ECMlink Car wont start after changes

[Justin Miller]

I finished my DSMLink last night and was able to start the car. It was running very rich so I quit for the night. I made some changes to try to see other data to be displayed. I'm not sure what I did, but now the car wont start.

I think I changed pin locations, but can't remember.

Car info: 2g, 1200 cc injectors, LC2 wideband in front O2 location, stock O2 rear, speed density harness, 4 bar MAP, GM AIT.

 

[Vegas Smith]

post a log

 

[Justin Miller]

post a log

 

[Justin Miller]

Here is a log when it was running.

 

[Vegas Smith]

There is a shitload wrong with the settings

1) enable idle switch operation and simulate idle switch from tps. Also enable idle switch while moving
2) click "disable maf comp with speed density"
3) unclick both setting under maf clamp tab
4) Your wideband is not setup in link. Change your pin assignments so that the wideband is listed at the correspond pin you installed it at then click save pin assignments. You also need to do the same thing for IAT and MAP sensor.

 

[Justin Miller]

The LC2 is not listed as an option for a wideband in pic assignment page.

 

[Vegas Smith]

You just use "wideband".

 

[Justin Miller]

The LC2 is not listed as an option for a wideband in pic assignment page.

I have lc1 assigned to front 02 since there isnt a "wideband" option. IAT and map are plugged into a speed density quick harness, so I am not sure what to assign where.

 

[Vegas Smith]

I have lc1 assigned to front 02 since there isnt a "wideband" option. IAT and map are plugged into a speed density quick harness, so I am not sure what to assign where.

Then use LC1.

 

[Justin Miller]

I did all of this and still no start. Do you mind looking at my latest log?

 

[Vegas Smith]

You need to capture battery and your omnibar in the values. There must be something mechanically wrong with the car.

 

[v8s_are_slow]

Which one is the map sensor using???

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[v8s_are_slow]

Try switching that mdp setting to baro instead. If that doesn't work, post up a previous log where it was running please.

 

[Justin Miller]

It's been awhile. I hope you are still around v8s_are_slow. I have a datalog that I need some help on. Hope you can help.

 

[v8s_are_slow]

What's the issue you're having?

 

[Justin Miller]

Starts rough, then idles. Runs very rich. Will rev only if I ease into the throttle. Quick throttle bogs and stalls.

 

[v8s_are_slow]

You're not logging your sensors like wideband, map, iat, etc. Need that stuff setup first. Your trims show lean but I can't remember if you're simulating the stock O2 or not.

 

[Justin Miller]

Ok. I think I have the sensors logging now. Also turned on o2 simulator. This latest logshows a rough start, idle ok, then increses in rpm then dies. Will not restart.

 

[Stapl3]

NBO2 Sim tab. You need to check that box.

Zero out the fuel slider.

Your Loadscale is set for a 2.3L. Do you have a 2.3 stroker engine?

You're still not capturing values needed. Just capture everything honestly.

 

[v8s_are_slow]

Ok. I think I have the sensors logging now. Also turned on o2 simulator. This latest logshows a rough start, idle ok, then increses in rpm then dies. Will not restart.

I'm not at home to look at logs and probably won't be able to for a good minute cause I'll have company over and going camping over the weekend.

But I'll say that if it's not starting you might need more deadtime. The first log showed trims at 16 (from what memory recalls at my old age) which is lean. You might just not have enough fuel. If you have the stock O2 in, no need to simulate and honestly better not to if you don't have to.

 

[chrisman287]

Did you try resetting your fuel trims?

Also won’t start as in a no crank situation? Or won’t idle?

 

[Justin Miller]

NBO2 Sim tab. You need to check that box.

Zero out the fuel slider.

Your Loadscale is set for a 2.3L. Do you have a 2.3 stroker engine?

You're still not capturing values needed. Just capture everything honestly.

It's a fully built 2.3 long rod stroker. I will try these things tomorrow. Thank you!

 

[v8s_are_slow]

It's a fully built 2.3 long rod stroker. I will try these things tomorrow. Thank you!

If you have the stock O2 and it works, DON'T check that box. Let the stock sensor do its thing.

 

[Justin Miller]

Here is the latest log. Cranks, starts to fire, then dies. I added about everything to the logged data list.