GregoryRx7

hey whats up guys i just got my FD about 3 days ago and i finally got her registered and i noticed my idle is high , not choppy but just high does anyone have any suggestions , maybe experience with that ? anything would be helpful.... thanks

evo_koa

iTrader: (2)

Did the car sit for a long time?

GregoryRx7

yea it did , thanks for taking the time to try to help also , very much appreciated

evo_koa

iTrader: (2)

I would check for a vacuum leak.

Sgtblue

iTrader: (16)

Maybe a vac leak, but in my experience those usually cause a loping or hunting idle. Not a steady one as described.
OP...idle can be affected by a lot of things, even seemingly unrelated mods like a lightened flywheel. And adjusting the idle isn't necessarily as straight forward as turning a screw. You might download a copy of the FSM and go thru the trouble shooting. And check the FAQ sticky at the top of this page under "I" for idle. There are some links that might help.

GregoryRx7

thanks the guy who had it before told me he adjusted the idle to be high and it is two screws i believe he said , i apprciate the help guys, i need a controller for my apexi ecu i dont have the fc controller and jjust wondering could i tune the car myself if i had an fc controller

Sgtblue

iTrader: (16)

Not a tuner but the commander (what you're referring to) allows you to make some adjustments but is probably used most for monitoring. You have read-outs for things like coolant temps, intake air temps, injector duty, knock etc. You can also perform a sensor check. For tuning you need a datalogit with a laptop.

GregoryRx7

thanks for the help brother

GregoryRx7

I got the idle fixed but when I got out spanking automatic mustang she drips coolant , also she get hot after about two hours of racing around so I ordered a performance radiator and getting it installed , I'm curious what she is putting to the ground it honestly feels like about 260

dark_takumi

What happens if you let it idle for a while? Does it eventually drop? Mine goes to 3k rpm on a real cold start but I was told that was normal. I dont remember the exact reason but I believe the ECU purposely does it for the rotary and getting the gas to burn and not flood the engine

Sgtblue

iTrader: (16)

^That's the 'Accelerated Warm-up System" or "AWS". And it is normal on a stock car. Another emissions related thing designed to get the engine (as well as the pre-cat and cat) up to temperature as quickly as possible. And you're right to mention this in the thread. I forgot about it. I removed AWS years ago and assumed the OP was talking about a high warm idle.
BTW, you can lower your AWS high idle simply by blipping the throttle or IIRC, putting it in gear.

GregoryRx7

Thanks for the info guys she drives great ,no complaints just maintenance for now