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View Full Version : Getting P0171 and P2195


Apex i ITR
10-23-2009, 07:16 PM
So I have read previous threads to this one and have taken them all into account. It sounds like my front O2 might be bad but one thing bothers me.

My car has some issues starting in the morning after its sat overnight. I worked with my tuner to try and resolve it but I kinda gave up since the car runs good in other areas.....when i say problems I mean I have ot let it crank maybe 3 or 4 more seconds then normal for the car to start up.

This morning I started the car up and moved it out of the garage and it died. I started it up again and it revved a little higher then normal and then died. I started it up a third time and it was acting like it was goingto die but I gave it more gas and it idled a little high but didn't die. I noticed it ran a little rougher then normal but thought it was all in my head.

Then this afternoon I parked outside my work building and left the car idling for a few minutes and it threw theses codes on me. I forgot my laptop that I use to tune and pull codes so I drove home gingerly until I could pull the code. I cleared it already so I didn't check the freeze frame info to figure out what fuel trims were but this car has been tuned and not touched for the last month and half. I've driven 650 miles to Orlando and back with no issue.

The motor has about 30k on it and its the original plugs. I've have been debating replacing and possibly even going one step colder on the plugs since I run E85 almost exclusively.

I know it seems the general consensus is that its the tune or a bad o2 sensor but considering the fact that this car has been running perfect for the last few months I wonder if my plugs could have something to do with it.

Its raining now and I have to grocery shopping with the kids so iwas going to look at it tomorrow and take my wifes' is300 tonight.

What do you guys think? I'll take the plugs out and examine tomorrow but if it sounds like the plugs may be possibly bad then I'll just go ahead nad bite the bullet and buy plugs tonight.

shunderwunder
10-23-2009, 07:35 PM
I'd reccomend new plugs either way. Plugs don't last too long in Evos. Come to think of it I need new ones too.

StrScrm
10-23-2009, 07:50 PM
I'd reccomend new plugs either way. Plugs don't last too long in Evos. Come to think of it I need new ones too.

Wanna do mine while you at it???.....lol

Apex i ITR
10-23-2009, 09:04 PM
You can duu it on your own.

shunderwunder
10-23-2009, 09:15 PM
You can duu it on your own.

prolly not :D

StrScrm
10-23-2009, 09:32 PM
Actually I can do et on my own! But nun wrong wit free labor....lol!!

shunderwunder
10-23-2009, 11:10 PM
Ain't nothin free bout my labor. Youz better be bringin cheezburgerz if you want any werk outa me. :D

bomjoon
10-23-2009, 11:36 PM
mine is overdue... 5000 miles on same plugs...

StrScrm
10-23-2009, 11:38 PM
Bet!!!!! Food on me....lol!!

bomjoon
10-23-2009, 11:40 PM
Ain't nothin free bout my labor. Youz better be bringin cheezburgerz if you want any werk outa me. :D

id be scared to let andy touch my cah.

lol

shunderwunder
10-24-2009, 12:08 AM
id be scared to let andy touch my cah.

lol

Good thats one less car i gotta werk on :D

Apex i ITR
10-24-2009, 12:58 AM
I guess then that having about 10k on the clock since I've owned the car on the same plugs running E85.....not so good hunh. LOL.

Apex i ITR
10-24-2009, 11:54 AM
New development: only comes on now after I start the car after I clear the code it doesn't come back on and it's only the p0171 code. Looking for own ngk's today and looking for an own O2 sensor on the low. I don't think it's the O2 sensor or else the other code would come back on. Also the tube was fine for 2-3 months so I have a hard time it's that as well. Still think it's the O2?

em1toevo
10-24-2009, 06:19 PM
I just replaced my plugs (NGK BR8EG). My car feels like new again. It's easy to forget how quickly the plugs go bad.

Apex i ITR
10-24-2009, 07:01 PM
Where can I get them (either OEM style plugs or 1 step colder), Denso or NGK's locally. Anyone know of a place that sells them pre-gapped.

TouringBubble
10-24-2009, 08:24 PM
Log the O2 Feedback Trims to verify the function of the front O2. It should be 0 on a cold start, and then fluctuate rapidly back and forth by 10% or so at idle and light cruise. If that value hangs on a single digit for a while at idle or cruise, then the O2 is going. Going to 0 and holding under throttle is normal, as that means the car is in open loop operation.

Pull a plug and check them before spending the money to replace them. They should last about 50k unless you literally beat the crap out the the car constantly, which I know is not the case on yours.

Also, try running a tank of 93 through the car and maybe a SeaFoam treatment. E85 can mix with the oil from the PCV and ERG systems and cause sludge to build up in the runners and the valves. 93 has more detergents for preventing and cleaning this, and SeaFoam will help. You can add SeaFoam to the fuel and directly to the engine via the brake booster line.

(Sorry, my internet has been out since Thursday and I didn't see the thread)

shunderwunder
10-24-2009, 08:39 PM
Log the O2 Feedback Trims to verify the function of the front O2. It should be 0 on a cold start, and then fluctuate rapidly back and forth by 10% or so at idle and light cruise. If that value hangs on a single digit for a while at idle or cruise, then the O2 is going. Going to 0 and holding under throttle is normal, as that means the car is in open loop operation.

Pull a plug and check them before spending the money to replace them. They should last about 50k unless you literally beat the crap out the the car constantly, which I know is not the case on yours.

Also, try running a tank of 93 through the car and maybe a SeaFoam treatment. E85 can mix with the oil from the PCV and ERG systems and cause sludge to build up in the runners and the valves. 93 has more detergents for preventing and cleaning this, and SeaFoam will help. You can add SeaFoam to the fuel and directly to the engine via the brake booster line.

(Sorry, my internet has been out since Thursday and I didn't see the thread)


Good info. Glad I deleted my PCV & ERG when I was doing my build since I'll be running E85 eventually too.

Apex i ITR
10-26-2009, 03:16 PM
No codes so far (all the stores were closed last night) but no codes yet (I was messign around with my JDM rear so I haven't checked my plugs yet. Who carries them locally (Autozone by me doesn't).