idle control

I’ve been having this issue for 2 years. Hasn’t been drove because I can’t fix it. When I crank it up cold it’s fine, then when it drops to idle rmps it will dip to 200 rpm real fast and then back to 700 back and forth fast until it dies. When I rev it up, it will come back down to 1000 rpms and...

Few months ago I installed a mspnp2, along with GT40P heads and intake on my 95gt, idling has always been an issue but the startup creeps to around 3k and hangs there for 4-5 seconds before dropping down, this is only when the car has ran in the last couple hours, cold starts in the morning...

I have a 86 GT, 5spd. Engine is a 5.0(302) with gt40 heads and intake. e303 cam and shorty headers with catless xpipe. I am running microsquirt from efisource and an aem xseries wideband. Engine starts and runs great up to operating temp. I have an electric fan that's controlled by the ecu and...

I have a 89 mustang with SBF 302 with GT40P heads and Vortech V1 blower at 10psi and running the ms3 gold box with tuner studio. In the idle control section I'm trying to find out what the valve mode is supposed to be set at inverted or normal for a stock IAC valve. Idle valve type is set at PWM...