Initially, when it’s open, the inductance is low so the current is high. Its a circuit question on a test im doing for homework. The congestion, apart from making the muffler malfunction, creates several long-term issues. Faulty speed sensor. BAD. The first thing you could do while checking the health of the battery is to turn around the connector a couple of times. Over time, that heat can cause the resistor to fail naturally. Ballast Resistor Guide - The electrical system is one of the more complex systems and the more misunderstood, especially by Mopar owners. Faulty solenoid. Defective ignition switch. Loose […], link to EZGO Vs Yamaha Golf Carts (The Difference Explained), link to Why EZGO Golf Cart Won’t Move Forward or Reverse. Since you asked you probably are just using a normal resistor, typically good for 0.125 or 0.250 W. So when you make it dissipate so much more it's going to get SCORCHING hot, probably even breaking down eventually. A Yamaha golf cart is a better option over an EZGO golf cart as it is more power-efficient and has lower maintenance costs. This kind of mechanism has been put together to ensure the safety of the driver and others traveling in the vehicle. To correct this problem, remove the muffler and heat the inside. Loose or corroded cable connections or a faulty controller can also cause the golf cart to not move. The reason that a resistor gets too hot is that you are putting more power into it than it can dissipate at a reasonable temperature. Although the resistance of a conductor changes with the size of the conductor (e.g. The golf cart will not move even if one of them is damaged. The load resistor is built to dissipate the heat caused by holding back the power and aluminum transfers heat to the air around it very readily. The speed sensor plays an important role in keeping a healthy control over the multiple motor functions. This will help in burning up the unburnt oil and all the undesired material that is stuck inside it. In that case, you will have to get them replaced. It's actually unlikely your resistor would explode if it's rated too low, but it probably won't last very long, and will burn through due to overheating. The information on this website has not been verified for accuracy and should only be used for general information purposes only. I have yet to get the 4x 270 ohm 1/4 watt resistors and try those. Use this information at your own risk. If the wires, just like the batteries, are too old, they might have got damaged due to wear and tear. When fan speed is changed via the knob on the instrument cluster, the blower motor resistor changes setting, which changes the speed of the blower motor. Help me solve this sudden new problem. The author(s) and owner of of golfstorageguide.com are NOT trained electricians, mechanics or technicians. My name is Ernie Lo and I'm an avid golf fan! If the car is moving at a speed slower than this, then there might be a few things you need to look into. Congested Muffler. B.T.W How much is too much heat? Why Club Car Jerks and Shakes When Taking Off? The only reason a DC relay would overheat is that it’s being run above its rated voltage. The solenoid resistor on a Club Car golf cart can get hot because of a faulty speed sensor, faulty solenoid or by using batteries that are too old. A EZGO golf cart may not go forward or reverse because of a  malfunctioning microswitch, solenoid, or ignition switch. If the cart happens to be gas-powered, the engine will not start. Find out whether the club car can move at a speed of at least 12 mph. Old CB radio with tubes, Any Tx causes Rx freq drift up and down. If you choose a smaller wattage resistor, but still the same ohm resistance, you will be overloading the resistor, and it will likely overheat and fail. Once you have done this, the muffler will get unblocked and start functioning normally again. If the connections leading to the solenoid are not joined properly or have a faulty connection, the solenoid will not function properly. Depends. The batteries are made up of corrosive acid and so it would be very dangerous to check them with bare hands. sigh heat transfer. Resistors will heat up as they slow down the current running through the circuit. Over time , the ballast resistor can be damaged by normal wear and tear, so there are a few things to look for when you suspect a bad or failing ballast resistor … If it is more than 4.6 volts, then you need a different resistor. They don't get hot hot to the point where I have to remove my finger. How Much Does a Club Car Golf Cart Weigh? Nobody can really give a definite answer as to why your resistor (s) are getting hot without your schematics and photos maybe of your appliance and my Crystal ball is away for a polish and service. The webmaster of golfstorageguide.com and the author(s) is not responsible for any loss in damages, financial loss, personal injury, or death. The resistor will still feel "kinda" hot to the touch (because it's doing what resistors do), but substantially less than in our previous example. Explain why the resistors get hot Use ideas about electrons and atoms The answer is only 4 lines, so it isnt that long, help please? If it is powered by electricity, the cart will not move. Why is my Club Car solenoid resistor getting hot? This heat increases the temperature of the material causing faster motion of atoms which will, in turn, more heat with ongoing collisions. While that can be fixed, it is an indicator of the fact that the solenoid is not as efficient as it should be. I have been enjoying golf for 15 years and love sharing my tips and knowledge of the game with everyone. Therefore, when an ignition coil that does not have an internal resistor is installed on a Ferguson tractor, an external resistor must be added to the ignition circuit. A simple answer is because they dissipate power - they have to, because otherwise they wouldn’t be resistors. The reason they get hot is because voltage across the conductive material excites the outer valence electrons of the material, promoting them into higher orbitals and then exchanging electrons from one atom to adjacent atom where they relax to a lower orbital state. Here are a couple of ways to fix a hot club car solenoid coil resistor or speed up a golf cart. A normal club car in good condition is expected to move at a speed ranging from 12 to 15 mph. The resistor gets quite hot, and needs air around it for cooling. After that, try to start the engine again. This is typically nearly all converted to heat, as thats how resistors work. Keep in mind that rating is under ideal conditions, with adequate cooling airflow and/or heatsinks provided. Using Old batteries. But is there an equivalent to the 3x 13 ohm 2 watt resistors, where I can use just one resistor, or is that the best it's going to get? To my understanding I need to wire my doorbell wiring directly to a 8-24V transformer which has a resistor following their specs. Which is better EZGO or Yamaha Golf Cart? When the different components come in contact with each other, the engine continues to provide the starter with power even when it is not required. A 4 ohm 5 watt resistor protecting an LED lamp. Faulty speed sensor Using Old batteries Using weak batteries over a prolonged period can result in long-term issues to the engine of your golf cart. These motor functions are classified as mechanical, electrical and magnetic. I can then run it, but that is when the coil gets cherry hot. Yamaha carts are more economical than EZGO because they have no fuel pumps and filters to refill or replace. EZGO Vs Yamaha Golf Carts (The Difference Explained), Why EZGO Golf Cart Won’t Move Forward or Reverse. Why is my Club Car solenoid resistor getting hot? What causes the physical resistance in a dynamo? It probably is operating normally as they get quite hot, but check the voltage across it. By using the content on this website, you agree to the terms outlined in this disclaimer. Okay, so now that you have your own thread... Every resistor has to dissipate power given by the formula IxIxR or VxV/R regardless of the power rating of the resistor. For my resistor I used this product. What Causes Tendency To Stare At Bright Lights. There could be a situation when the cart, powered by gas, would start but the starter would fail to withdraw after the engine comes to life. Note that lead-acid batteries have an output voltage of 15 volts when being charged, so under those conditions, you need a different value 10 watt resistor. If you built the circuit yourself, the first thing to do is to look for short circuits -- if a lead or pin from a discrete component is sticking out, it may be contacting the case; or you could have a solder blob that is connecting two different pins which aren't supposed to be connected. AC relay? That is what they do. How to Fix a Hot Club Car Solenoid Coil Resistor, Common symptoms exhibited by a bad solenoid, How to Fix a Leaning Golf Cart (EZGO/Yamaha/Club Car), Why a Club Car DS/Precedent Solenoid Clicks but Won’t Move, How to Fix Club Car Turn Signal that’s Not Working. However, as a side effect of reducing current flow, resistors generate heat. Second, regarding 6 volt ignition systems converted to 12 volts. I went ahead and tapped into a junction box which has some 14-2 Wiring - … As the fan speed is one of the most frequently adjusted settings of the air conditioning system, the blower motor resistor is put under constant stress, which can cause it to eventually fail. You should always size a resistors wattage at 2 to 3 times the actual dissipation.. Is this a new design or something that has been working? I assume you are aware that the power dissipated by any resistance is the product of the voltage across the resistance and the current passing through the resistance. I was using Trojan batteries that were around 5 years old. The load resistor is holding back power and the result of holding that power back so it does not get to the LED lights is heat. Hi there. If the engine responds immediately, there is a chance that the terminals of the battery might have been damaged. At times the solenoid produces a click but the engine does not start. The ballast resistor is commonly found in older vehicles, because they did not have the benefit of circuit boards found in most of today’s vehicles. Malfunctioning microswitch. But how hot depends on the current and resistor value, and very important, how much cooling effect is coming … With the setup you have, the resistor dissipates about 2Watts. The energy transfer causes the resistor to get hot. If they are getting very hot to the touch and start to boil or smell then you need to get higher power resistors. It is natural for the golf cart’s muffler to get filled with unburnt oil or sludge. These parts can get damaged easily because of various factors like high temperature in the engine. Some power resistors are designed to run hot if necessary - or rather to safely dissipate a certain amount of power, depending upon the various physical conditions and requirements of their operating environment. Also, remember to switch OFF the engine of the cart before checking the batteries. For the engine to start, the gear of a golf cart must be in the Park position. When your car runs at a speed slower than 8 or 7 mph, you should know that it has a problem that needs to be addressed. One of the most common signs of a solenoid malfunctioning is the absence of a click when you operate the accelerator. For my transformer I used this product. If the wiring is loose, a technician can fix it quickly. . Resistors are designed/manufactured in certain resistance values and power dissipation values. If space is a real issue and you aren't as concerned about getting maximum brightness output of an LED for a particular application, the second alternative is to increase the resistance value. It is imperative to check the pack voltage that is present at the two posts surrounding the solenoid. An issue with the ignition is one of the most likely things that prevent the engine from starting. yes they do get really warm after just a few minutes of running one,but that’s normal,that’s why they are made of porcelain so they can resist high temperature,s it wont hurt it none though,good luck. Depending on the problem, there are multiple ways to fix a hot club car solenoid coil resistor. So you can go find a $9.1k\Omega$ resistor rated for 1.5W or more of power dissipation. A bad solenoid could be one of the possible reasons behind a golf cart not starting. Ernie loves documenting interesting facts about golf. How Temperature Changes Resistance. Sir WBahn sorry for that, by the way thanks a lot. The solenoid in a golf cart is designed like a relay whose main function is to shield the sensitive components like buttons and switches. For a better experience, please enable JavaScript in your browser before proceeding. Shift the gear to the Park position and the engine will come to life without any difficulty. If the solenoid heats up too much, the vehicle will not move. more power! I just replaced the 36 v solenoid. by any means, typically the power rating of the resistor is the maximum amount of power it can dissipate, and the majority of resisitors are 1/4 or 1/2 watt. I'd help you but it is too early for me to get into Re and Nu numbers and such bullshit. They do make power resistors, google it. Old batteries tend to lose out on energy comparatively fast. The circuit is drawing too much current. thicker wires have less resistance to current flow than thinner wires), the resistance of a conductor also changes with changing temperature. The speed sensor can also malfunction when the magnet inside the golf cart is damaged. Yes, it is normal for the resistor to get very hot. I have to respectfully disagree that a ballast resistor has anything to do with it. The wattage rating of a resistor is the maximum power the resistor is rated to dissipate, before possibly overheating or failing. JavaScript is disabled. The main function of a speed sensor is to read the rpm of the motor. When you are charging the batteries, keep an eye on how fast they are charging and whether the cord is heating up during the charging process. A 6-volt coil gets just as hot as a 12 volt. When the flow is through a … A failed blower motor resistor can cause issues with the … The resistor coil is getting red hot causing a smell in my 1985 EZGO Marathon. That is why it is called a (toaster) , it is encased in the metal box to keep it contained, when the speeds are increased on the foot control, the resistor changes coils, and the only time the resistor is not used is in the high speed. This could be as a result of damaged or burnt connections. This data or information travels to the speed controller. The switches of Yamaha […], Why won’t my EZGO golf cart go forward or reverse? Pay attention to the wattage rating on the resistor when designing the circuit that it will be a part of. If the gear or the transmission is in a neutral position, the vehicle will not move. Here is the most basic way to check whether the new batteries are efficient. Resistors get warm but they shouldn't get hot. Without more specifics, that's about as good an answer as you can hope for. The solenoid resistor on a Club Car golf cart can get hot because of a faulty speed sensor, faulty solenoid or by using batteries that are too old. I have been involved with antique Harley Davidson motorcycles for years and they use a 6-volt, wasted spark system (1 coil, 1 lead for each cylinder). You must identify the issue accurately and then work towards solving it. Doing so is dangerous and could result in serious bodily harm. You must log in or register to reply here. Most "off-the-shelf" resistors are rated for 1/4 or 1/8 Watt. A resistor of a lower wattage would burn out, higher wattages will work but are more bulky. What causes a blower motor resistor to fail By it’s very nature, resistors resist the flow of electricity, much like a flow restrictor in a pipe. When the solenoid does not click, there could be a wiring connectivity issue. A speed sensor is usually found at the rear end of the golf cart motor. I am noticing that when I turn the key on in gear I hear a click and the cart slightly lunges. An AC relay, on the other hand, draws a variable current. and all of you guys thanks! So yes, the resistor does heat up. (The ignition coil resistor on the 9N/2N is located on the back of the dash above the ammeter.) thanks a lot guys for your genuine help and ideas. If you suspect a problem with the batteries, make sure that you wear gloves made of thick clothing material before you check them out. 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