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Cant get car to idle Dsmlink

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4gst

10+ Year Contributor
121
0
Apr 19, 2010
Los Angeles, California
Hey guys I have been having alot of trouble getting my car to idle right. I had installed some 950cc fic injectors but the car idled like complete crap so I took them off today, and went back to the stock injectors for now. The car still does not run correctly in closed loop. I have been driving it in open loop.

So when I put it in closed loop it has a lumpy idle and when i start accelarating it bogs and feels like it goes nowhere, until I give it enough throttle to get it in open loop. The car has a aem wideband and its in the front 02 sensor position. So now that I have the stock injectors in I went ahead and zerod everything out, to see if you guys could point me in the right direction to get it to run right in closed loop.

I attached a log with everything zero'd out if you guys could give me some suggestions that'll be great. Or if you see something that needs to be changed or adjusted let me know. I just want to get this car to run and idle right its my DD.
Thanks.
 

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1. You need to pick either the sliders or the DA (direct access) tables. They both do the same thing. Use one or the other, or you could be chasing your tail for a long time trying to fix an issue. Once you decide which to use, reset the other to stock values. Keep in mind this is for both fuel and timing.

2. I'd say reinstall the 950's and set global to -53% and deadtime to 330 (might need to raise it to 400 or so).

3. Not sure if you found a switching point of 2.55 better than 2.53, but the wiki says 2.53 for the AEM R1. (Probably won't make a difference, but figured I'd point it out.)

4. Test your ISC with a multimeter.
DmTaLoN's Idle Speed Control Test/Fix Page!

5. Reset your fuel trims (ECU > Reset fuel trims...)

6. Adjust your TPS again. At 0% it's showing a voltage of .55v.
v3tpsadj [ECMTuning - wiki]

7. An idle log (with the car up to temp) will help us/you out more than that log will, so go grab one of those.
 
Ok thanks for all the replies. I will test the isc once the car cools down. I got the car to run decent on closed loop today but the fuel trims werent in line. When i would try to change the maf comp to get them in line the car would go back to running like crap again. The changes in the direct access table where done when i had the car tuned. Should i change them back to stock.I thought it would only affect open loop. I will also put the 950's back in maybe later today. Or if i could get it running with the stock then ill leave them in till i get the car tuned again.

I have seen the ecmlink wiki i understood alot but its really confusing searching thru it. But i do use it.

Here is an idle log with the adjustments i made to get it to run right. any suggestions on what i should do from here. Ill post back later when i check the things that were mentioned.
Thanks again for all the replies.
 

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I just say that because there was a possibly that it was discussed problem and there maybe was an answer for it already, but good luck in finding the problem.
 
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