i had a power FC for nearly 2 years now and i have gotten quite good at programming everything and knowing what everything does. However, i am having a problem getting the car to come down from an idle and i am asking for some suggestions. the car runs great full throttle and even partial but its jsut coming down from a roll that it will 90% of the time stall out. I can start it again instantly and it will idle smoothly at 1K. It will also stall if i have the car idling and then push in the clutch rapidly. Could this be that my rotation assembly is too light or it is a new engine could it be still tight (sort of the effect how a lawn mower shuts off ). I had the car on our dyno for over an hour just messing with this problem but i have no solution yet. A/F ratios are great and more ignition timing is not helping at all. Im clueless

 

well I've not tuned the power FC, but when a Hondata car has this problem, we bump the idle air control valve duty cycle and that fixes it. Dont know if you have that ability or not.

 

Hey Josh, what up man. I bought that spare block you had, remember?? Anyways, nice to see the car is running.
This sounds stupid, and no I dont know anything about the FC, but you mentioned the rotation assembly. I would take a look and see where your valvelash is set at. Stupid, but anything is possible.

 

valve lash is perfect. I dont have an IAC but i have gotten several cars to idle well without one. The revs jsut drop like a rock as soon as the clutch is pushed in. As far as the Power FC it can do anything that the Hondata can do but nothing seems to work well enough for it to be alright. I guess ill keep trying.

 

Sup Josh

Could it be due to your injectors? What size are you running? Larger injectors don't like to be run at a lower idle, b/c of the extremely low duty cycle. 91lsturbo and I talk everyonce in a while. He swaped from 450 to some 750cc's and said that he had to adjust his idle up to 950 RPM to get it right.

HTH

Steven

 

iv seen the same problem many times but never a solution... what i have seen most do is when they let off the throttle/clutch... they rev is up like once or twice as the revs are going down... not reallya solution i guess but it works