Idling stop unavailable xl6. If I hold the pedal I can keep it running, but it won't idle. Will start off idling fine, drive nice, then all of a sudden won't want to come Terminator X EFI Tuning & TechBeen trying to do my research and read up for issues, but can't seem to pinpoint the problem. From day one, I've been plagued with a situation where the car almost stalls when you come off the throttle (like pulling up to a stop sign). Soon as I let the pedal go, it dies. 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. 1V change in voltage would upset the ECU, but I could be wrong. Jul 25, 2025 · Good Evening Everyone. 5 inHg at idle and 18 inHg is quite significant, so why are these two reading so differently? Shouldn't they be roughly the same since they're both reading intake manifold pressure (or lack thereof)? I recently spent several days reading (books) about EFI idle tuning and improving my engine's idle quality. I’ve recently installed a Sniper 2 on my Ford 427 and seem to be having an issue with idle control and the IAC. Don't know what I'm missing here. I've done the IAC tune as directed on here and Holley videos and IAC still seems erratic. Jun 28, 2025 · My car was idling and warming up and just died. I wouldn't think that a 0. I finally achieved, what I consider, an excellent idling enginebut it wasn't easy. I'm running a brand new Ford Racing 302 crate engine with a Holley Sniper. The difference between 14. Trying to find its part of the manual: 23. Tried to add another coil on the spring with great difficulty. May 24, 2024 · A story with a great ending! I finished my Factory Five Roadster about a year ago. zip(118. My engine tries to starts, ramps idle for a half a second then dies. My datalog and Config File are attached. Attached Files GTO Idle IAC issue. 1 KB, 3 views) Tags:None theandies Member Join Date:Feb 2024 Posts:39 Share Tweet The readout on my Holley Sniper says I'm idling at 40 kPa. If this is the issue, what are the recommended remedies? GPatrick Senior Member Join Date:Dec 2018 Posts:5073 . I've attempted to follow steps read in the manual and from users threads on this forum. 0 Startup 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. 5 inHg would be around 52 kPa. I'm still troubleshooting that. 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. Also it has always had this Jul 29, 2025 · Attached is a datalog file showing when the IAC Position is kicked to wide open. 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. If this is the issue, what are the recommended remedies? GPatrick Senior Member Join Date:Dec 2018 Posts:5073 Jul 25, 2025 · Good Evening Everyone. The only odd thing I see in the datalog is a slight increase in voltage just before the car died. 40 kPa would be around 18 inHg. The secondary spring was not strong enough and secondaries were sticking. 14. I can get the car to idle at my target 850 RPM, smooth and without hanging after a rev. This is directly after the vehicle being shutoff and was idling fine with the IAC Position at approximately 20% (A/C was on). hfdzvcx qfhvi tthsdbd bzq dcfbxl zboid ofkhsds nnam ehon ztipn