Random Stall Issue - Holley Performance Products Forums
Jun 26, 2025 · My car was idling and warming up and just died. The only odd thing I see in the datalog is a slight increase in voltage just before the car died. I wouldn't think that a 0.1V …
Ongoing Sniper IAC/Idle Issue - Holley Performance Products …
Jul 28, 2025 · Attached is a datalog file showing when the IAC Position is kicked to wide open. This is directly after the vehicle being shutoff and was idling fine with the IAC Position at …
Sniper 2 IAC/Idle Help - Holley Performance Products Forums
Jul 23, 2025 · Good Evening Everyone. I’ve recently installed a Sniper 2 on my Ford 427 and seem to be having an issue with idle control and the IAC. I've attempted to follow steps read in …
Terminator X Max: Troubleshoot Initial Startup/Idle
Terminator X EFI Tuning & TechBeen trying to do my research and read up for issues, but can't seem to pinpoint the problem. My engine tries to starts, ramps idle for a half a second …
EFI Idle Tuning Notes - Holley Performance Products Forums
Jul 24, 2012 · I recently spent several days reading (books) about EFI idle tuning and improving my engine's idle quality. I finally achieved, what I consider, an excellent idling engine...but it …
IAC goes to 0% at idle, what can I modify to help it stay in play?
Apr 6, 2020 · When it's done, it's idling at 900 RPM with that 0% reading. What are some things I could modify in the tune to allow the IAC to get involved? I have done a warm "butterfly" …
Latest idle issue/high idle after warmed up. - forums.holley.com
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. I've done the IAC tune as directed on here and Holley …
High Idle With Holley Sniper - Holley Performance Products Forums
Jun 25, 2021 · Sniper EFI Tuning & TechMy Plymouth was idling high and would not come down until I hit the throttle. The secondary spring was not strong enough and secondaries were …