't close to legit) am i going to get the sensor from over the engine, or underneath?

You said it buddy

Yeah it's not that hard to get to if you don't have the stock air box. I can see my O2 sensor from the front on the engine (left side of the car

) and reach it pretty easy from there. If you have a stock airbox, laying on the top of the motor may be the option. Actually looking at hte pic, it looks pretty close to where it is

it will say 3400 SFI on your belly when you are done

cherrington17 · 06-05-2009, 12:17 PM

good LORD its easy to get to!

wd40 is soaking in, hopefully it won't give me any trouble getting it out.

i also thought i was going to be cutting splicing wires. pfft.. this is cake!

lvemy3100 · 06-05-2009, 12:46 PM

I can vouch for the fact that bosch o2 sensors are crap

Denso or AC Delco are fine (iirc the Delco's are made by denso.. could be wrong though)

cherrington17 · 06-05-2009, 01:09 PM

well.. i have a bosch in there now. I'll give it a shot (it was the only in stock) Probably end up ordering one from rock auto, if this one doesn't drop the code

cherrington17 · 06-07-2009, 12:10 AM

ok.

cleaned MAF, then disabled the code.
Code came back.
Replaced upstream 02, disabled the code.
Code came back.

What connectors am i checking for vacuum leaks? How do i check injectors?

Nate's Alero · 06-12-2009, 08:41 AM

i would run STRONG injector cleaner through it, the ride from WNY will be good for it,

and im sure someone, (like me) can have a look, i did all new injectors on my ho... and i think the old ones are alright..

cherrington17 · 06-12-2009, 08:59 AM

this weekend i'm testing a new MAF... see if that works. I did throw some injector cleaner into it. But i've always used the same gas, from the same place... never had an issue.

Nate's Alero · 06-12-2009, 09:01 AM

Quote:

Originally Posted by cherrington17

this weekend i'm testing a new MAF... see if that works. I did throw some injector cleaner into it. But i've always used the same gas, from the same place... never had an issue.

if not, check the UIM seal, mine was bad, and i found out that both the "ears" on my LIM broke off, check that out, get some starter fluid and spray around the UIM, LIM and EVAP hoses (little green screw on cap near the main fusebox, thats the canister)