holley sniper efi iac problemswhat happened to mark reilly strong island
I would suggest at that point you need to contact whoever is providing your tech support and find out why the default values are not working for you. We offer some tips to help with that. Try it! Hey Chris, I installed a Holley sniper on a small block 400, first start was great! Two things to keep in mind as you do that. I think I figured some of my problems outI'll try to explain. However based on your reply I connected the Fuel Pressure gauge and If i adjust the throttle plate screw in to bring IAC in to proper range say around 7 the engine is running around 2000 rpm. Good afternoon Chris, thanks for taking the time to help all of these folks that didn't purchase from you- myself included!The issue I seem to be having is at idle in both park/neutral and drive. If you did not rotate the distributor to set the actual timing to 15 that might be the only issue. (Note: in the original version of this post we had a section about checking the idle speed curve setting. Sniper EFI offers superior throttle response and wide-open throttle power. RPM = 1200My slow gear I leave with 650 RPM, the IAC Position I leave between 5 and 6%, the Holley Sniper How To Set The IAC (Idle Air Control) in 5 - YouTube I had a customer who struggled to understand that. If I were there in person I would test the function of the IAC (see this article.) Chris, I recently installed my Sniper and have an intermittent idle problem. It starts cold fine, its just when its hot. Plus, you can email that file to me and I can be of more help. Due to when the pump i'm using now makes a loud howling noise when it gets ran for awhile and it gets at a 1/4 tank of fuel or less. Several good bits here. installing and cruising down the highway 70 mph I just wonder if all I have to do I was shocked to see it at 95lbs!! SNIPER EFI TO HOLLEY DUAL SYNC HARNESS Part# 558-493 $34.44 Qty: Add To Cart Idle Air Control Motor Replacement Idle Air Control (IAC) Motor for Sniper EFI TBI Systems, Sniper 90/92/102mm Throttle Bodies, Terminator TBI, Avenger 4bbl TBI, HP 4bbl TBI, Commander 950 & Digital Pro-Jection Systems Part# 543-105 $71.72 Qty: Add To Cart Is this an issue to worry about? If your TPS is at zero and your IAC is at some random number above 8% (but not exactly 30%) then for some reason your engine has not met the conditions to ramp down to target idle. I have a feeling it's something simple but I thought I'd ask you first before I inadvertently change something that affects other areas. Any suggestions would be appreciated. Does this seem reasonable and how hard will it be to get the idle and off-idle performance correct? I set it exactly like the instructions said and my iac is not only all over the place but when I finally did get it to the 2-10 range it's highlighted in red. Holley Sniper EFI 550-552 Holley Sniper EFI Autolite 1100 - Gold Also what would you say a desired idle should be for a 3 speed automatic ford? TPS 0. have the system learn the higher speeds? By the way your site and your accessory products are nice. Duration @.050 is 240 intake 246 exhaust with .574/.578 lift. Should I just disable idle timing control? Let's start by not assuming anything. You will find a startup IAC percentage, an amount of time it holds at that percentage, and an amount of time it takes to idle down to the normal idle speed.By default, that number is 50% at normal operating temperature. carburetor setup, but it does blow when I can't jump on the highway like I use As I have it set right now, my idle at park is in the high 700s and my desired idle in gear is set at about 700 cold (80 degrees) and gradually lowers to 590 once engine temp reaches 160 degrees. Thanks Again for your help. Thank you. Let Give us a hand! The weather in Ct has finally improved and I have put about 60 miles on the car with the Sniper system. As soon as I got the new one installed and wiredit fired right up and did everything it was suppose to do with no issues. Sniper EFI Update: Weeks Later, Do I Still Feel It Was Worth It? Are these compatible enough? At 0% it shouldn't be sucking any air through that port, correct? shut truck off. You just need to go back through the IAC adjustment procedure now that idle timing control is enabled. It sounds a little different from mine, since it commands a 1300 or so increase intermittently. I had this same exact issue. Check the Distributor Tach Connection to the EFI. Holley documentation and videos didn't work and the $300 I paid for "expert" tuning didn't work either. Often, folks will say, "I did everything you said. It didnt do this with the carb on it. There are a few tell-tale signs that can help you diagnose the problem. MSD pro billet and 6AL box normal city driving, I no longer have other problems I had with the original Holley Sniper Iac Delete I think that the more important point is that Holley kept sending him units until everything was working. Maybe give it a half-turn before you start it and then start and tweak. Engine has never stalled with Sniper system, once placed in Drive it just goes!!! This page was generated at 12:25 AM. It only lowers to 2-6% when I take my foot off the gas. In most cases the IAC (Idle Air Control) circuit is the source of the whistle. Don't be surprised if one or the other is slightly open. Please check your process again and see if you can see very specifically what is not working correctly. :-). I know its not flooded because I can pour a little gas in the throttle body and play with the accelerator and it will start and run fine. I am right back to where I started. Tuning Your Sniper EFI System for Progressive Secondary Link Use Make sure that your blanking level is _below_ that (being careful not to find yourself in the situation I describe above.) ps. But if I take off from a stop and go to 1/4 or 1/2 throttle its fine and takes off like a banshee. Target AFR at idle is 13.8%. Can the return line be an issue?I have had 2 faulty gpa-4 255 walbro pumps go bad. The motor has 376hp at flywheel and the car is a stick shift. What might cause the TPS to go to 2%? You'll have to go back and forth a couple of times to get it just right. We've already tried adjusting the Acceleration Enrichment chart in all ways, going up and down, RoC Blanking, everything, it has no effect. Sorry I didn't buy from you but I didn't know you had sold them. He thought that something was wrong because when he set the idle 50 RPM below his target the resulting IAC postion was far too big. Comp. Im not sure what its doing, have messed with after start fuel, fuel at cranking. Intake has been on and off 3 times no change. But after sitting static idling for a little bit, the IAC goes to 100% & stays there. Im thinking a faulty TPS. If i set the idle to 750, the only way i can get it there is to turn the idle screw all the way out but then its at 0 iac. And, while that is happening, make a note of the temperature before you engage the starter, and then the rpm when it starts.The Idle Parked Position is set on a temperature-based graph like the Idle Speed Curve. Hot start it most of the time wont start unless I give it a little throttle. And the rather cavalier "Absolutely!" Going in the direction you did (higher) is going to reduce the acceleration fueling that the engine sees. What I would recommend is getting somewhere that you can spend a significant amount of time doing starts. Hello, Chris, thanks for the help.I have not installed the software yet, and I'm having trouble with two cars. Then, the next time I cranked it, the idle went high and won't come down!" That's what you're seeing. :-). That's not the IAC Hold Position, it's a percentage value. But I wanted to go ahead and answer this so that it would make sense to someone who might not go that route.I think the first thing I'd do is try another pressure gauge. Also ensure the TPS Position returns to zero at idle, & the IAC Hold Position isn't setup too high. Any idea's? Not good.There isn't set solution here that works for all engines. )So before I hook up another gauge to see if the Auto Meter is bad (assuming I can find a 0-100 test gauge in my shop). Don't try to correct for the fuel. Thanks for the info Chris. You can find those settings here: Handheld: Tuning > Advanced > Advanced Idle > Rampdown, Software: Idle > IAC Settings > IAC Ramp Down. Ive had an idle at neutral as high as 2400 rpm. Throttle Tip-In puts you in a part of the fuel map where you stay for only milliseconds at a time. He has walked me through every question Iv. It could be that the air flow across the secondaries as they are opening is creating that whistle but that isn't commonly the case.Did you check for leaks around the gasket of the air cleaner? Please help. The ticking is inline with the fuel pressure I feel squeezing both the fuel return & delivery lines (like a heartbeat). I appreciate the help youve given to everyone as it continually helps me! If I read it correctly, the solution from the other thread seemed to fix a constant 300 or so RPM increase. But when you have it then you can look for exactly what the IAC is doing at that point, and if there is anything that might lead to this happening. So check that timing and I think that you're going to find you need a good bit of advance. Then your low idle problem will go away. This is extremely unreliable afrer warm. Overview. Good luck! You can disable the idle spark control at the locations below. Edit I just ordered a Holley return / regulator and cap for the sniper ouletOh, this is not an OEM Master Kit, but the fuel pump should be the same EFI Pro shipped this kit. If your RPM is 2000, your TPS is 0, and your IAC is not closing, then there is some problem. All times are GMT-6. Thanks for any info./insight you can provide, Mark. My IAC was constantly at 100% at idle. It could be a couple of things. That is not the way to go. If your TPS has snuck up to 2% then your IAC will be at the hold position, which by default is 30%. Holley Sniper EFI Troubleshooting Mudford Garage 8.6K subscribers 38K views 3 years ago My Bronco with Holley Sniper EFI was running poorly. So as much as I can I have been taking off real slow and let it fall on itself to try to learn and its not learning its way out of it. When you key on, you will hear three distinct sounds: The ECU initializing the IAC, the fuel pump priming, and the injectors firing their prime shot. I used the Casper's Electronics 108103 splitter and carefully soldered my connections. It is how the engineers allow you to clear a flood condition when you detect it. If you have somehow overlooked this, start here: 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. Car was running great initially. Thank you for any advice. Holley sniper, bogging/ losing power "NOW FIXED" Solving RF Interference Issues in Sniper Installations - EFISystemPro.com My sniper is doing two thingsFirst issue, the idle is set at 800 and will idle fine, then There is a glitch in the system. Having a TPS that won't go lower than 9% will affect the acceleration enrichment correction, and could create a stumble at the first moment of throttle opening.Yes, the IAC can and will fluctuate depending on changing conditions. When I covered the IAC with my finger, the RPM dropped so low it stalled. I've made all the adjustments, all the settings, and the IAC issue is driving me crazy. Holley Sniper IAC Surging???? Then why don't you Get On The List for Emails Straight From Our Pro? Do you have a PCV on the engine? I have one customer who is having some similar issues and his AFR is down at 9.6:1 when it won't start. If I put the vehicle in gear the idle gets higher with temp. Camshaft is M-6250-B303 .480 lift intake & exhaust, duration at .050 is 224 degrees for intake & exhaust. Fortunately, Holley has another product that can solve that: Hydramat.. Hydramat is not inexpensive but you won't believe what it can do. As inconvenient as it might seem, I'd recommend keeping a timing light handy and checking your timing during the high idle condition and then again after restarting. Copyright 2022 Holley Performance Products, Inc. All right reserved. I don't want to go on too long here but once you know if you're trying to add or remove fuel, there are a couple of ways to go. TP range is normal goes up to about 90% with throttle pedal to the floor. It appears that I could now use the dongle and a laptop to custom tune for idle issues if needed. The last pic is with the car in Drive. I have installed my Sniper and the car runs great. An undersized or partially plugged fuel filter is a classic EFI installation mistake. That way you can get into that part of the table that needs tuning, and you can watch your learn numbers grow. Eventually the IAC will drop back to zero, I'll readjust it to 850 RPM & 2-9%, and then watch it steadily climb again. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. If more info is needed just ask. Initial thought is timing but Im running a cd box and the ecu is not controlling and I did not physically change it during the install. Cycling the power to the Sniper EFI would cure the problem, but not prevent it from coming back. holley efi. Hope this helps! No timing control, coil negative ignition type. It has a lightweight centrifugal spring kit installed so I reach total timing around 2500 rpm. But now that Terminator X is available, I highly recommend going that route. Those little 1/8 NPT gauges are pretty inexpensive and generally pretty easy to find locally.If you confirm that the pressure is indeed 90 PSI you could pull the fuel pressure regulator apart and check it. Then do it just a bit faster--just enough for it to bog a bit. Just getting it to act right at startup is a struggle. It's a Chevy 350 bored .030" over it has a cam in it what I was told is the cam has the firing order swapped. By the way, this is a new installation on a 69 Camaro, stock 350, dual sync, etc. I would recommend that you call first thing in the morning, as they tend to get quite busy during the day and wait times can get long. Holley Sniper IAC Problem - Holley Performance Products Forums Ok, we have enough Sniper systems out there that I thought it would be a good idea to create a posting on challenges that might arise during installation. I'll have to check again tomorrow. I asked him a million questions and waited a long time to save up before purchasing the system and I have asked a lot of questions throughout the installation process. is train the system or there is actually something wrong.I do love the system at Switch power to the Sniper on and crank the engine. Chris's Idle Speed Adjustment Instructions*: *Note: If you are using your Sniper to control ignition timing then I recommend that before you start this process you disable idle spark control If you are trying to do this while the ECU is simultaneously trying to bring your idle under control by adjusting the advance it is going to be counter-productive. Also its extremely rich at idle. I have not heard of this. If you can track specific engine coolant temperatures where the engine stumbles and dies that would be a good place to start. It only comes back to normal if I turn the engine off and on again. We have shipped quite a few of these to customers in Australia and New Zealand so I know that there is becoming a good following there!We recommend this Inline 10-micron fuel filter to prevent problems like that. I installed another return spring for the rear plates problem solved instantly. I' m going to put the 3rd new pump this coming friday. It could be, but that seems unlikely.Instead, you need to look at the basics. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. It's all part of the pleasure of EFI. Doesn't want to start, runs like crap. That is the only way to fly. Wish I knew about it before I made my purchase. To finish, I rather tightly twisted the TPS signal and ground wires all the way from the controller to the Sniper TPS and very carefully routed them away from sources of RFI. Idle quality is great, RPM is good, sometimes IAC is jumping around from 35 to 60. I enalble the idle timing control and fired it back up Iac was at 32% but it would come back down after a bit to around 26%. If I go any more it will ping. They always responded to my questions with guidance that helped me choose the right system for me.
Wrangler Authentics Men's Performance Shorts,
Mc Cuskers Death Notices,
Yorkie Puppies For Sale In Atlanta, Ga,
Richest Native American Tribes In California,
Articles H
