Idling to rule the gods exploits. but it wasn't easy.
Idling to rule the gods exploits. 1 KB, 3 views) Tags:None theandies Member Join Date:Feb 2024 Posts:39 Share Tweet Terminator X EFI Tuning & TechBeen trying to do my research and read up for issues, but can't seem to pinpoint the problem. Don't know what I'm missing here. If I hold the pedal I can keep it running, but it won't idle. My datalog and Config File are attached. If the ECU has a idle IAC Parked Position preset, why can it not manage to command the idle air valve closed while running and high idling? If your Target Idle RPM is 900 and it's idling at 900, out of gear with 0% IAC, what's the problem? When it goes into gear and the RPM drops, the IAC should open a little. I've done the IAC tune as directed on here and Holley videos and IAC still seems erratic. Any help would be appreciated. Ended up pulling on the end of spring and bending it on the support bracket enough to solve the problem. It's a bit rough, Jun 2, 2021 · You can plug the IAC hole with your finger and it goes back to idling correctly. The secondary spring was not strong enough and secondaries were sticking. My engine tries to starts, ramps idle for a half a second then dies. In fact, I believe the Holley HP/Dominator ECU is more sensitive to idle tuning (idle algorithm), than the Commander 950 is; meaning Jun 26, 2021 · My Plymouth was idling high and would not come down until I hit the throttle. My problem is Jul 5, 2023 · So I've had a couple threads regarding my IAC, which I've replaced already, and I'm still having some problems with idling. Thanks, Matt. 1) Misfire? 2) Vacuum leak? Wouldn't the idle be higher? 3) Exhaust leak? Runs fine above idle and still has same power, etc. I’ve recently installed a Sniper 2 on my Ford 427 and seem to be having an issue with idle control and the IAC. Trying to find its part of the manual: 23. 1 KB, 3 views) Tags:None theandies Member Join Date:Feb 2024 Posts:39 Share Tweet Jul 25, 2025 · Good Evening Everyone. I'm still troubleshooting that. . zip(118. I finally achieved, what I consider, an excellent idling enginebut it wasn't easy. I've attempted to follow steps read in the manual and from users threads on this forum. I noticed IAC was a bit elevated also. 3L with BTR Truck Norris cam, VS Racing 7875 turbo, 6L90 Transmission. Started with Holley's 58x LS turbo calibration. In fact, I believe the Holley HP/Dominator ECU is more sensitive to idle tuning (idle algorithm), than the Commander 950 is; meaning Terminator X EFI Tuning & TechBeen trying to do my research and read up for issues, but can't seem to pinpoint the problem. 0 Startup Jun 26, 2021 · My Plymouth was idling high and would not come down until I hit the throttle. May 25, 2023 · The other day it started idling at 15-16 AFR and running rough once hot. Idle speed was still around target. Will start off idling fine, drive nice, then all of a sudden won't want to come Jun 29, 2025 · I was able to capture a datalog of it idling in my driveway with this condition, prior to shutting off Closed Loop Compensation. Tried to add another coil on the spring with great difficulty. I recently spent several days reading (books) about EFI idle tuning and improving my engine's idle quality. Closed Loop was adding all it could, 5% per the limit. Jul 29, 2025 · Attached is a datalog file showing when the IAC Position is kicked to wide open. 0 Startup Jul 5, 2023 · So I've had a couple threads regarding my IAC, which I've replaced already, and I'm still having some problems with idling. This is directly after the vehicle being shutoff and was idling fine with the IAC Position at approximately 20% (A/C was on). I can get the car to idle at my target 850 RPM, smooth and without hanging after a rev. Attached Files GTO Idle IAC issue. I recently spent several days reading (books) about EFI idle tuning and improving my engine's idle quality. Apr 27, 2025 · New to Terminator X EFI and could use some advice to get a decent running tune to drive around with until I can get a full tune. Gen 4 5. Soon as I let the pedal go, it dies. Runs good for the most part, biggest issue is idle. z4epwonxig7lgg50kx5vphoxrxfppu6tonu54z