Typically it 5 and 7 that cross fire. Bad ignition modules will first start giving problems like working when cold, and not working when warm. "The 1500 has always been as smooth as butter on the road, thanks to its coil suspension in the rear, and for 2019, a number of improvements make it ride even better. Also excellent for points-based distributors - high primary resistance helps reduce points burning, pitting. Search Over 30,000 Corvette Parts And Accessories To Restore 1953-14 Corvettes. This was evident when I reversed the polarity of the 12V power feeding my Azden PCS-3000 2M FM Radio and I saw smoke exiting the back of the radio's enclosure. Dirt Cheap Electronic Ignition. Remove the dust cover to access the HEI Coil and disconnect the three wiring harnesses from the distributor cap. The other components of the distributor, such as the mechanical and vacuum advance, gear drive and shaft, are all very similar in function to those found on a breaker-point system. Read the tech article on HEI Coils And Modules, brought to you by the experts at Chevy High Performance Magazine. 035" resulting in a modest gain in MPG and HP. A faulty pickup coil if not repaired quickly can lead to lack of engine spark and failure of the fuel injectors to fire, disabling your car to start. Source(s): sbc 350 hei switch pick coil it: https://shortly. Be sure to move the connector around while you resistance test, as the pickup coil wires can break right at the terminal in the connector, and make intermittent contact, depending on where the vacuum advance moves the pickup in its. As a replacement distributor for small or big block engines, this two-piece small body unit doesn't have the clearance problems of some replacement HEI distributors due to its external coil. ~ Pick-up coil continuity is tested by connecting the ohmmeter (on low range). I checked under the hood and noticed that the fusible link had come off the junction block under the hood, fixed. if the vehicle has an intermittent fault, at certain times or revs, this is generally an engine problem, and is not the fault of the. Replacement Magnetic. Exclusive Content. this means that if the ignitor has a fault, it will not operate at all. ~ Pick-up coil continuity is tested by connecting the ohmmeter (on low range). =====It is always advisable to change the ignition coil when replacing a module on an HEI system. I would bet that anyone owning or driving one of these older, pre-HEI system equipped vehicles, at one time or another has run into problems with their. What is the Replacement Ignition Module and pick up coil for my Mallory HEI distributor? Some of the most common problems can come for the actual wire crimps that. I have no answer to this dilemmahave run a home-brewed HEI with Toyota gear on my '74 F and it ran great with no problems. Thought it was the pickup coil, so I changed it and my truck would still not start. The pick-up coil assembly is held on the distributor with a thin snap ring covered by a fiber washer. Unfortunately their power output is limited and they require routine maintenance to work properly. engine cranks but don't start? don't worry! erik the wrench is here, we test for fuel, test the coil and distributor / ignition. When we install the new meter movement on bi-coil tachometers, we can also replace the meter movement as well with a 4 pole one, which makes it quicker and more responsive. Front park assist is available as is two more paint. If you need to just test the ignition coil, your starting point is TEST 3: Testing The Ignition Coil's High Tension Wire. This service was begun in 1977, by myself, David Ray, to meet the needs of those that want to utilize an HEI ignition system, where the size of the large, coil in cap HEI will not fit without severe clearance/interference issues, and/or problems, or, to retain the appearance of a stock point distributor, and, still use a better HEI ignition system. You may have to modify your firewall to clear the HEI's larger cap. When we rebuild your tachometer we upgrade it so it will work with a H. The cap has a section with two potential plug ins. Since 1974 we have been providing quality electrical products to the street rod, hot rod, custom car, truck and racing markets. Note that installing an HEI distributor and installing a Pertronix conversion in a points distributor are two completely different animals; if you're installing an HEI distributor (large cap, integral coil), you MUST supply a full 12 volts to the "BAT" terminal on the cap, which requires running a 12-ga. I replaced points ignition with HEI on my 1971 Olds. 2 wires from each inductive pickup to each HEI and 2 wires from each HEI to each GM coil. The bushings go bad and the coil wears into the housing causing a short and in effect a no start situation. Disconnect Tach and battery wire and wire connector from distributor. This is nearly ideal for the C849 coil. I converted an in-cap coil HEI ignition on my 1991 Corvette to an external coil HEI setup. How to Test an Ignition Coil. Powering them through the original wiring will mean that the Ballast Resistance will still be present. Celebrate with us the passion for the BMW brand – at BMW. Pioneer of do-it-yourself automotive wiring systems. Under normal driving the HEI is powered by +12v from the ignition switch. That might be ok for a half-ton pickup that never sees more than 4,500 rpm, but on a muscle car, especially one that's been modified, losing voltage means lost engine performance, and not being able to take advantage of the engine's potential modified. This is why MSD claims that if you replace the coil in the cap with there Blaster coil it will increase the max rpm to 6000. I put one lead in distributor body and the other on terminal on pickup coil it showed infinite, so that ok. Remove the rotor and pick-up coil leads from the module. 100% satisfaction guaranteed. I have replaced the cap, coil, and alternator. This is the solution that Jacob’s, Universal, MSD, and other companies have decided to use. Check the back of. Mid to late 80's F-body vehicles had an slim HEI w/external coil, BUT these are not stand-alone units (no vacuum advance, timing is computer controlled). I put one lead in distributor body and the other on terminal on pickup coil it showed infinite, so that ok. I have a 1986 Chevy c/10 with the 305/5. How do I hook up my tachometer? Standard Ignition Coil If you have a standard ignition coil you can use the negative terminal of the coil for the signal source. Typically it 5 and 7 that cross fire. To check the coil use an Ohm meter. Got it back together she would crank but if you turned her off after warm she wouldn't start again. 3 ohm - 140407CH. Meaning I would need to find another distributor altogether. I stretch the spring a little on the rotor bushing to ensure good contact. The pickup coil monitors the rotation of the distributor and triggers the ignition system at the optimal moment to produce the best timed spark for best engine performance. The points also control the timing of the spark. New one is in, and the problem is solved after many hours of aggravation. Pickup Coil Testing • The pickup coil, located under the distributor cap on many electronic ignition engines, can cause a no-spark condition if defective. Timing chain set and camshaft must be removed. Can I use the small cap Gm HEI if I pull the timing control module out of the distributor and just use the mag pickup already in it. We've included a simplified wiring diagram to. This kit is equipped with an HEI Distributor that fits Chevrolet Chevy GM GMC Truck Late Model Inline 6 Cylinder 230 250 292, Cast Iron Hydraulic or. Does this seem like the source of my problem? If so, it seems that my only option is to get 12v constant hot with a 12gua wire off the starter relay lug, and use a relay to switch it on to the coil. The HEI and TFI are basically the same thing but the HEI has the proper input for a magnetic pickup distributor. When the teeth are aligned, the magnetic field increases, which induces a electric current through the pick up coil windings. This happens when the ignition coil or module becomes too hot. weak or cutting in and out. An inductive pickup, in itself, has no electronics about it - just a magnet and a coil in essence. Engine cranks but wont start (1990 Jeep Wrangler) tested ignition wire for spark when cranking, no spark. this means that if the ignitor has a fault, it will not operate at all. The coil can be check with a. Follow Us. Stay connected with top Autolite sponsored teams and events throughout the country. 0 engine this distributor has a vacume and a computer conection each time i change out the distributor it runs for a while then there is no spark i am thinking something is short the pickup coil. i got my meter out and read across the pickup coil, it tested good. • The pickup coil must generate an AC voltage pulse to the ignition module so that the module can pulse the ignition coil. I also tried to wire up a GM HEI ignition control module with the fj60 coil, but the engine did not fire. The coil begins to energize waiting for a ground to make it discharge. Timing chain set and camshaft must be removed. Buy TSP HEI Distributor 8-Cylinder Pick-Up Coil JM6925: Coils - Amazon. (High Energy Ignition) system. A bad pickup coil may mean a lack of engine spark because the spark plugs are not receiving the proper information to fire correctly. When fitting new contact-breaker points in the distributor, the normal way of checking the gap between them is with a feeler gauge. C_: I have had this problem three times on HEI distributors, and it's been the module every time. What causes GM HEI coil failure? but I'm not so sure that was the real problem anyway. Some energy is now stored in the coil's magnetic field (E = 05LI2). if the vehicle has an intermittent fault, at certain times or revs, this is generally an engine problem, and is not the fault of the. This causes the coil to suddenly lose its ground, generating a high-voltage pulse. The distributor has three electronic parts which make it fire. Exclusive Content. When a vehicle will not start, misses often or stalls frequently, its. I now have 30K on the motor and it runs great except for one problem: The module in the HEI distributor keeps failing. HEI and ELECTRONIC SPARK CONTROL FUNDAMENTALS AND TROUBLESHOOTING Troubleshooting the HEI coil in cap ignition. also wiggle the wires while you take the reading. Receive US Customer Support along with Fast & Free Shipping!. Direct steam injection involves the discharge of steam bubbles into a liquid at a lower temperature to transfer heat. Permanent magnet and pick up coil; The HEI system controls the primary current in the ignition to time the spark via a magnetic signal of the pick up coil. I thrice checked the plug wire order, and it is right (famous last words) New coil too. engine won't run. I'm battling an overheating problem in my. NAPA has the stuff I use, and it comes in a box with 10 packagesand it ain't cheap. On my initial static test, I got 0 ohms resistance across the pick-up coil but observed that the plug was all gunked up and pretty corroded, so after I cleaned it up I got 314 ohms (within spec) and it ran fine for a day. I don't run a HEI, but,I found this it might be a start. Best Answer: GM HEI systems are pretty bulletproof, their weak points were the pickup coil wires breaking from flexing from the vacuum advance and the rotors sometimes get hole burned in them from all the spark the HEI makes. I ran down to Advance and got a new coil and still no spark. Today I re-tested everything on my HEI system on my 80 monte carlo. 3 ohm - 140407CH at Dennis Kirk. 0 engine this distributor has a vacume and a computer conection each time i change out the distributor it runs for a while then there is no spark i am thinking something is short the pickup coil. The Racer Walsh Stage 2 camshaft is a street / competition grind. That did not come until 1981 with the 280ZX turbo engines, and the ECCS system. how do i switch the pick up coil in it? i need to know step by step how to change a pick up coil in my pro form hei. Chevrolet Malibu Ignition Module or Coil May Fail Causing Engine Misfire - 152 reports. Missing/sputtering can be heard in all gears, especially above 4,000 rpm. I have checked and replaced the ignition coil, pick-up coil, control module, cap, rotor, and even the RF capacitor and wiring harness but with no avail. This should not be a problem as long as a decent heat sink is used on the HEI modules. Each Duraspark Electronic Distributor is custom calibrated on a distributor machine and blueprinted for your Ford engine to provide maximum power, torque and instant throttle response. HEI caps have the coil built into them , an all in one ignition as compared to a external cylindrical coil. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. You can use many different coils in the conversion. Replaced coil, worked great for a few days then started skipping intermitantly. I have a 1985 Chevy C10 305 V8 4BBL with a HEI distributor that has no spark. note: the pertronix ignitor is effectively a "go" or "no" system. or cars for that mater. If you need to just test the distributor's pick up coil, your starting point is TEST 7: Testing The Pick Up Coil Signal. Simple-just get an HEI distributor with the coil in it install it properly, find the power lead coming from the ignition switch hook it up and its over with. It's necessary to remove the distributor drive gear and the distributor shaft to replace the pickup- - - -it's held on by a VERY thin snap ring at the top of the distributor housing after the shaft is removed. You may have to modify your firewall to clear the HEI's larger cap. Be sure to move the connector around while you resistance test, as the pickup coil wires can break right at the terminal in the connector, and make intermittent contact, depending on where the vacuum advance moves the pickup in its. HOW TO : GM HEI Distributor Pick-up coil troubleshooting - Duration: 1:32. This happens when the ignition coil or module becomes too hot. How to Install a Distributor. I ran into two problems along the way: The OEM coil location on a slant is tight and the bracket I made for the HEI coil interfered with the fuel pump. It does this when a small magnet on the flywheel passes the trigger. The magnetic pick-up assembly contains a permanent magnet, a pole piece with internal teeth, and a pick-up coil (not to be confused with the ignition coil). I removed the cap and the dust shield and rotor I took the 2 screws holding the pic-up coil in place after that I pulled up easy and the pick up coil moves a little. They run between the distributor and spark plugs. Advance Adapter. ) Some later HEI distributors used five terminal modules, the fifth terminal was used to retard timing based on sensors and circuitry external to the distributor. I think the distributor is not grounded properly. I think the wire was breaking down inside it. i think we'll just put the mallory unilite back inunfortunately. Dirt Cheap Electronic Ignition. The system consists of a control module and a magnetic pickup mounted in the distributor. This service was begun in 1977, by myself, David Ray, to meet the needs of those that want to utilize an HEI ignition system, where the size of the large, coil in cap HEI will not fit without severe clearance/interference issues, and/or problems, or, to retain the appearance of a stock point distributor, and, still use a better HEI ignition system. Now you have G and W left to wire on the ignition module. A stock coil can not handle more than 8 volts for extended time. Huh? 8V is max but 12V has no problems??? Three things are necessary for HEI: 1) increased primary voltage 2) suitable coil 3) wider plug gap. The HEI and TFI are basically the same thing but the HEI has the proper input for a magnetic pickup distributor. An HEI coil has very low primary resistance, typically in the range of. Now, to check, there are a single ground wire from the inside of the coil to one of the coil holddown screws, and under the coil, a grounding bar, these have to be in place and CLEAN. I had not planned on removing the distributor just to change the pickup coil, my eye sight not good, blind in one and have very blurred vission other, willl need pictures to see how it is assembled, surely this can be installed without removing distributor, course it would be easier to instatl but then I would have extra trouble restabing and retimimg motor on top it all. was running good and then all of a sudden no spark. HEI pickup coil resistance should be between 400 and 900 ohms, wire to wire, NO resistance, either wire to ground. The fuel injectors also fail to fire, which may lead to car not starting. We offer a variety of Spark Plug Wire Ends for your automotive needs. I also can't bench test the coil/igniter b/c i don't have an extra fully working dizzy right now. By using a pickup coil of proper magnetic polarity, the external magnetic fields will not affect the pickup coil in such a way as to give false turn-on or fire signal to the module. Buy Your Corvette Performance Parts From Ecklers: 50 Yrs Of Corvette Experience. Today I re-tested everything on my HEI system on my 80 monte carlo. ) OR WHITE RED Tach Terminal GREEN GREEN GREEN BLACK BLACK 12V Dash. The magnetic pick up coil, the module and the coil. (High Energy Ignition) system. Advance Adapter. A relay coil is not only an electromagnet but it's also an inductor. From the results you get, you'll be able to pinpoint the problem to the ignition control module or the ignition coil or the pick up coil or completely eliminate these as the cause of the no start condition. Pull coil out and clean contact and rotor bushing. C terminal is a ground wire for your coil, so run a wire from C terminal to the - side of your coil. I also can't bench test the coil/igniter b/c i don't have an extra fully working dizzy right now. If the hot wire checks good then the problem could be with one of the electronic components inside the distributor. One of the first symptoms of a bad ignition pickup is an engine that stalls. You need a good multimeter to test the coil and electronic module. or is held too far from the pickup coil, you won't induce voltage in the pickup coil and the test is in-valid. Check the back of. finally an affordable quality small cap hei for the dodge 383 & 400! 3 year warranty! 1959-1972 big block dodge 383 & 400 new hi-performance black pro series ready-to-run small cap hei distributor, 45,000 volt black coil & black 8mm spark plug wires made in the usa !. (High Energy Ignition) system. I think the wire was breaking down inside it. I ran into two problems along the way: The OEM coil location on a slant is tight and the bracket I made for the HEI coil interfered with the fuel pump. Hello First post. The Hot-Spark module's red wire connects to positive ( + or 15 on Bosch coil). Changing pick-up coil in distributor-Delco HEI? shaft/magnet is demagnetized causing problems. FIRST LINE ITEM. There are three main components in an HEI: the ignition module, the pick-up coil and the integral high-tension coil. Starting in 1972, Chrysler began using a revolutionary new electronic ignition system. HEI Coils and Ignition systems must be powered with +12 volts to work properly. Must be connected. To clear up confusion> I used the old HEI distributor cap solely as a holder for the HEI coil as I was too cheap to buy the new external HEI coil. But the problem with using an ohm value too low is that your HEI module is dissipating more current thus gets hotter. We recommend a slightly higher than stock stall on the converter if an automatic transmission is used. Save on MSD Ignition Coil, GM Ext HEI Coil, Performance 8226 at Advance Auto Parts. You may have to register before you can post: click the register link above to proceed. I have no answer to this dilemmahave run a home-brewed HEI with Toyota gear on my '74 F and it ran great with no problems. In addition to the module, you will find the ignition coil, the pick-up coil, the magnetic pick-up assembly, and the mechanical and vacuum advance units- all nestled tightly under the cap. Then use the it as the crank trigger and use the Holley coil input to drive the stock coil. By Tom Benford. hi fitech won't run on vr+coil. Advance Design Vacuum and mechanical Cap Male/HEI Computer-Controlled Compatible No Cap Color Red with black coil cover. The fuel injectors also fail to fire, which may lead to car not starting. Heating Vats and Tanks by Steam Injections. GM IGNITIONS GM Large Cap HEI Distributors There are three different large cap HEI distributors. Source(s): sbc 350 hei switch pick coil it: https://shortly. 5 amps of current. The pickup coil did not test correct. pick-up coil in distributor. DISTRIBUTOR PICK-UP COIL SHORT & RESISTANCE CHECKS 1. I didn't write them down after i measured them. I removed the cap and the dust shield and rotor I took the 2 screws holding the pic-up coil in place after that I pulled up easy and the pick up coil moves a little. Best Jeep Hemi Engine SWAP shop in California - CARB legal conversions! Contact Jeep Speed Shop now for a free consultation - (707) 338-3154. Connect an ohmmeter to each terminal of the pick-up coil connector or wire and ground (one terminal at a time). 00 for it, made in China, ( $210 for the GM unit ) and it has been in the car since ( about 8,000 miles) with no problems. how do i switch the pick up coil in it? i need to know step by step how to change a pick up coil in my pro form hei. To clear up confusion> I used the old HEI distributor cap solely as a holder for the HEI coil as I was too cheap to buy the new external HEI coil. Any resistance measurement less. The Delco-Remey HEI system consists of the battery, ignition switch, ignition coil, spark plugs, primary and secondary wiring and a special distributor assembly. I replaced the coil and the engine started and ran perfectly, until about an hour of driving when the same thing happened and I realized that I was dealing with not just a defective coil issue. NAPA has the stuff I use, and it comes in a box with 10 packagesand it ain't cheap. The ignition coil is located inside the distributor cap. I put one lead in distributor body and the other on terminal on pickup coil it showed infinite, so that ok. HEI pick-up coil assembly. Coil: Clean it up and look at the clear epoxy for signs of arcing to ground. Very rare to lose a pickup coil. The problem with this is that you will burn out points (if equipped) much faster, since the coil’s current is passing through the points. Could also be the pick up coil--often they fail only intermittently. If your parts guy doesn't know what that is then tell him you need an ignition module for a '78 Camaro with a 350. It can be used with 16 volt batteries and can withstand a momentary 24 volts in case of jump starts. Permalink Printer Friendly. Check the back of. We used 10' of the twisted pair wire for the pickup to HEI module, figuring that if that long wire worked OK, the final solution of 3-4 feet would work as well. This particular HEI has always been real solid and without any play. i think we'll just put the mallory unilite back inunfortunately. Engine cranks but wont start (1990 Jeep Wrangler) tested ignition wire for spark when cranking, no spark. 5 superconductor wires (all checked out fine for Ohms), all brand new equipment. Then I put both multi meter leads on pickup coil terminals it showed infinite again instead of 800-1500ohms. Learn about this problem, why it occurs, and how to fix it. Delve into the fascinating world of BMW. The negative side of the coil will be the wire that goes to the points or electronic ignition module. Summit Racing SUM-850001R - Summit Racing® Blueprinted HEI Distributors - Suggested Parts - SummitRacing. IGNITION SYSTEMS- TESTING A GM DISTRIBUTOR PICK-UP COIL Pickup Coils and Hall Effects Signals GM HEI Distributor Pick-up coil troubleshooting - Duration:. The most common symptom of a faulty ignition coil is when the car runs for a while and the engine dies abruptly. Symptoms of Faulty Ignition Coils. Chevrolet Malibu Ignition Module or Coil May Fail Causing Engine Misfire - 152 reports. When a coil failure occurs, the coil's voltage output drops, and the engine may not start or may misfire badly when under load. The pickup seems to be my. Retuned shocks soak up the little jounces of the Arizona pavement with ease and a better-located sway bar helps keep body roll in check. HEI pick up coil problems. Physical Installation. Note that installing an HEI distributor and installing a Pertronix conversion in a points distributor are two completely different animals; if you're installing an HEI distributor (large cap, integral coil), you MUST supply a full 12 volts to the "BAT" terminal on the cap, which requires running a 12-ga. Excess heat dissipation in the HEI module, which occurs during current-limit mode, is minimal. HEI caps have the coil built into them , an all in one ignition as compared to a external cylindrical coil. ) Some (4, 6 CYL. My dad built his own HEI distributor for the FE engine that he built for his pickup about 10 years ago. So I went to the track with the new engine combo, but the ignition is not up to par at all. In fact, all the aftermarket ignition companies sell matched coil and module sets to ensure optimal ignition operation. The connector should be identical to the GM module you're now using. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. is a manufacturer of bimetal thermometers. Step 1 make sure B+ to the coil as mentioned during crank Step 2 make sure distributor is rotating If you have a DVOM and a test light you can pinpoint what the problem is. Advance Design Vacuum and mechanical Cap Male/HEI Computer-Controlled Compatible No Cap Color Red with black coil cover. The upgrade is said to be better than the HEI. Got it back together she would crank but if you turned her off after warm she wouldn't start again. I have now put in 8! I pull the module out and test it: Yep, cooked. ~ Pick-up coil continuity is tested by connecting the ohmmeter (on low range). His engine has the Performer intake and he had to do some very slight grinding on a boss that's at the front of the intake but that was all. either the distributor cap is a huge hurken thing (HEI) or it has an external coil somewhere or the cap has a ninth distributor hole in the middle of the cap to put a coil. When power is applied to the coil the current in the coil builds up and levels off at its rated current (depends on the DC resistance of the coil, I = V/R). 0 in it and a HEI ignition and Vacuum advance. DESCRIPTION Product Feature: Direct fit for GM application utilizing the 4-pin ignition module(1974—1985) Full CNC machined aluminum body. How do I hook up my tachometer? Standard Ignition Coil If you have a standard ignition coil you can use the negative terminal of the coil for the signal source. End of story: The HEI coil keeps my car running. 2 wires from each inductive pickup to each HEI and 2 wires from each HEI to each GM coil. Delve into the fascinating world of BMW. Guaranteed lowest price!. They may have a vacuum advance or a centrifugal advance. CHEVY V-8 SBC AND BBC MSD HEI DISTRIBUTOR. spark at the coil wire - No Spark. Take the cap off, unplug the wires going to the distributor, remove the rotor and the pickup coil is under the rotor and held. bought a new one, put it in, and still no spark. GM IGNITIONS Wiring an HEI 4-pin Module (Magnetic Pickup Trigger). note: the pertronix ignitor is effectively a "go" or "no" system. still no spark. He built it using an Oldsmobile HEI which turned the correct direction. Best Jeep Hemi Engine SWAP shop in California - CARB legal conversions! Contact Jeep Speed Shop now for a free consultation - (707) 338-3154. I replaced the coil and the engine started and ran perfectly, until about an hour of driving when the same thing happened and I realized that I was dealing with not just a defective coil issue. They are engineered & manufactured by Edelbrock featuring Eaton® rotors. (has run twice tho) comes up with p0335 rpm noise. As the ignition pickup essentially functions as the activation switch for the entire ignition system, when it fails , it can greatly affect the operation of the vehicle. I decided to buy a n HEI from Summit. The adapter material is 356 T-6 heat treated aluminum alloy. HEI is grounded to heatsink, and heatsink is grounded to the frame. Ford F-250 Pickup Ignition Coil Your Ford F-250 Pickup will be happy to know that the search for the right Ignition Coil products you've been looking for is over! Advance Auto Parts has 12 different Ignition Coil for your vehicle, ready for shipping or in-store pick up. Coils seldom fail, but when they do they can't provide voltage to the spark plug(s). i have problem with pickup coil going bad on 85 chevy van c20 5. When fitting new contact-breaker points in the distributor, the normal way of checking the gap between them is with a feeler gauge. NAPA has the stuff I use, and it comes in a box with 10 packagesand it ain't cheap. painlessperformance. finally an affordable quality small cap hei for the dodge 383 & 400! 3 year warranty! 1959-1972 big block dodge 383 & 400 new hi-performance black pro series ready-to-run small cap hei distributor, 45,000 volt black coil & black 8mm spark plug wires made in the usa !. The ignition coil on your Dodge Ram Pick Up, Ram Van, Dakota with the 3. A few years ago, I converted an older street bike to a GM HEI ignition. The negative side of the coil will be the wire that goes to the points or electronic ignition module. Apparently the pickup coil starts shutting the module down once it gets hot if its bad/old. This setup with a MSD blaster coil can work to 7500 rpm on a six cylinder engine. Source(s): sbc 350 hei switch pick coil it: https://shortly. The engine may suddenly just shut off, almost as if the key had been turned off. The coil can be check with a. engine won’t run. Best Answer: GM HEI systems are pretty bulletproof, their weak points were the pickup coil wires breaking from flexing from the vacuum advance and the rotors sometimes get hole burned in them from all the spark the HEI makes. note: the pertronix ignitor is effectively a "go" or "no" system. It's necessary to remove the distributor drive gear and the distributor shaft to replace the pickup- - - -it's held on by a VERY thin snap ring at the top of the distributor housing after the shaft is removed. CHEVY V-8 SBC AND BBC MSD HEI DISTRIBUTOR. The pick-up coil assembly is held on the distributor with a thin snap ring covered by a fiber washer. The ohmmeter should indicate one steady value within the 500 to 1500 ohm range as the wires are flexed. I had replaced the coil, the old one was ohm'ing high and my backfire came back. Ignition Installation Troubleshooting Tips/Frequently-Asked Questions Warning: Reversing the red and black ignition wires will destroy the ignition module and void the warranty. Pro-Comp is by far, the bottom of the barrel HEI, NOT Pro-Form. Re: Bad coils delco hei voyager ignition Two common problems with the HEI ignition systems is module failure and cross fire. When C first opens, the ignition coil produces a spark. There were a number of different kinds of General Motors HEI modules: 4 pin module - electronic ignition, but doesn't do computer timing control, top left; 7 pin module (large) - electronic module that does timing control, used with coil-in-cap distributors, top right. Step 1 make sure B+ to the coil as mentioned during crank Step 2 make sure distributor is rotating If you have a DVOM and a test light you can pinpoint what the problem is. The pickup coil should develop approximately 1/2 volt at cranking speed. Another unique feature of HEI is a dwell period that responds to changes in engine speed. Replacing the ignition coils can be done by any regular DIYer. Moreover, the HEI module’s expanding dwell function meant that up to about 3,000 rpm, the coil’s saturation time. The issue stems from failure of the housing that in turn allows the distributor shaft bushing to wear out. Buy online, pick up in-store in 30 minutes. HEI caps have the coil built into them , an all in one ignition as compared to a external cylindrical coil. In this coil, the electricity has a voltage high enough that it creates a spark in the spark plug, and this ignites the fuel and air combination. Finally found EXACTLY what my symptoms are. Chevy CK Pickup 1998, HEI Super Coil Kit by Accel®. Together with the spark timing signal [pin E], Ref (tach) [pin R], and crank override [pin B], there are 7 pins in total ). How do I hook up my tachometer? Standard Ignition Coil If you have a standard ignition coil you can use the negative terminal of the coil for the signal source. GM IGNITIONS GM Large Cap HEI Distributors There are three different large cap HEI distributors. In the HEI system, as in other electronic ignition systems, the breaker points have been replaced with an electronic switch-a transistor-which is located within the control module.