Been VE tuning, the car runs good and trims are good when the EVAP purge connector is unplugged. I plugged the EVAP back in after getting most trims to +/-3...but now the trim are +6 to -6/???
I couldn't get the idle to normalize either. I cut the over/underspeed spark and even tried OL idle in the 400 and 800rpm column...no change.
Here's the logs/tune
...
I cannot help with the idle but this is what I see, the TPS is very erratic @ idle. When you cruise it is fine.
The idle TPS is erratic as hell even when the over/under speed timing is disabled.
So I'm sure if you can figure out why that is you will idle correctly.
If I were to guess @ the problem .......a dirty or defective TPS seonsor.
TPS is newOriginally Posted by ctd
Latest log...I set PE 400,800 to 0% throttle, then to 1.00 (14.68) in those PE EQ ranges. I thought that fixed it. It idle great the first two or three stops, then back to the crazy ekg.
Last edited by fast400; 05-28-2012 at 11:03 AM.
I wonder if there is some way to fix position the blade to see if it will idle correctly or there is a mechanical issue......just thinking out loud.
I've checked for air leaks and checked the TB...nothing found. Does 2.8g/sec at 600rpm sound normal for desired g/sec for a stock 5.3 silverado transplant? Seems real low to me.
I upped the RAF and VE for the idle area. Here's how it looks now..
Why is my desired airflow at idle only 2.3g/sec?
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