Holley sniper high idle at startup?

New data shows unused business assets - like empty offices or company vehicles that don't move - in March and April totaled $55 billion. If the IAC was fully closed it might run 20 or 50 RPM below target idle speed, so the chances that the IAC is causing the stall are pretty slim. Sometimes we had issues with the idle, especially when pulling up to a stop sign it would drop to 400-500 rpm and almost die, but then it would idle. Sniper idle is too low on cold startup. Use this calculator to calculate your startup costs so you know how much money you need to start a small business. Saturday 8AM - 2PM CST Quick Start Tuning 12/02/2009 Latest Articles. Today I wanted to get my idle issues fixed with my Holley Sniper EFI. This winter I've pulled exhaust all apart and checked/fixed any leaks apparent by soapy water and pressure. 02-07-2024, 11:17 AM I'm having a really hard time with my Sniper & HyperSpark setup. It then got up to around 2,700. Occasionally the engine would die when I would pull into a stop sign. After about 1-2 minutes, it opens the IAC and starts to immediately idle at about 2200-2500 RPM. It never does this when cold, and only sometimes does it when hot. Extreme Backfire. Yesterday, 02:12 PM. I've adjusted the idle air control to between the reccomend settings of 2% to 10% and done. There is a really rich fuel smell and after multiple starts, I can't get. I have the Sniper with HyperSpark Ready-To-Run distributor on a 408 stroker with a 5-speed. I selected stock cam in Wizard. Learn about sniper missions and special operations units There are plenty of occasions where you might find your car idling. I have been working with Holley on my issues, but I'm not sure if someone else has seen these issues. For fuel, I'd want 12 For idle I'd start at 13. It's about 2700 rpm for about three seconds and then comes down to proper idle 1150 rpm. You've got it running and warmed up but now you. Some of the basic steps involve checking float levels, and adjusting for proper fuel pressure. The idea that doing something trumps doing nothing is no new phenomenon When your car idles, the engine and alternator run slowly. Dec 19, 2023 · Possible fix for high idle. While coasting at around 10 MPH with engine temperature around 162°F, the idle speed does not go back to the setpoint of where it's set to idle. I do have an aggressive cam installed and idle set to 800 RPM, any lower an it will sometimes die when issue starts. I have the idle set to 950, if I adjust the idle screw to get 2-10% IAC it will not hold the idle & stalls with 100% IAC showing on the handheld. Holley tech support doesn't help. Check and adjust accordingly. My plan is to increase idle timing to 26-30° and speed to 850 RPM, which should help. To do this, open up the Initial Startup gauge screen that was used in section 17 Holley EFI; Sniper EFI; If this is your first visit, be sure to check out the FAQ by clicking the link above. If the WBO2 reading is noisy or incorrect (as yours is in some portions of the datalog) the Sniper will increase fuel flow. I think he said he did that for a winter tune. Nov 17, 2022 · Another symptom to watch out for is an excessively high idle speed. Adding wallpapers is a method of personalizing your Wi. Tuning a 2300 Holley Carburetor is a straightforward process thanks to Holley's simple design and exterior tuning capability, meaning the carburetor may be adjusted on the fly whil. Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. Just fired up my Sniper EFI and initially the idle was around 2,200. This is a new install. I selected stock cam in Wizard. The main issue I’m having is that during hot idle, the idle speed will sometimes surge in a regular pattern repeating every 5 to 10 seconds. Home Make Money Side Hustles If you’. 05-14-2024, 10:48 AM I recently installed the single barrel Sniper on a KEI truck, 660cc 4 cyl engine. Rumors are that the Sniper 2 resolves the RFI / EMI issues, not sure what else, but I'm not headed in that direction. I then goose the accelerator to perhaps get it to go. I'm hitting a bit of a snag trying to tune my cold starts/idle, hoping someone can help. Military snipers are highly trained sharpshooters that can hit a target from great distances. Tweet Hot Idle Surge. Nothing is hanging the throttle open also. It will do this for over a minute. Holley Sniper Surging and Stuttering (SOLVED) I haven't posted in a while, but I wanted to share some issues we had in case it helps someone else on the thread. Car runs & cruises great everywhere above idle. I have been working with Holley on my issues, but I'm not sure if someone else has seen these issues. Jan 20, 2020 · If you're installing a Sniper EFI system and almost ready to crank it over for the first time, this is the video for you! Nov 17, 2022 · When it comes to troubleshooting a Holley Sniper EFI system, there are four main symptom areas to watch for: fuel delivery, ignition, air/fuel mixture, and timing. I have the standard 4150 Sniper along with the HyperSpark distributor, ignition control box & coil. By then the temp was up to around 190°, and I new the thermostat had opened up, because the radiator had gone down. This fixed the high throttle position sensor reading (TPS) of above 1% that likely caused my idle issues Sep 8, 2018 · Hot idle is now acting as shown in the video. MAT (Manifold Air Temperature Sensor) – Should read ambient on a cold engine with the key on and the engine not running. MAT (Manifold Air Temperature Sensor) – Should read ambient on a cold engine with the key on and the engine not running. Jun 2, 2020 · Sniper EFI Idle Tuning. Once above 160°F, turn the idle speed screw so that the idle is about 50 RPM below your target idle speed set in Step 1, above. ) Startup IAC Position - Hold & Decay Time: 15 seconds (Less is typically better than more. Fuel pressure is looking good at high 50s and low 60s when getting on it Air/Fuel Ratio is about 12. Consider this your cheat sheet. In neutral idle needs to be at about 1700 RPM for correct reaction time, but I don't know if it is meant to be set at that high of an idle. Idle Tuning is a very important part of tuning any EFI system, especially our self-learning units like Sniper or Terminator X EFI. Searching through the threads in here led me to the EFI System Pro article "Solving Holley Sniper High Idle Issues" about the fluke -40°F setting on the Idle Speed Curve and thought for sure I'd found the issue! 7) Sniper EFI Idle Setting/Throttle Blade Setting (Holley Sniper EFI Quick Start Manual): Once the engine is up to operating temperature, the idle speed can be set to what was configured in the Wizard. Dec 19, 2023 · Possible fix for high idle. Direct plug in and even has a longer harness. Jul 28, 2017 · At high elevations it could read as low as 75kPa. This was at 16° of idle timing. To do this, open up the Initial Startup gauge screen that was used in section 17 With the vehicle in neutral, adjust the idle screw until the IAC Position reads between 2 & 10%. The IAC is sitting at zero. In your case, the IAC was 100% and the idle speed was only 600 RPM. First start went well (just started, not run up to operating temp yet) but I need to set initial timing & I'm wondering if anyone has some personal insight. I have an existing Sniper installation that will not start after sitting for a couple of weeks. Here's the problem, every now and then while driving when I come to a stop and put it back in park, my idle sticks at 850-1000, the IAC drops to 0, and my timing is sitting at 7° instead of the selected 15° at idle. I have reset the IAC Position three times and still fluctuates and stalls sometimes. I've adjusted the idle air control to between the reccomend settings of 2% to 10% and done a tps reset. Since I took it off and reinstalled it, the idle doesn't ramp up to 1200 and back down at startup like it used to either. To see how After Start Decay is working, when reviewing the datalog on the PC be sure to select the "Idle/Cold Start" view from the drop down in the graph view. To diagnose a problem, start by ruling out the simplest causes first. Idle & part throttle timing depends on your cam size. Any ideas on trouble shooting. e the complete fuel TOOLS REQUIRED F. Have yet to get a good running condition with my Sniper setup. The main issue I’m having is that during hot idle, the idle speed will sometimes surge in a regular pattern repeating every 5 to 10 seconds. cookie clicker unblokd I have a 550-516 Sniper, just the base unit with the fuel pressure regulator built-in. Consider this your cheat sheet. This is the Holley prescribed method for first start, but Holley doesn't prescribe what to set static timing at. Thus, if you truly plugged the IAC port, the engine should have died, unless getting air somewhere else (vacuum leak from PCV, brake booster, intake gasket). Everything runs great on my Sniper kit! The only thing that bothers me is when the car is dead cold, you fire it and it immediately goes to set idle speed. Car drives & idles great when cold, but once it starts to heat up ~50% of the time when I coast in neutral starting around ~1500 RPM, the RPM will just drop down to stalling out smooth & quick. I am going to write this specific to Holley's Sniper and Terminator X throttle body EFI systems but most of this is going to apply to some degree to all advanced EFI systems intended for. It never does this when cold, and only sometimes does it when hot. Extreme Backfire. Yesterday, 02:12 PM. That sounds like it may be a clogged injector. You might start by calling the local hot rod shops and trying to locate a Sniper guru in the area. It never does this when cold, and only sometimes does it when hot. Extreme Backfire. Yesterday, 02:12 PM. What Does a Sniper Really Do? - A sniper is a highly trained soldier who specializes in shooting targets with modified rifles from incredibly long distances. My AFR is staying around 13. I am going to write this specific to Holley's Sniper and Terminator X throttle body EFI systems but most of this is going to apply to some degree to all advanced EFI systems intended for. Sniper idle is too low on cold startup. What Does a Sniper Really Do? - A sniper is a highly trained soldier who specializes in shooting targets with modified rifles from incredibly long distances. I think it has to do with my timing. Dec 13, 2016 · Holley Idle Speed Adjustment Instructions: Once the engine is up to operating temperature, the idle speed can be set to what was configured in the Wizard. For an indicated Street/Strip cam you're only running 15° of timing at idle and most engines like 20° to 22° or so for a better idle. The idle speed was around 1000 RPM, but there was no way for the ECU to get there. Since I took it off and reinstalled it, the idle doesn't ramp up to 1200 and back down at startup like it used to either. Since I took it off and reinstalled it, the idle doesn't ramp up to 1200 and back down at startup like it used to either. Direct plug in and even has a longer harness. bakken young funeral home river falls I haven't posted much. Since I took it off and reinstalled it, the idle doesn't ramp up to 1200 and back down at startup like it used to either. Idle is fairly stable. Holley Sniper EFI suddenly severely overfueling Jump to Latest Follow 52K views 33 replies 13 participants last post by joesweeting Feb 27, 2018 rel3rd Discussion starter 5000 posts · Joined 2012 #1 · Dec 23, 2016 Was off today, so decided to take my car out for a spin. To diagnose a problem, start by ruling out the simplest causes first. Apr 5, 2024 · After I've driven the car and it's up to temperature, if I shut it off and wait 15 to 20 minutes, the idle surges badly upon startup. Car goes dead lean off idle to WOT, Holley Super Sniper 8 injector. Please be aware that this is a community forum. Good start, but I won't going further before being able to test the timing. It idles at around 1700 RPM. Jul 18, 2020 · I've adjusted the idle air control to between the reccomend settings of 2% to 10% and done a tps reset. Any ideas on trouble shooting. And always post your Config File with any datalogs you post. Prestart Checklist Before starting the engine, double check for leaks, proper wire routing, any wiring hazards or loose nuts and bolts. Doesn't die or anything, but no high idle. A story with a great ending! I finished my Factory Five Roadster about a year ago. This basic manual contains the information necessary for the in. Any ideas on trouble shooting. The red light issue is addressed with some of the idle setups, but we need to see what the settings currently are. You may need to convert to a 3G alternator with the appropriate wiring changes to ensure good clean EFI friendly voltage all the way down to idle. Aug 31, 2021 · Hello. The truck starts & runs fine when the weather is warmer 50+°F, but when outside temperatures get in the 30s°F it won't start. After I've driven the car and it's up to temperature, if I shut it off and wait 15 to 20 minutes, the idle surges badly upon startup. hotdogging Use the idle speed screw to set the idle at a comfortable warm-up speed. It then got up to around 2,700. When fuel pressure is high, the Sniper will restrict injector flow to try to lean the system. Started and ran great, drove it around a bit, no problems whatsoever. At high elevations it could read as low as 75kPa. 66Belchfire Junior Member Join Date: Apr 2024 Posts: 13 Share Tweet #4 04-20-2024, 10:07 AM Sniper EFI Idle Setting/Throttle Blade Setting (Holley Sniper EFI Quick Start Manual): Once the engine is up to operating temperature, the idle speed can be set to what was configured in the Wizard. EFI system starts beautifully when cold, works fine when I drive it. May 26, 2024 · When my idle can go as high 1000 RPM and IAC Position will be a 0%. While adjusting the idle speed screw, if the. The engine runs OK when hot. Having trouble with IAC Ramp Down. I should be able to get in the truck, turn the key, the engine should fire right up and I should Weird high idle speed problem. Everything runs great on my Sniper kit! The only thing that bothers me is when the car is dead cold, you fire it and it immediately goes to set idle speed. To start viewing messages, select the forum that you want to visit from the selection below Hi all. Some of the basic steps involve checking float levels, and adjusting for proper fuel pressure. I have an existing Sniper installation that will not start after sitting for a couple of weeks.