fuel trims are way off...need to take some fuel away around the idle areas (fuel map) as well as any other areas that you are getting more than 15+-. excessive fuel trims will cause drivability to tank.


two of those codes you posted are for secondary o2 sensor...(136 & 13

p0172 makes sense..your fuel trims are off and it causes this code...get fuel trims in check and this code will go away, unless the primary o2 is damaged.

so what you want to do is bring up your fuel map, connect to fic via laptop, bring up fic gauges, bring back up the fuel map and the area (cell) your currently in will be highlighted (with car running). where ever that highlight goes indicates your position on the fuel map. that will help guide you.

now long term fuel trims take a bit of time to change but short term are quick to change...what i like to do is look at the ltft and if its sitting at -20 ill take away fuel till i see the stft at +15 then i wait to see the ltft start to wind down closer towards the positive. I try to get fuel trims within +-5...people will tell you thay can get it closer than that and they can but one little change in temp will change that. so its best to get it as close as possible and dont worry too much if the next day it changes to +-10. I used to be a stickler on getting my fuel trims to 0 but then i learned ill just be chaseing my tail that way.

hope this helps

 

fyi the fic doesnt just take the value that your in (highlight) it also takes a bit from the other cells adjacent to the one highlighted. so for the quickest change you can click and drag accross the cells around where you are at and highlight those. add fuel or subtract fuel as needed by right clicking, a menu box will pop up.

 

ok ill give that a shot tomorrow after work. as for the codes im thinkin the 02 codes are being thrown in conjunction w the rich code due to the fact that it cant correct it so its prolly throwin the monitors way off.

 

p0136 and p0138 are for your secondary o2 sensor (after cat), it may be damaged or you have an exhaust leak.

p0172 (primary 02 sensor, precat) is cause of excessive fuel trims.

 

ok chris, were back at square 1. lol.... mike (trd07tc) went out last night and were workin on the ltft. mike had it so that it was reading +3 across the board. i drove it around and everything was fine, altho i did notice my afr's were a lil jumpy but we think that was cuz of the ecu relearning the trims. this morning i checked my ltft and they were at -20 @ idle but under a load it was holding under -10. i went out for lunch and the second i pulled out the light came back on, and sure enough, same p0172 code. is it possible that the fuel trims couldve jumped like that even tho they were set before? i know theyll vary, but can it be that much of a variance?

 

i always get that code under idle. so it just might be the idle you have to worry about. mines rich because if i had it exactly where it was supposed to my motor didn't like it.

 

the thing that doesnt make sense is that fact that my fuel trims were on point as of last night and they made a drastic jump this morning.

 

that i do not know. maybe like you said the ecu didn't "learn" enough. me and my tuner sat in my car for like 20 minutes before we even got on the road lol

 

we drove around for like a half hour and they were holding fine. than drove home like another 15 mins, and checked my ltft's and they didnt move... than they changed this morning. i just dont get it. as of right now i reset the light and have the battery disconnected to see if maybe the adaptive values need to reset. idk well see what happens.

 

fuel trims will vary depending on alot of variables...such as ambiant temp...engine temp...coolant temp...intake air temp...so on and so forth. so when the car warms up youll notice your fuel trims are not the same as they were on start up or within a few min of driving.

 

after spending some time watching the tutorial for the 87th time, i came to find that there is an o2 table that wasnt filled out. if u go into the setup screen, in the o2 section click on view as afr, fill out the table corresponding to ur o2 voltage, then re-open the o2 map w the view as afr box still checked. what this does is basically spoof the o2 into seeing the desired target afr, this way the ecu doesnt try to correct the fuel trims. after setting this i have no cel (for now). im gonna see how this holds up and ill report back.

 

disregard my previous post. this info is incorrect. the view as afr table is just a different way of setting ur o2 table. im going to try and change the o2 voltage to correspond to the set fuel trims and take it from there. i apologize for anyone who attempted to try this bc it is def not the correct info.

 

so after countless hours into figuring out what the hell is causing these issues, i came to find last night that i have an exhaust leak between the hot side flange and the turbo. i couldnt really find it cuz its in between the turbo and the motor (which does get quite hot). i think the hot side may be a lil warped, and thats why its not sealing. my new turbo should be in this afternoon and ill take it from there.

 

that would do it

 

take the manifold off and use a straight edge on the flange. If its not too bad get it resurfaced

 

^^^ it wasnt the mani that was off. Its the hot side of the turbo that needs to be planed. I got the new snail on there today and it seems to be better. Afr's are holdin nice and steady. We just gotta make one more run out and tune it for boost.

 

Oh yea.... And so far no cel!!! I put about 50 miles and so far so good. Thats with 3 drive intervals.

 

Nice. Hopefully you can get the inspection out of the way.
What turbo did you get?
Hit me up when you want to go back out.

 

well, once again the cel popped back on this morning on my way into work, this time i had a p0172 (AGAIN!!!!) and also p0340, which is a cam sensor code, i never had this before, i cleared it out and hopefully that p0340 doesnt come back.

otherwise my car is gonna catch about 9 hot ones from my .45!!! lmao

 

well that sucks...perhaps primary o2 is bad or another leak...also did you do anything to the tune since you fixed that leak?