NefMoto

hey all,

first let me give you as much background as i can, no logs infront of me, on a tablet)

awp 1.8t hs box

motor fresh as of 12k miles ago, sensor wise except the coolant temp.
t3/t4 50 trim .63 ar
440cc green giants right now, normal 550 genesis.
3bar fpr
vr6 maf housing
Sai, rear 02 deleted( correctly) n249, n80 sai all deleted in esconf also
basic corrections

tvub corrected
ktre corrected
maf scaled

So with that, that would be where i started to get the thing to run. Starts up, runs like a champ....When cold
as it warms up, somewhere around 40*C it goes rich as possible.  like pinned at .75 rich... this is also around the time when i notice that the car seems to pick up reading off the front 02 sensor.  after that, no mater what temp the car is at or the condition im in, its always .75 lambda

this seems to only be when im at idle, or when im at low loads via pedal position.if im accelerating lightly, at it climbs to over 30% load, it goes to what my requested lambda is, but once i keep the pedal at the lightly pressed, and im just cruising, it falls back to .75

on wot pulls, and basically everywhere else in general acc. it runs perfect. everytime( know i shouldnt) do pulls wiht boost, its great.
no cf's anywhere either.

not sure where i need to go with this as far as what maps to correct, but i don't want to drive it more than i have like this.. i mean, im running throught 5 gallons of 93, in a matter of 60  miles....

ive spend the last week or so defining my hs xdf, and have most eerything defined that i would need.

i have me7 logger installed, and have played with it, but have no idea how to put them into ecu xplot.... sorry, im trying

LTFTs?

-1.6 % 02 correction at low load is -26%, so its about pegged

Try one thing at a time.  Stock MAF housing/sensor and then just injectors.  Then change the MAF.  Hell, put stock injectors and a stock MAF for that file in and run that. 

krkte factor / value?

Changed MLHFM to reflect the VR6 3" maf correctly?

Log the whole lamfa_w path to find out where the "richness" originates.
If you need some specific RAM vars - post your bin and whatever vars you want. No need for the tuned file, just the stock one is fine.

k will do

krkte 0.07436   

k

the problem isn't requested lambda.

Is this in your mk3 with the 1.8t swap? if so, just from a logical standpoint. I'm imagining that your mk3 had a different fuel pump and your 1.8t ecu doesn't know that. try switching to the oem fuel pump for your 1.8t that the ECU was programmed to work with?

Honestly its just a mere idea. don't take it as anything more than that. I just know if I was going to do a swap, personally I would first make sure that I was bringing over absolutely every single component that the swapped engine relied on from the donor car when I do the swap. every sensor, every pump, every piece the ecu communicates with... everything... just to avoid discrepancies such as this. then go from there.

i emailed you. if your in my area I can help you get your logs open in ecuxplot in person. up50lut3@gmail.com was what I emailed.

ECU doesn't comm with the pump.  The rail just holds a pressure dictated by a hardware FPR.  It isn't MED. :)

it is... its mk4 everything.. harness and electronics, and yes a mk4 fuel pump

lamfa_w... requested is 1... im currently without wheels, at the moment. so im justr doing this at idle. its 1 with actual .75


scaled maf back to oem 1.8t, and put the 1.8 sensor back in housing.

going back to stock injectors isnt possible right now, but that would kind of defeat the pourpose anyway, because i still need to get the car to run correctly with them.

fps is 3.... so in regards to hardware, it seems as tho your saying the only way to get this to not run rich is through hardware? thats no bueno if s0

requested lambda is 1..  its not a matter of requested, its a matter of it never being able to meet this request.... like i said, when i blip the throttle, it jumps right up to where it should be.... if i hold the throttle, at lets say 3 grand it jumps up, then once( load maybe?) it evens out, it goes to .75 and stays there

What does it go to if you lift it off idle?

Goes to requested if I tap the throttle, it goes requested(1) if I tap and hold, it goes requested then back to .75

Torque intervention? Via pedal position?  Maybe egt, tho I no nothing on how it's calculated because I know there's no actual sensor.....protection? As this happens once 02 sensor is switched on.

Just traced all 02 wires, checked for shorts, checked resistance and milliamperes, all good on 2 sensors, also tried a second car with the sensors so it's not that.

It's as if it's in protection? Isn't .75 lambda a default to add fuel to cool down the engine I feel I've read that somewhere.... an insights on what maps to check for protection?
   
This is cruising and resting idle

There's too many variables to try and diagnose IMO.  Different MAF, injectors, chassis.  Swap good?  No codes?  Original flash?  What happened to immo?  ECU belong to loom?

ive ad this 1.8t swap for about 4 years now. its a complete swap. everything electrical is from a mk4, every sensor, ever plug, ever part of a mk4 motor.... fuel pump, ac, power steering, ambient air temp sensors, dash, cluster.... fuse box...
you get my point, its a mk4 lol

ive had zero issues with this car. been stock, stage 1, 2+ with supporting mods( fmic, tip, exhaust etc..)
 none of the harness was cut... infact the only thing mk3 about this car is the taillight and headlight plugs, and the vaccumm pump for the door locks.

...so lets assume that there isnt an issue with the swap.

as i said, i put the 1.8t maf back into its orig. housing.... the only thig diffrent( tha actually mattters here) ia the turbo, downpipe, manifold and injectors..

im not trying to be rude,

but can we assume that i actually have enough sense that i did the swap correctly, and try looking at things that my aid me, instead f telling me chassis issues might be to blame ::)

rant over, sorry....ni keep getting pms telling me i didnt do the swap right.... ignorance i guess...

anyway, yes its an 04 gli awp, SM ecu, cluster and loom from the same car. i bought the wrecked gli and swapped it myself.

as i suggested, a few posts ujp, could it be egt protection or torque intervention.?

saw this from a mastro handbook:

3. Why is my desired lambda .75 but my lambda map is targeting a different value?
.75 lambda is the richest mixture the o2 sensor can request and is often a sign of ECU "ATR" intervention. This occurs if the ECU detects very high calculated EGT's that exceed a predetermined value. The ECU will target a lambda of .75 in hopes of cooling rising combustion temperatures.

site referenced from: http://www.cepavw.org/phpbb3/viewtopic.php?t=22354


is there a variable(s) i can log with VME7Logger that would state what and if the car is in a failsafe mode?

what about B_tabgbts? it says Condition EGT for part protection.

or if anyone has any ideas as to what i can log that may lead me to understand why or where its getting the ok to force rich cond. when requested is 1.0...... at idle and when the requested load(?) seems to drop... like if i give it gas while cruising at 30 then hold the pedal so it acc. then cruises at 50, once the load comes down from the acc from 30-50- cruising at 50, its back to .75 rich.

thanks in advacned for an thoughts

At any point are you planning to post an actual log?

Sounds like the swap is fine.

Upload the bin then; something is wrong.

Temin? Dont know how big your injectors are..oops didnt read carefully.
I have had counterfeit green giants that leaked terribly, you can check by removing the rail from the manifold and priming the pump. They should not develop drops of fuel (I think.one drop per 2 minutes is acceptable by OEM).

Is your desired lambda .75?

Sorry, I skipped over those walls of text.
Anyways, since there's no log yet, to double-check: is lamfa_w actually 1.0 or does it dip to 0.75?
If it stays at 1.0, then there are 2 main possibilities - hardware and software. (yay, Captain Obvious!)

Hardware-wise - you can check fuel pressure and air leaks downstream of MAF.
Software - well, just too many variables.

The reason I made an emphasis on FP - if the FPR line is torn - it will be rich at idle (vacuum) and more or less normal with a bit of gas, which sorta matches your symptoms.

if you have a boost gauge maybe something came loose at the T adapter located near the FPR? that could cause a leak?

Upload the file or logs.  Prove to us that requested is indeed 1.0.

Tell us what injectors, what FPR, what MAF is CURRENTLY on the car.  Does the file on the ECU match the actual original ECU?  No cross-flashing? 

i bet on a wrong krkte factor

Have the same problem... Did you guys solved it?

In my case it happened when i changed the injectors - from stock 320's to 630 dekas. Currently running on 4bar fpr, krkte 0,04693. Temin 0.3. Idle is smooth, no misfires. Only when car warms up requested lambda is 1.000, actual is slowly decrasing till it reaches 0.727, and stays there. Before car is up to temp stft are 0%, after it reaches operational temp they stays at -25%, no matter what. Maf stock 70mm with stock mlhfm, kfkhm only set to 1 because of open air intake. When i unplug the maf, stft's are operating in +/-7 %, and lambda holds its desired value. Tried changing tvub, but result is rough idle and misfires.

Try fkkvs

Pressure test the car, you have a leak.