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the_lude
09-18-2005, 07:39 PM
Hey guys. If you remember a while back. My car was pulling the p0300 code. I dealt with it for a while, then i swapped out the plugs for new ones to see if it would help get rid of the code. It did, but now my car is pulling the p0171 code. (system too lean (bank 1) ) I don't notice any loss in power, but it keeps coming up and I'm just deleting it with my scanner. When i installed the plugs, I had the negative battery terminal disconnected. Would that have messed with my settings on the SAFCII? Thanks for the info

EVOate909
09-18-2005, 07:42 PM
no it wouldn't erase the setting on ure safc...
the only way it will be erased is if its "initialized"

on the lean thing..i do get this code aswell
its usually jus richen up a lil bit on partial throttle

GokuSSJ4
09-18-2005, 08:57 PM
what it's your set up ???
is it on partial throtle or on WOT ??

the_lude
09-19-2005, 08:45 AM
Hey Goku! You actually gave me some advice when I posted about the p0300. I was going to go to the dealer to get my ecu reflashed, but I didn't feel like pulling everything off after just having the parts installed and the car tuned. I spoke to tony at RRE about p0300 and he said the car should be fine. It's just an annoyance.

Anyways...I have the dr.grey package.

264/272
720cc injectors
walboro fuel pump
tbe..well the downpipe is currently off at the moment
intake
SAFCII..wasnt tuned by grey, but roy.
dejon mbc, i believe roy set it at 22? maybe 21.
boost gauge
bov sitting on my desk. the stock one is on for now.

GokuSSJ4
09-19-2005, 08:51 AM
are you having problems @ idle, partial or WOT throtle ??
Also do you have a flash and had the SAFC tune with it ??

the_lude
09-19-2005, 08:55 AM
No, no problems at idle. idle still sits between 900-1000? i forget whats normal. it doesnt hesitate at partial throttle and at wide open it goes into full boost without anyproblem.

No, my ecu was a virgin.

GokuSSJ4
09-19-2005, 09:17 AM
so, when are you receiving your p1071 codes then ???
because you might need to adjust your SAFC settings...

the_lude
09-19-2005, 11:31 AM
I started recieving it after changing my spark plugs. Soo..it might be my spark plugs? If it comes on, i usually erase it when I park somewhere...then it comes on about 30-40 miles later?


Haha. I don't think I want to mess with my SAFC just yet. I mean. I do beleive you that adjusting the settings might fix the problem, but I don't want to screw up any of the settings that are on there now.

I'll give the car a few runs and get back to you if I've noticed anything different.

GokuSSJ4
09-19-2005, 11:38 AM
you also need to look or pay attention to when are you receiving the lean codes.. If the codes are on partial throtle then your Lo TH settings need adjustment, especially in the rpm area need it. Changing your Lo TH setting don't affect your Hi TH setting which is @ WOT and doesn't affect the way the car performs...

the_lude
09-19-2005, 11:57 AM
I mentioned it comes on 30-40 miles after clearing the code, that's normally on partial throttle between 2,500-3k rpms. I haven't been boosting lately due to gas prices. So you're right that it might be the settings in the Lo TH area.


It's just weird how the code started appearing after I changed the plugs.

GokuSSJ4
09-19-2005, 12:03 PM
The reason i ask, because i had the same issue.. try to drive around the same rpms range to see if you can trigger the code again. If thats the case then you need to adjust your Lo TH settings by adding more fuel in those areas.. you don't have to radical changes in you Lo TH map , and you can always write what your previous settings were prior to changing anything. Since thats how i was able to solve and that was also the advise that i received from Scot G and Mike W.. I figure that they know the SAFC better then most folks around here and it's also common sence..

the_lude
09-19-2005, 02:09 PM
I'll monitor it, I'll let you know what happens, then I'll try to adjust the settings myself.

Coolguy949
09-19-2005, 02:25 PM
That code is because your lo throttle needs more adjusting. Your long term fuel trims are out of range and it's throwing a code. The engine is having to compensate too much to keep the AFR at 14.7 because of the larger injectors.

Remember, the SAFC lies to the ECU in to thinking it's running too rich, thus making it adjust leaner. Even though the ECU will always try to maintain a 14.7 AFR in closed loop (lo throttle), the SAFC still needs to be adjusted to keep the fuel trims within range. When they go out of range it throws the check engine light. Your car is running fine, it's just an annoyance because of the CEL. The only way to get rid of it is to re-tune the low map.

the_lude
09-19-2005, 09:50 PM
Goku and Rob, these are the lo TH as follows


1000 -4%
1600-5200 -20%
5800 -19%
6400 -18%
7000 -17%
7600 -16%

If any of you guys want to chime in and give me some advice I'd be more than happy to hear it. You guys have been a big help.

GokuSSJ4
09-19-2005, 10:34 PM
Goku and Rob, these are the lo TH as follows


1000 -4%
1600-5200 -20%
5800 -19%
6400 -18%
7000 -17%
7600 -16%

If any of you guys want to chime in and give me some advice I'd be more than happy to hear it. You guys have been a big help.

you can try within your 1600-3600 -15%
3800-5600 -17%
you can play with it to see what results you achieve, if you have an Air/Fuel gauge works best.. Since thats how i adjust it mine...

the_lude
09-19-2005, 10:47 PM
Yeah, thats normally the range i stay in on the freeway. I'll give that a try tomorrow. I'll let you know how it goes.
Thanks Goku.

GokuSSJ4
09-19-2005, 10:49 PM
no worries, please take note if your AFR gets too rich (it shouldn't) since the adjustments are not drastic ... but you can tell how the car runs .. or at least i can :P

the_lude
09-19-2005, 11:03 PM
HAHA. yeah, I don't have an a/f gauge just yet. I still need to pick up an EGT gauge so I can get the car fine tuned. O0

GokuSSJ4
09-19-2005, 11:54 PM
HAHA. yeah, I don't have an a/f gauge just yet. I still need to pick up an EGT gauge so I can get the car fine tuned. O0

it always helps !
look into the www.zeitronix.com IMO the best option... on my new 05 that willl be my choice O0

the_lude
09-20-2005, 08:37 AM
Yeah, I was thinking of purchasing the zeltronix unit as well. It seems like a good buy overall.

Anways, I adjusted some of the settings this morning before I left for work. Which is where I am now.


I adjusted it beween the 1600-3800 range. I brought it up to -17%, then at -18% in the 4000 range...if I remember correctly. The code was up yesterday. I filled up on gas. Erased the code, then drove home. 30 miles after adjusting it, no light....yet. I'll keep you updated Goku when I get home. Around 330ish? Thanks for your help again and thanks Rob for the input. You guys rock.

GokuSSJ4
09-20-2005, 09:16 AM
no problemo !! O0

the_lude
09-20-2005, 04:27 PM
70 miles and still no code. That was staying in the 2k-3k range. Hopefully it doesn't come up again. I'll keep this thread updated.

TuningTechnologies
09-20-2005, 07:26 PM
The issue is definitley a function of the SAFC's low throttle settings. You have the lo settings too lean......Dont worry about them not being the sam as others.....Just keep the ecu happy. Its much smarter than what anyone else tells you is goin on with the cars Air fuel. What year is your car? Have you had the SAFC tuned yet? Was the low lap tuned or kinda guessed on? Good luck

the_lude
09-20-2005, 10:48 PM
The issue is definitley a function of the SAFC's low throttle settings.* You have the lo settings too lean......Dont worry about them not being the sam as others.....Just keep the ecu happy. Its much smarter than what anyone else tells you is goin on with the cars Air fuel.* What year is your car?* Have you had the SAFC tuned yet? Was the low lap tuned or kinda guessed on? Good luck


Hey! I don't know your real name, so I'll refer to you as TT..if that's alright. It's a 2004, it was tuned by Roy from RRE..well he doesnt work there anymore? He used his laptop as well, I'm suppose to go back once I get an EGT gauge so he can fine tune. Which is something I should purchase soon. If I were to get the zeltronix unit, would you be able to install and tune?

Oh yeah, Goku, my sister drove the car yesterday and the light came on again. I'll scan the code sometime tomorrow and let you know how that goes.


Just when I thought it was over..hahaha :D

Blak94GSX
09-20-2005, 10:54 PM
On the LO map, set the 1000 to +10, then 0 for the next RPM step, then -4, then -10, then probably -14 from there up, but whatever you want...

the_lude
09-21-2005, 09:01 AM
Hey Black, I'll try you recommendations when I get home today. I didn't drive the evo, I took my box car. ha.
I know you're always looked up to on this forum, so your input is greatly appreciated. I'll let you know how it goes.

the_lude
09-23-2005, 08:36 AM
On the LO map, set the 1000 to +10, then 0 for the next RPM step, then -4, then -10, then probably -14 from there up, but whatever you want...



Just a quick update to black and Goku. I've adjusted the settings, I'll post another update later today.

EVOate909
02-13-2006, 04:03 PM
On the LO map, set the 1000 to +10, then 0 for the next RPM step, then -4, then -10, then probably -14 from there up, but whatever you want...


is this a good setting???

leaveit2bevo
02-13-2006, 07:24 PM
im at +14 at idle

wj4
06-02-2006, 11:21 AM
is tehre an update to this issue? i threw my first po171 a week ago, cleared it. it was fine until today..almost 7 days later and it popped up again. i had the LO TH richened up but it still threw the code.

Blaze
06-02-2006, 11:31 AM
You should adjust your LO setting based on STFT and LTFT readings. It's going to be different for every car (dramatically different depending on your injector size).

I'm not certain how where you richened your setting or by how much.
The best thing to do is reset the ECU and re-log each NEO point.
I've been meaning to do a write up on this. However, if you check evotuners.net I think there's on there by TurboLarry.

Also, keep in mind that there are other reasons a car could through this code. (SAFC settings are just the first/obvious place to check)

Blaze

TrickedOutEVOVIII
06-02-2006, 11:40 AM
heres the link to larry's write up on afc tuning...i read through the whole thing, and i can honestly say that its the foundation of everything i've learned about tuning to date...

http://evotuners.net/forums/showthread.php?t=315

heres another awesome write up by our very own Blaze that i thought was very very helpful!

http://www.socalevo.net/forum/index.php?topic=16034.0

good luck!

T

Blaze
06-02-2006, 11:59 AM
Mine does not address LO settings.
I believe Scot wrote one that did.

I see you watching this thread, Scot.
Where is it?

Blaze

Blak94GSX
06-02-2006, 10:06 PM
It used to be stickied. It sorta disappeared about a year ago.

evorocks
06-03-2006, 10:37 AM
Along the same lines as Blaze comment it could be a dirty MAF sensor tripping the code..................