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 change in voltage …
Ongoing Sniper IAC/Idle Issue - Holley Performance Products Forums
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 approximately 20% …
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 then dies. If I …
Issue with fuel pressure, need help. - forums.holley.com
Dec 28, 2024 · I've got a strange issue with my fuel pressure. When I turn on the ignition the pressure is about 43 psi, but once the engine starts it's 60 psi. The fuel pump is in the tank, and the pressure …
Idle is LEAN suddenly. - Holley Performance Products Forums
May 25, 2023 · The other day it started idling at 15-16 AFR and running rough once hot. Closed Loop was adding all it could, 5% per the limit. Idle speed was still around target. I noticed IAC was a bit …
IAC Constantly Returns to 0%. - Holley Performance Products Forums
Oct 11, 2020 · If the gap is great, say your idling at 1% and your Hold Position is 30% and you slow tip-in on the throttle, when you reach 2% on the TPS, the IAC motor will jump to your Hold Position and …
Timing creeping up at idle - Holley Performance Products Forums
Feb 2, 2008 · I bought a brand new "plane jane" Inductive timing light today. I re-verified the input voltage to the MSD ignition box = 13.8v at idle I pulled the battery out of my truck to power the timing …
Sniper 2300 IAC Hunting - Holley Performance Products Forums
May 30, 2024 · My IAC seems to be hunting from 2%-12% roughly when idling at >= 180°F engine temperature. I've gone through the factory IAC setup two times and also verified the fuel pressure …
650 Brawler, high idle unless idle screw completely off.
May 18, 2021 · Bad news, still idling high. I’m going reset the idle mixture screws to 1-1/4 turns out and adjust all over again using a vacuum gauge. Also wondering if my timing is too advanced? 18° initial. …
Idle timing reading way too high - Holley Performance Products Forums
Feb 25, 2016 · I have a recently rebuilt 351C with aluminum heads, roller cam, lifters & rockers and 10 to 1 static compression. Have a 6A ignition controller and an MSD Pro billet 8477 distributor. I set the …