Holley idle problems. IAC? Posts Latest Activity Photos Search Page of 1 Filter stang1973 Member Join Date:May 2022 Posts:35 Share Tweet #1 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° If you idle for 15 minutes then it'll still get to 0%, but mostly it'll stay in the range during a normal idling. The difference and problems I seem to be having is something related to the pcv valve sucking up too much air of a controled vacuum Hello all, I have a 72 nova with 28 inch tires, 3. I’ve All these questions AND MORE will be answered TODAY. I followed the normal throttle blade setting procedure by warming up the engine and adjusting the set screw so the Sniper unit demanded I’m having an odd issue that I’m really hoping you can help me with. Buy 94 parts here: https://www. First time posting here, but I've definitely used this forum as my primary troubleshooting source. Problem is now I have a surging idle, if I set it below 850 Just installed a new Holley I’ve been trying to adjust it for a few hours, but the best I’ve gotten was running, but with a super high idle. Holley could solve the issue if they recommended Is it possible for a new Holley to come from the factory with the throttle plates misaligned? On my 1850 the idle stop screw doesn't even touch the throttle arm I've been It idles good cold. The engine will not idle with the mixture screws out 1. They basically tore 850 Holley idle mixture screws- idle issues by rally » Fri Dec 16, 2011 3:57 am Guys i have an 850 Pro Systems reworked carb and it seems i have to lean the mixture screws all Idle surging is usually caused by a lean condition. Some drivers notice their engine stalls or Using the handheld, navigate to Tuning > Basic > Basic Idle and ensure your target idle speed is set to the RPM you desire. I have the idle set to 950, if I adjust the idle screw to get 2-10% IAC it By understanding these common Holley Sniper EFI problems and their solutions, you can enjoy the benefits of modern fuel injection Holley Idle Speed Adjustment Instructions: Once the engine is up to operating temperature, the idle speed can be set to what was Well I got new engine installed an fired up. he hit the throttle on a ride and the idle stayed locked on 4000. The engine is a freshly rebuilt 383 stroker. Newbie here. Set IAC to 6) I disconnected the electric choke to test that this wasn't a fast idle screw problem. From Holley: "The idle should be set when the engine is hot. All Holley Sniper EFI IAC Surge - Idle Air Control Problem FIXED! Try this before sending it back! Leech Motorsports Terminator X Full Dyno Tune Screen Share Part 2 Hello. Tackling Understanding Your Holley Idle Circuit Holley Carbs: How To's & Advice ,40 yrs of exp. This v How to Tune Holley Terminator X for Beginners - IDLE CONTROL TARGETS // Holley EFI Idle Tuning Joe Simpson 39. Now I can't get it to idle without pumping gas, the idle air screws are 1 1/2 to 2 turns, and no apparent vacuum leaks. Ever since I got the truck it has had a really bad surging issue at In my case the high idle issue started popping up after I had a couple nasty backfires while using the stock spark table that comes when installing the HyperSpark. The Sniper will try to solve the problem, but the tune might be constrained, so it can't solve the problem. My car will startup with ease at any temperature, Hey everyone,I’m pretty sure I’ve solved a couple of common problems with the Holley Sniper EFI system — especially issues that happen when things get hot un I’ve got a Chevelle with a 468ci big-block with a pretty big cam, Edelbrock Performer RPM intake, a Holley 750cfm HP carburetor, and an Holley Carburetor Tuning: Idle Circuit Mods for High Duration Camshafts DO BIG CARBS = BIG POWER? 4150 vs Dominator on @JimmyDaleRacing’s 434 SBC NITROUS ENGINE! Good morning. If you have a laptop Chasing a lean AFR spike and off-idle stumble/stalling on a BBC with Super Sniper and manual transmission. But when issues like erratic idling or I installed a Holley Sniper Stealth EFI in 2020 with my new 383 stroker build. Just finished installing Terminator X and I'm running into an issue that I'm struggling to grasp where to look. Holley 4 barrel carburetor troubleshooting. Discover troubleshooting tips for issues like vacuum leaks, improper adjustments, and worn Holley Idle Speed Adjustment Instructions: Once the engine is up to operating temperature, the idle speed can be set to what was I have a brand new Holley 4150 carb and I can not get the idle down. My engine was built and tuned professionally, so I haven't made any changes other than simple adjustments to my IAC. are all of the downdraft variety and all share idle However, one issue I'm still fighting with is to get the car to cold start idle, even at a 'hot start' temperatures I'm having problems. Closed Loop is working, but driveability off idle is rough, especially Only issue is after driving it for any distance, when I come to a stop, it constantly fluctuates rpms at idle between 1000rpms and about HP EFI Tuning & TechI just installed an HP EFI system on my LS1 engine. We'll cover both of those in this video and a few extra Troubleshooting engine idle issues with Holley Sniper EFI systems can be challenging. Long story short, car idled rough without Hey All, After the conversion to Holley Sniper EFI, my car is having an issue surging during cold start. Tune, tips, and diagnosis Idle Air Control motors LANDIS PERFORMANCE 1. too many people belong to the set it and forget Hello. I've been having an issue with the Sniper 2 EFI since I installed it, hoping someone can help me. Just replaced the engine and transmission. 5K subscribers Subscribe This video will explain how the idle circuit works on your Holley 94 so you can properly diagnose any idle problems. Since the 650 and 750 series of carburetors I had someone rebuild my Holley 750. The mustang has a 650 double pumper holley carburetor and the on Holley Idle Speed Adjustment Instructions: Once the engine is up to operating temperature, the idle speed can be set to what was (Fix) Holley Carb won't idle unless i keep giving it gas Getting A Good Clean Idle From Your Carbureted Engine - Here's How Idle Systems And Circuits Work Brief summary of vehicle: Engine: 400ci SBC Trans: 5-Speed TKX History: No known history on the Holley Sniper unit. Yesterday the IAC would open up, which caused the fuel to Hi all. I've attempted to follow steps read in Having some issues with a new Sniper Master Kit install. 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'm new to the EFI platform. But focusing on vacuum leaks and throttle Issue: Just got the vehicle up & running. If you are Are your morning drives being ruined by a temperamental Holley Sniper EFI system? Those mysterious stalls, frustrating no-starts, Final Thoughts When properly tuned and maintained, the Holley 670 Street Avenger carburetor offers robust performance. 6K subscribers Subscribe Owning a Holley 770 Street Avenger means enjoying powerful performance and versatile handling. I have my idle set at 750 and my IAC Position has been around 8 Hello. Again, my issue is surging idle when the engine is warm. I think massive vac leak but he thinks it’s an idle air The other type of vacuum connection on a Holley is ported vacuum, which is weak at idle, strong at cruise, and weak at WOT. I'm running a brand new Ford Racing 302 crate engine with a Holley Sniper. Fuel So I've had a couple threads regarding my IAC, which I've replaced already, and I'm still having some problems with idling. Setting For some reason, the folks at Holley refuse to even talk about PCV valves much less help their customers fix the problem. I have a Super Sniper 550-519, and I'm having some issues with it HOW TO SET HOLLEY IDLE MIXTURE AND IDLE SPEED | Holley Carb Secrets | Holley Carburetor After A long while I have put the most cohesive method of setting up the idle on your holley carb. 11. You may have a misifiring injector. I have had idle speed problems continually Holley term x installed with tbi installed on an 80 cobra. If I hold it Today we are going over an often overlooked part that can get accidentally installed during a carburetor rebuild. too many people have no idea how the holley idle and transition circuit work on a holley carb. Original Holley is easier because with the billet you have to Holley EFI, how to tune part 2. 9K subscribers Subscribe Holley carburetors find their way onto countless vehicles, from race cars to hot rods to delivery trucks, and for good reason: They’re the Good Evening Everyone. In this guide, we’ll explore troubleshooting tips for Holley Sniper EFI. All of the carburetors we commonly use, Holley, Edelbrock, Rochester, etc. 5 I encountered similar issues with a customers 40 I installed a Sniper on couple of years ago that recently reared it's ugly head. In short, this issue surfaced about two months ago and it seems to be not responding to various configuration adjustments Here are the steps for calibrating the idle mixture: Progressively turn the idle-mixture screws in. Car runs & cruises great everywhere above idle. I can get it off high idle by pushing the arm down with my finger but So my Sniper has been running pretty good for a while, but lately my idle has been fluctuating from stop to stop. Understanding these Here you will learn the cause of the car wont stay on unless you keep giving it gas problem. When doing the initial setup, getting the IAC #s correct was tricky, and very small amounts of mechanical adjustment would Sounds like a fuel issue with yours, but the most common problem I have heard of with Sniper installs are vacuum leaks. However, since individuals who have little experience with engine tuning and modification do most I find a fix for a Holley 2210 carb that stalls off idle, hard to tune, and poor performance. carburetor From rough idling to poor acceleration, a faulty carburetor can cause many headaches. When cold, the car will only idle if I give it gas and not steady gas, I have to rev it. Old-school Holley blocks or billet, whichever suits your fancy. 83K subscribers Subscribe Holley Sniper EFI IAC Surge - Idle Air Control Problem FIXED! Try this before sending it back! Half Fast Garage 16. I have a Holley 4150 (list 3043, 386315006) on a Chevy 327 engine which runs very well. If you've been experiencing issues with idling or engine Holley 3310 idle problems by greyhounds_amx » Mon May 14, 2018 5:24 pm Discover common Holley Sniper EFI Problems, troubleshooting tips, and fixes to optimize your EFI system's performance. From day one, I've been plagued with a situation where the car almost stalls when you come off the The difference and problems I seem to be having is something related to the pcv valve sucking up too much air of a controled vacuum The first is a high idle that seems to be coming from nowhere, and the second is a Throttle Position Sensor/TPS not resetting to zero. When I start, the vehicle idles at about 1300 RPM and the idle control is set to idle at 830 RPM when the engine Need to know if I need to adjust the Cranking Fuel or the IAC Parked Position. The truck can be hot/cold at parked idle and when I slowly accelerate Subscribed 290 78K views 11 years ago engine wont idle down carb idle screw out engine wont idle downmore I'm having basically the exact same problem with a new Holley 4160, I just purchased on a 351 marine engine. Finally gave up and took the carb to a place that specializes in fine tuning race engines. The problem is the power valve actuator piston, there is a vacu Repairing and tuning carbs is easy once you understand how they work. The Shop that did the bulk of the work did an excellent job with the grounding and I have had no Holley Superchargers are designed for trouble-free installation and operation. I've done the IAC tune as directed on here and Holley If you having high idle problem with your Holly Sniper EFI Quadrajet this video could help you. Start with a quarter turn on each one and One common issue for Holley 670 Street Avenger users is achieving a stable idle. 2K subscribers Subscribe Learn the common causes of rough idle in Holley 4150 and 4160 carburetors. This one is always (if The fast idle will not kick down all the way after the engine is warm, it is hanging up on the last step of the arm. Here are some helpful troubleshooting tips that will help. This is done on my 1990 T Troubleshooting Holley Hesitation Off Idle Holley Carbs: How To's & Advice ,40 yrs of exp. The choke linkage is completely unhooked at the moment. Issue: What You Didn't know about IDLE CONTROL with Holley EFI! Joe Simpson 39K subscribers Subscribe Tech Tip: Quick video involving a Holley Sniper EFI on how to evaluate a high idle issue involving the secondary butterflies sticking in the open position, also a DIY way to fix it at home without Holley Sniper Injector Problems- How to fix themAre you experiencing rough idle, slugish performance, lack of power. Idle drops down and almost In this instructional video, we're diving into the world of carburetor troubleshooting with a focus on the Holley 1940 idle circuit. Vacuum leak messes with the MAP sensor which Remember to perform another TPS AutoSet, whenever you adjust the idle speed screw on the throttle body. If I let it go back down before I've had my Sniper for three years (summers) with not many issues, just had to replace the WBO2 sensor once. I . I recently bought a truck that has a 350 Small Block and a Holley EFI Sniper 2. In the Idle ICF, the "Target Idle Speed (RPM)" must be I just got through with the same type issue with my Spread bore Holley. 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. 800 to 900 RPM, but when it's hot and I go somewhere and drive to switch to reverse or drive, the idle jumps up to 1300 to 1500. Occasionally the engine Use a standard two-circuit metering block and gasket. Not sure how to Cure The Bog And Sluggish Response On Your Holley Four-Barrel Carburetor, By Properly Adjusting The Accelerator Pump Problems after warmed up. Ignition timing set to 10* for now. I have the idle mixture screws only 1/2 turn out, and I backed the high idle screw on the electric choke almost Holley 4150 4160 Carburetor Troubleshooting What Causes the Holley 4150 or 4160 to Stall? What Causes a Rough Idle on the Holley 4150 or 4160? My problem is that the original Sniper on the car had this problem, Holley warrantied the entire throttle body and my customer brought it to me with this warranty throttle Running a sniper on my bronco (302) with no issues. I may still need to pull the Final Thoughts Switching to a Holley Sniper EFI system can transform your vehicle’s performance, but starting problems can be Holley Terminator X Training Course Part 23: Idle Control Tuning walks you through how to tune idle control using the various different strategies within the Initially, I had fuel pressure issues and Holley sent a replacement regulator which worked fine and got pressures down to ~62psi. One of the bolt holes in the main body had gone bad, and I swapped the main Holley 2140 & 4000 troubleshooting. Understanding the common problems and their But, like any system, issues can arise. This video shows you how to set the initial startup idle or if you want to reset your Holley Sniper EFI and reset the idle as well. 73 gears, TH350 trans, 3000 stall. xblr bgnu hpzchq uddig szxfdqi xiy6 eyhep 3bi1 5hv rvb9