Scans good, still have idle problems.
10-23-2010, 09:15 PM
#1
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Scans good, still have idle problems. I did a lot of work on my idle and it still dies occasionally.
It seems that once in a while, it will hunt the idle and when i turn my steering wheel hard, it seems that powersteering throws it off and will make it die occasionally.
404 ls2. 240/250 113+4 cam, 102 cable drive tb, fast 102 intake, l92 heads.
I did some playing with the set screw and reset the tps.
-950 rpms
-I have 40-50 iac steps while hot.
-30* advance and it sits fairly stable.
-60kpa at idle (The most i could get by playing with settings).
-I played with airflow vs steps and moved it right about 8 cells, my desired and dynamic airflow seem to match up well
-STFTs are small (SD w/ STFTs enabled.)
Car drives amazingly and gets off idle well, what else can I try, tired of messing with this thing, it seems everything is good.
It seems that once in a while, it will hunt the idle and when i turn my steering wheel hard, it seems that powersteering throws it off and will make it die occasionally.
404 ls2. 240/250 113+4 cam, 102 cable drive tb, fast 102 intake, l92 heads.
I did some playing with the set screw and reset the tps.
-950 rpms
-I have 40-50 iac steps while hot.
-30* advance and it sits fairly stable.
-60kpa at idle (The most i could get by playing with settings).
-I played with airflow vs steps and moved it right about 8 cells, my desired and dynamic airflow seem to match up well
-STFTs are small (SD w/ STFTs enabled.)
Car drives amazingly and gets off idle well, what else can I try, tired of messing with this thing, it seems everything is good.
10-24-2010, 04:32 PM
#3
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I feel like I am on a goose chase with this. When in closed loop, my wideband gauge (plx) seems to fluctuate 14.7 to 15.4 and it generally drove really well, so i assume the narrowbands were working. Both of them give good fluctuating signals that are in line with each other.
I am lost. I got my tb voltage at .77 so i backed it off and reset it so its at .55 again. I get 160 counts hot, i will drill a hole when i have more time as i dont use a/c right now.
I did a cold idle scan to adjust the raf and that didnt help too much. I then threw it in open loop, w/ stfts disabled, and did some corrections based on my wideband.
What steps do you recommend I take to fix this, im tired of heeltoein like crazy and everyone thinking im revving at them when im just trying to keep my car from dieing.
I am lost. I got my tb voltage at .77 so i backed it off and reset it so its at .55 again. I get 160 counts hot, i will drill a hole when i have more time as i dont use a/c right now.
I did a cold idle scan to adjust the raf and that didnt help too much. I then threw it in open loop, w/ stfts disabled, and did some corrections based on my wideband.
What steps do you recommend I take to fix this, im tired of heeltoein like crazy and everyone thinking im revving at them when im just trying to keep my car from dieing.
10-24-2010, 07:57 PM
#7
I agree that you need a bigger hole but A few things to make sure of. Do your idle timing tables match your main timing tables? They should. That way the transition is smoother. Also, try running an extra 10* in the RPM column below the one that you idle at. You can add fuel in the column below your idle RPM also. Creates a little stall saver cushion.