Just add 5 or 10 degrees of advance and see if it doesn't idle better. Solution #1 Put car in gear take off and the engine runs GREAT, no issues drive for 10minutes take car out of gear and engine idles correctly IAC between 2 and 5 Solution #2 Shutoff engine wait 30 seconds, turn key wait for display to come up, start engine. Now I have most of the bugs worked out it runs fine on the highway and around town it's just the idle. Idle : IAC Rampdown : IAC hold positionChange this by maybe 2% in either direction. Should the iac% fluctuate? I then saw you guys have an awesome little gauge that can hookup inline to the snipers existing fuel feed?? Its on a big block Mopar with stock electronic ignition . Running a bbc with coil - my timing is perfect. have the system learn the higher speeds? This was an issue in the earliest version of the Sniper firmware. Im not sure what its doing, have messed with after start fuel, fuel at cranking. This will go a long way to improving your fuel map without manually adjusting the acceleration enrichment. Hey Chris! If I cruise down the road at lets say 60 mph and lay into it, she will take off and go. If the engine will after the 4 seconds that the IAC kick drops off then it's not really going to help.At any rate, it costs you nothing to advance the ignition and see if that doesn't improve the idle, right? Hey Chris, I installed a Holley sniper on a small block 400, first start was great! Hi. I do know that the reference angle is 57.5, the inductive delay says 100.0. If you are using your Sniper EFI System to control timing, navigate to Tuning > Advanced > Advanced Idle > Idle Spark and ensure that the Idle Spark Enabled is set to Disabled. I was looking at a data log from my truck earlier this week and noted that at idle my IAC was zero. Ran 2 Holley carbs and an Edelbrock. :-DStill, I hate to leave someone hanging so I'll try to help. I notice at 2-3% tps the iac is 18-25% and it stumbles, when the iac gets to my hold position of 30 it stops. A question I cannot get a 100% answer on is can you piggy back off the Sniper EFI TPS for an electronic transmission? If no air is passing (and the idle doesn't drop) then your IAC is working. I've tried repeatedly re-creating the scenario in hopes that the E.C.M. I have installed my Sniper and the car runs great. We're never going to fill up your email box with nonsense. Thanks for any info./insight you can provide, Mark. If it creates an issue (not normally the case) then you'll know. It will drop down to 400 RPM then climb 500 and then shoot to 900 and then come back sometimes two or three times then catch it self an idle just fine again. They are prone to be inaccurate. Please check your process again and see if you can see very specifically what is not working correctly. We're having trouble with a Ford Maverick 302 V8, using ethanol. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Should it not do the opposite and do this on a cold start not warm. On a cold start it will idle at 750 everytime, But if its hot start it will jump upto 1600rpm for 2 seconds then come back to 750. I watched the butterflies start to open at about 35 on TPS. Resistance results in heat and heat results in more resistance. And all too often we don't take that extra step of using a piston stop to ensure that the timing pointer is on zero when the engine is truly and exactly at top dead center. It didnt do this with the carb on it. I tried adjusting my IAC up to 10deg in both directions with no change. Check fuel pressure too (. I have turned ignition off turned screw in 2 turns and turned ignition back on and tps is at 1-2% not sure whats going on. I can adjust at 160deg, but my fans turn on at 180deg. Bolt on 4150 Flange Carburetor Replacement. and if you do run into any problems then, yes, the plethora of tunability adjustments available through either the handheld or the Sniper Software will certainly be enough to get you right where you need to be! When I put it in gear, it drops so low that it will stall if I don't add throttle. In the time it takes to add your email address you can be at the top of the heap for getting the latest information from our authority. I'll have to check again tomorrow. Which means you either need to increase that number or increase the ramp decay time. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. If you haven't installed a During cruising at 30 miles and release the gas pedal the engine revs at aproximaly 1500 RPM and it won't drop. Jump on board now! Kind of cuts into forum time. If I put the vehicle in gear the idle gets higher with temp. What must remain foremost in your mind is that the only thing that can cause the idle to increase is additional air getting into the engine. I will a, Scott has been very helpful and informative on guiding me through the purchasing and installation of my terminator X max system. 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. Yes, having an accurate TPS is very important at idle. I didn't find your site until I was having trouble. When I drive with warm engine the IAC is at 30% when pushing gas, but shouldn't it be at 0%? The Super Sniper will allow you to monifor fuel pressure if you add an electronic sender but this is not an option with the standard Sniper. Two things to keep in mind as you do that. My car will now start when its cold, but after about 30 seconds the idle drops down and begins to run like crap. Physially manipulating the linkage by hand will generally reveal if you have a sticking linkage that is preventing the TPS from returning from zero. It won't take much! You can re-enable this after you have completed this idle speed adjustment process. That is the first thing you must find. (Don't drive and watch--get a helper!) check out the. As you see above, the Sniper is going to dump in a maximum amount of fuel at zero TPS, begins to remove acceleration enrichment at 60 percent TPS, and then removes all acceleration enrichment correction at 100% TPS. Stupid question, but where do I see if it's entering Learn mode? Target AFR at idle is 13.8%. It sounds a little different from mine, since it commands a 1300 or so increase intermittently. So I have been driving it for about 400 miles now to numerous car shows and going out for cruises around town, trying to work some of the bugs out from everything we did this winter, but I notice when I take off from a stop sign or I cruise at a very low speed (say30 mph) it seems to be very boggy from no throttle to about 1/8th throttle. I have one customer who is having some similar issues and his AFR is down at 9.6:1 when it won't start. I believe that you have this problem solved now with your new inline filter/regulator. As always, I recommend great restraint in changing any of the parameters until a significant amount of learning has taken place. The noise changes sound with the throttle position. 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. One of the signs of a vehicle with a rough idle is a faulty Idle Air Control (IAC) Motor. Once you confirm the operation of your IAC then it's time to read my article on Solving RFI Problems. around 45 mph it bogs down, catches itself, bogs, catches, bogs and catches. I recently had IAC issues identical to what you describe. When you open your IAC to 30% you are naturally going to have a high idle condition. Just getting it to act right at startup is a struggle. Changing the rpm curve and target rpm has no effect. Honestly, I've never seen this happen but if the butterflies were misaligned on the shafts it could allow too much air to enter. Key, I believe, in this success is solid connections, resistance-free signal and ground paths, and solid RFI rejection. I have a Holley Sniper for almost 11 month now and it was running fine with no problems until now. If your RPM is 2000, your TPS is 0, and your IAC is not closing, then there is some problem. A good example of why it's so important to run a good pre filter in the fuel line. After this whole process, the car normally rotates without a very abrupt pedal. me know how it works for you. It is working fine when you restart the car, controlling idle perfectly at 8 steps open so it is unlikely to fail when the car warms up--or correct itself instantly when you restart it..So, if you don't have any vacuum leak, and the throttle plates are fully closed, the only thing I can guess is something is causing your ignition timing to change. 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. Drives just fine but won't stay running unless I keep my foot on the gas. My IAC and TPS show zero when it does this. Have you checked your fuel filter and made sure it's not plugged?If both of these are okay you're going to have to find a way to monitor your fuel pressure while under load. Even at 0% it's sucking a bunch of air through the IAC port. Somehow air is entering the engine that was not entering the engine when you originally set the idle speed screw. I've changed all the Get a solid feeling for where it is when the engine is warm and the idle speed is correct. No power at the programmer and no fuel pump running. itself out and hold idleeventually stalling. 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. >I'm using russell hi pressure gas line to feed the gas up to the sniper and using the stock steel gas line that use to be the feed line for the carb to return the gas to the tank. With everything else being right and since you can make it start by adding fuel it seems like you must have some sort of fuel pressure issue. You can disable the idle spark control at the locations below. MAP Sensor. :-). Hey Tommy, we've got at least one thing in common. Also when ac kicks on it will idle down and stall. Consider adding fuel in the AE vs TPS and/or AE vs MAP ROC tables in the area where the stumble is occuring.Since this is happening at such low TPS levels it is possible that your engine would prefer a lower (richer) target AFR number at idle. My issue is that the TP% will not reset with key cycle and its idleing at 9% TP. I figured out I was going the wrong direction when I was messing with the AFR programming. If I read it correctly, the solution from the other thread seemed to fix a constant 300 or so RPM increase. 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. We do that but most places don't. My problem with the sniper is the whistling and hard throttle pedal, I have a 700r tranny with a kick down cable. Maybe give it a half-turn before you start it and then start and tweak. I thought 12.0 was leaner at idle, but I figured out I was wrong.lol. It is a common one. If the TPS is 1% or below then the air is coming from somewhere else. If not then I think you are going to find that this will solve much of your problem. applies here because it is so important to realize that just because the IAC Sniper EFI Tuning & Tech. datsun sniper efi Holley RetroBright This 1974 Datsun 620 Bulletside Cruises With The Help Of Sniper EFI Bradley Iger 01/13/2023 features Latest News sweepstakes 2023 Hemi Engine Sweepstakes Gen III Hemi Enter To Win Holley's 2023 Hemi Engine Sweepstakes For Your Chance To Win A 600+ Horsepower 392 Stroker! I installed my Sniper and the engine fired up great. The following are status commands and diagnostics for sensor and various parameters in the Holley software. Engine has never stalled with Sniper system, once placed in Drive it just goes!!! Did your process to adjust idle to 860. Great work, expert! Bolt-on carburetor style EFI for your classic car or truck. And, hopefully, within those degrees you will find a place where you don't get the whistle. Holley Idle Air Control Motor Idle Air Control Motor Fits the Following Applications: Sniper EFI 90 mm, 92 mm, 102 mm Throttle Bodies Digital Pro-Jection Systems Avenger 4-bbl TBI Commander 950 Terminator TBI Seems like its too slow to grab idle when ac kicks on. This page was generated at 12:25 AM. I have been reading these posts and have learned a lot. Once engine is warmed up been driving for awhile. 90% of time with engine hot. !I called Holley today, and before I could even described the symptoms the You can adjust this number up or down but there is really no need to change it unless the car is stalling.The sucking sound is just what happens when the Sniper EFI System is paired with certain intake manifolds. That's not the IAC Hold Position, it's a percentage value. 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 EFI Self-Tuning Master Kit - Black Ceramic Finish 3 different fuel pumps. Copyright 2022 Holley Performance Products, Inc. All right reserved. Also what would you say a desired idle should be for a 3 speed automatic ford? If you're having issues with your Holley Sniper IAC getting stuck at 20, there are a few things you can try to fix the problem. Idle Tuning is a very important part of tuning any EFI system, especially our self-learning units like Sniper or Terminator X EFI. Copyright 2022 Holley Performance Products, Inc. All right reserved. Since the shield was put on, not a single problem, not one. Could the IAC be broken/malfunctioning? The 5-6 times it has happened now have been after the car has been running for at least 20 minutes. *Possible delays due to Covid-19 click for more information. 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. I think in some of the Wizards with the handheld it doesn't use 57.5 as the default. Also, I was seriously rich at idleso rich it hurt your eyes. It then idles up from 750 to 1100. Some advanced conceptsIf you have the Sniper Can-Bus to USB Adapter, you can connect your laptop, open the software to the learn table, and get a visual for where in the table you are experiencing the lean bog.
Pcr Test Within 90 Days Of Having Covid, Which Part Of The Chromatogram Represents The Asn Oligomers, Clark County Insane Asylum 2019, Mark Lawrenson Bbc Predictions, Des Moines, Iowa Recent Obituaries, Articles H
Pcr Test Within 90 Days Of Having Covid, Which Part Of The Chromatogram Represents The Asn Oligomers, Clark County Insane Asylum 2019, Mark Lawrenson Bbc Predictions, Des Moines, Iowa Recent Obituaries, Articles H