ECMlink 1g running rich at idle log

[Shawn Donahue]

i just got a new 2 me 1g project. it had just been converted to sd using a gm 3bar and gm iat. when started from cold it idles around 10 for afr then after you go to drive it, it will drive ok then when you go to stop it will die out. I attached a log that shows me trying to get it to idle after it dies, anyone have any ideas? I believe it might not be letting me in closed loop? i am going to get a new startup log after it cools down. i am new to tuning and i am trying to learn. the car will be brought to a proper tuner i would just like to give it a base map to be able to drive it some to see what else it needs.

 

[Shawn Donahue]

here is a better idle long and one with me moving the car and having it die.

 

[Vegas Smith]

You dont have you wideband setup under pin assignments and its very hard to believe your narrowband switchpoint is 0.8v.

 

[Shawn Donahue]

You dont have you wideband setup under pin assignments and its very hard to believe your narrowband switchpoint is 0.8v.

I will check the wideband tomorrow under pin assignments, what can i do about the switchpoint?

 

[Vegas Smith]

I will check the wideband tomorrow under pin assignments, what can i do about the switchpoint?

You can look up the correct one and put it in.

 

[AWD-Tony]

ISC is way off and you need to increase airflowperrev. Adjust biss with car fully warmed up to get isc position to 30ish with no load. Increase the idle area in VE to get airflowperrev to .25. Good idea to log WBFactor as well.

 

[Shawn Donahue]

You can look up the correct one and put it in.

under pin assignments for my wideband i have front O2, it does not have an option for rear O2 unless i am missing something

 

[Shawn Donahue]

ISC is way off and you need to increase airflowperrev. Adjust biss with car fully warmed up to get isc position to 30ish with no load. Increase the idle area in VE to get airflowperrev to .25. Good idea to log WBFactor as well.

car will not go into closed loop so i do not want to adjust anything until i can figure that out.

 

[Shawn Donahue]

here are 2 more logs with my wideband under a pin assignment,.

 

[Shawn Donahue]

ISC is way off and you need to increase airflowperrev. Adjust biss with car fully warmed up to get isc position to 30ish with no load. Increase the idle area in VE to get airflowperrev to .25. Good idea to log WBFactor as well.

here is a log when the car is fully warmed up with WBFactor,

 

[AWD-Tony]

There's no rear O2 on 1g's. You'll want to log ltft as well. It's pig rich so I assume that's why it won't go into closed loop. What size injectors? Have you tried pulling global or deadtime?

 

[Shawn Donahue]

There's no rear O2 on 1g's. You'll want to log ltft as well. It's pig rich so I assume that's why it won't go into closed loop. What size injectors? Have you tried pulling global or deadtime?

Evo 8 injectors, i have not tried messing with the maps, i wanted for it to go into closed loop before i messed with the maps. My car has the standard front o2 and a wb second but i looked today and it might be wired in the wrong ecu pin.

 

[AWD-Tony]

It’s logging wbfactor so I assume it’s wired and logging correctly. What makes you think it’s not wired correctly? You can adjust fueling once the car is warmed up, think 186* iirc. It’s not going into closed loop because your o2 is not moving from it being too rich.

Looks like evo 8 injectors should be -18 global and 0 deadtime. Start there.

baseinjectordata [ECMTuning - wiki]

www.ecmtuning.com

 

[Vegas Smith]

1) Your wideband is now setup correctly in link but I suspect it's connected to the wrong ecu pin as the signal doesn't move much. If it's connected to front o2 then that is pin4 on a 1g ecu.

2) Do another tps adjust to get tps at 0.63v and 0% throttle at idle.

3) Adjust the biss screw so that iscposition is roughly 30 at idle with no a/c or fans on. https://www.sixsigmatuning.com/dsm-idle-control

Car is close just needs a few things. If you're confident the wideband is wired correctly then take the deadtime to zero and see if that helps. Lowering deadtime leans out the idle and vice versa. Wideband factor is only useful in WOT tuning.

 

[Shawn Donahue]

1) Your wideband is now setup correctly in link but I suspect it's connected to the wrong ecu pin as the signal doesn't move much. If it's connected to front o2 then that is pin4 on a 1g ecu.

2) Do another tps adjust to get tps at 0.63v and 0% throttle at idle.

3) Adjust the biss screw so that iscposition is roughly 30 at idle with no a/c or fans on. https://www.sixsigmatuning.com/dsm-idle-control

Car is close just needs a few things. If you're confident the wideband is wired correctly then take the deadtime to zero and see if that helps. Lowering deadtime leans out the idle and vice versa. Wideband factor is only useful in WOT tuning.

im pretty sure it is wired to the wrong pin, im going to check it out now.

 

[Shawn Donahue]

i was able to check a few things out before a storm came in, I was able to adjust the biss screw to around 30 and i swapped which pin the wideband went to on the ecu. I was able to drive the car some and it would idle after! Tomorrow i am going to spend a lot more time on and and do everything else that has been recommended. i believe my wideband was never calibrated or something because the estimated afr in dsmlink is around 14 while my gauge is at 10. I am posting my driving log, any critique is much appreciated.

 

[Vegas Smith]

Your wideband signal is completely f***ed. There's still something wrong like it's wired incorrectly. Do a tps adjust again. Do not turn the car on until your wideband is wired correctly and calibrated.

 

[Shawn Donahue]

Your wideband signal is completely f***ed. There's still something wrong like it's wired incorrectly. Do a tps adjust again. Do not turn the car on until your wideband is wired correctly and calibrated.

will do, ill do a tps adjust and calibrate the wideband in the morning.

 

[Shawn Donahue]

update: i took the wideband out today to calibrate it, after i calibrated it it was reading 7.2-7.4 in open air so i am getting a new wideband sensor and front o2

 

[Vegas Smith]

update: i took the wideband out today to calibrate it, after i calibrated it it was reading 7.2-7.4 in open air so i am getting a new wideband sensor and front o2

You’re running narrowband simulation which means you don’t need a front o2. For now you can run the stock if you just want get it running.

 

[Shawn Donahue]

You’re running narrowband simulation which means you don’t need a front o2. For now you can run the stock if you just want get it running.

sounds good, i believe i figured out the wideband situation, the previous owner had the brown wire from the LC1 going to the wrong pin on the ecu which i moved to the correct pin, and they had the yellow one going to the gauge which made it read different. i have the brown one going to the ecu pin now and the gauge. is that how it is supposed to be or should the yellow one be going to the ecu? here is an idle log with the brown going to the ecu and gauge. After this log i turned my injector deadtime to 0 and it is idling when warm around mid 11's