I used the tip of checking for arcing in the dark and bingo I can see white light between the epoxy-sealed body and metal casing on my MSD HVC Blaster coil. They key is to be persistent and solve the problem, preferably by identifying and removing the source of RFI. In the 10-pin harness, the white wire will only be used if you are doing ignition timing control. Start by using an ohm meter and check the resistance between the alternator case and the block. An ungrounded plate tends to reflect it-- sometimes right down into the ECU. If the oil thinned, perhaps it didnt do any damage as you only had it running a low RPM for what maybe 5-6 minutes? Assuming your ohm meter zeros when you touch the leads together, if it is even one ohm that is more than it should be. Reddit and its partners use cookies and similar technologies to provide you with a better experience. So he did. The first response I typically see to telling someone they have RFI/EMI issues is denial. ECU failure mode - constant resetting. - Holley Performance Products Forums "Hey, you don't happen to have an electric fan coming on at about 185 degrees, do you?" Efi can be trouble free for 300,00 kilometers. Since swapping the alternator didnt fix the issue we put the original (but still new) alternator back on the car. Another action I have heard of people taking is replacing the 1/4-20 air cleaner stud with one made of a non-conductive plastic like nylon or delrin. The problem is with his set up he will be cruising at 3000 RPM and grab the next gear and put a load on the motor without giving it more fuel IE stepping on the gas pedal, so it leans out and back fires and that brakes the blower belt. Sure it is. This motor got brand new everything except wiring harness/fuse panel; new Powermaster alternator, PerTronix Flamethrower Distributork, plugs, and wires. This despite having a quality brand of plug and coil wires that were well-routed. Get your engine running RFI-free and then you can play with increasing the gap if you'd like. This last section is only for those who are doing ECU-controlled ignition timing with their Sniper ECU. Atypical RF sources can be even stronger and have more deterministic effect on the ECU than the typical ones. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. JavaScript is disabled. More wires that are potentially unneeded. May God's grace bless you in the Lord Jesus Christ. Super Sniper or Sniper XFlow? Whever someone has an RFI problem they always start by explaining the effort they have made to separate their wires from each other. If you had precise electrical measuring equipment it could be done but that is far beyond what almost anyone has. Tony from the Holley forum thinks it might be the ECU.Thanks for any help. These wires should be removed at the connector and replaced with a sealing cavity plug. Many, many years ago I discovered the "lightning storm" mentioned in the article. Then it quits. For those who want to understand VR sensors in a bit more detail, this is an excellent article. These often end up bundled up in the engine compartment. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. But, if your symptoms persist then you need to consider that you may have an atypical RF source. WARNING! Also pay attention to the contact surfaces of the rotor and the cap. Same. First, one must address why ignition charge is preferring to run down the side of the spark plug rather than arcing across the gap. Ive been able to find some arching. EFI System Pro had everything I needed for my EFI upgrade. You're proof that it can be done. And before you put the plug wires back on, inspect the boots very carefully. Best after Christmas gift I ever got. But if you have any problem (particularly with a rich running condition) you can know that you know that it's not spark plugs when you can just swap in a fresh set. If you pick up soot then you've got arcing, and that's not good. Fuel Injection technical support Home / Support / Fuel Injection Sniper EFI HP and Dominator EFI Holley EFI Displays Terminator X and X Max Atomic 2 Hilborn EFI and MFI Terminator EFI Avenger EFI Pro Jection and Commander 950 Holley EFI V6 Holley EFI V6 Software - Build 300 Holley EFI V6 Software Build 300 Installer. I don't know anything specific to suggest other than what you read above. Larry. Great job, Dewayne. All times are GMT-6. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. A grounded plate tends to absorb RFI into the ground plane. However, I. I read a clean RPM signal on the handheld and in the datalogs. It is internally shielded and can easily be rendered an expensive failure. So, a second quick check is to disable the alternator (preferrably by removing the belt). Advanced throttle body injection systems capable of transmission control and more. Newer alternators, (such as the Ford 3G, 4G/GM CS130, CS144), are able to produce near-full current at idle speeds plus they are so much more electrically quiet. It never hurts to try but we've seen very limited success from grounding the air cleaner base plate. I know you said this is your biggest customer and you want to do right by him but I'm not convinced whatever happened inside the engine was your or holleys fault. If your MSV is set to 0.0v it means that any amount of voltage that is able to induce itself onto the green/purple wire pair will be interpreted as a pulse. #1 Sniper Setup Wizard Failure Fix 06-20-2018, 01:26 PM I'm finding that several Sniper EFI Systems customers are getting to the end of their Setup Wizard process and getting a message that says that the file necessary to complete the configuration can't be found. Strongly recommend. - Verify Wiring - ECU must be powered and grounded directly at the battery and the battery is fully charged. Free ground shipping regardless of order size! Instead of fixing the problem, we leave the problem in place and go on the defense, trying to cover up wires, ECUs, and sensors that might be affected by RF energy. One of our customers did this and said he saw what looked like a lightning storm. My only issue as present is some misfiring popping through the throttle body. Since I never throw out anything that can be re-purposed on another project I can see myself in the same situation. Holley sniper EFI error 33 and what does it mean? : r/askcarguys - Reddit I sincerely doubt that. I mentioned to the customer that he could be getting EMI from his alternator and he thought, "I know a quick way to check that--disconnect the alternator!" When downloading to the ECU in the throttle body it downloads to %100 then says error 33. All times are GMT-6. The problem is that the base plate is not conducting the RFI. Author: Matthew D. Lunsford Any information is GREATLY appreciated. Yes, doing this means that you will need to cut wire from a fully terminated harness. When you install them, it's a good idea to put a bit of dielectric grease on the inside of the boot on both ends of the plug wire as well. 23 2.1K views 3 years ago Last summer, a faulty ECU in my Holley Sniper EFI took out my 1972 Ford Mustang, bringing it into early storage for winter. The best practice is to take these management practices into consideration during the installation process, before RFI becomes a problem. Why? If you swap the TPS and have the same problem then you probably do have an RFI problem. 01-06-2023, 05:57 PM. Normally, powered sensors are not bothered by RF impulses. The setup wizard offers three cam choices for Stock / Mild ( 14+ In/HG vacuum ), Street / Strip ( 8-13 In/HG vacuum ), and Race ( 7 or less In/HG vacuum ) More aggressive camshaft grinds will likely require laptop tuning with the aid of the Sniper Software in general engines . In the case of our Project Shop Truck with cast iron Vortec heads, GM recommends the ACDelco R44LTS6 gapped at 0.060 inches.On the point of gap I'm going to rebel a bit for the initial start-up. I worked for Cadillac for ten years and I know how fuel injection works, that said, I kept telling him the set up would not work because it only uses a TPS and MAP for fuel delivery. check out the. Even new wires occasionally have defects, and all it takes is one crack in the insulation for a wire to start arcing to the nearest grounded chunk of metal. But since the factory can't know how long wires you might need they tend to make them too long. This install is on a 2000 Ram 1500 2 door short bed full size truck. But here we see that the alternator was somehow indirectly responsible--that the true culprit seems to have been the old MSD box. Terminator X Max 700R4 LS2 L92 heads and LS3 525hp cam and Jim Inglese 8 stack fuel injection. And you can plainly see the interference riding on the RPM signal. Use a clean white cloth and wipe inside of the cap. If you have done the steps above then you likely will never have any problem with RF interference. I have the progressive link kit installed that I bought originally from you. Great things are achieved through persistence. Thanks for the update. The immediate result is shown in the trace below. I have checked and rechecked every ground i can think of and even added a couple more just to be sure. Thus the Sniper, either in hardware or software, is at fault. ago It removes the oil from the bearings, now your metal on metal. Have you tried replacing the distributor's internal ignition module/magnetic pickup? You may know that old-school alternators (such as the Ford 1G, 2G/GM 10SI, 12SI, etc) do not support high current draw at idle. In some cases, way too long. There are a couple of things that you can do that are relatively easy and might give you some solid leads on the problem. Last summer, a faulty ECU in my Holley Sniper EFI took out my 1972 Ford Mustang, bringing it into early storage for winter. Any advice on the plugs will be awesome. Privacy Policy. It just takes diligence. Provided I don't find any RFI then I'll increase the gap and make sure I don't have any problems. If they don't seem too bad then use the smallest bit of dielectric (silicone) grease just on the area where the boot engages the ceramic. The most typical culprits are the spark plug and coil wires. Cheers. See what that does for you. Today my truck started fine, ran great, and is now learning. I have a similar problem with the sniper and hyperspark on a 68 Chrysler 300. Right through their front window. Dont buy your EFI anywhere else. You can take them back if you don't use them. Thanks. They're sending me a new Sniper free of charge, plus free shipping back to Canada. Where there are several options, opt for a conventional copper plug. The O2 sensor is not a passive sensor that simply sends back data. He said Holley said it will work and they have thousand out there to prove it. I don't know much about tuning but I'm getting frustrated, nobody has and ideas. You said there was metal in the oil how would that be caused by the injection? The Sniper has pre-programmed base calibrations that are a good starting point for most street drivable camshafts. As much as I hate to admit it I myself was in RF signal denial. That's because the ECU was seeing the same thing and flooding the engine because of the false RPM readings. Same. The HyperSpark unit you picked up is going to be a world better. Many times I called Holley and ask why it wouldn't tune itself. Just don't trust their application guide--be sure to specify the length of each wire in your set. You must log in or register to reply here. Any ideas? A few years back my friend built a 40 Merc with a 540 twin blowers and Holley FI and he had a 4 speed Lenco, and every time he would shift gears it would back fire and blow the belt off. Solving RF Interference Issues in Sniper Installations. I would absolutely recommend replacing that. If you don't have "Magnetic" selected as you rignition type then none of this applies to you. Then you'll get an outstanding product. I have updated this post a couple of times and each time it seems I point a more suspicious finger at the alternator. Copyright 2022 Holley Performance Products, Inc. All right reserved. I have seen individuals in your situation put on two and three brand new alternators of different brands and amperage ratings--and still get the same results every time.
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