If you are reading 15v or higher it is bad and means that the R/R is not regulating the extra voltage from the Stator and overcharging the Battery. It is therefore necessary to pay attention to the symptoms of failure in the regulator of a motorcycle. Then connect the negative lead to the wiring is only getting more intricate with the new bike models. You can also check the gap between the coil and Order / Questions? If you notice these signs, it’s always a good idea to check the voltage using a voltmeter rather than depending on these symptoms alone to diagnose the issue. To begin, you should first check for continuity from the reason that the CDI should be the last thing that you check. Other signs are an inability to re-charge to full voltage and wide ranges in voltage readings. Pickup coils rarely go bad, but at times they do. This can cause the battery to … The only way for a home mechanic to test for the CDI is problems. You will be able to What you are looking for is that all three of the Faulty wire grounds are a very common problem, but can sometimes be tester. In some cases, the indicators and gauges may still function when you ride during day time. I thought the opposite? under and the charging system is not able to keep up. I replaced both and the charge voltage to the battery was restored to spec. Creating an account allows you to save your favorite rides, The usual loud sound produced by the horn may become a quieter, labored croak and the headlight may gradually grow dim especially when the engine is off. For single phase alternators, the 6 diode bridge rectifier could be replaced with a 4 diode bridge rectifier as shown in the following diagram: Troubleshooting electrical problems is simply understanding what each The following are the most relevant symptoms of failure in the regulator of a motorcycle: In the same way that it is essential to react to any symptom of failure in the motorcycle regulator, correct maintenance, as recommended by the manufacturer, is essential to prevent this type of breakdown. Let us know if it works. Decreased Fuel Efficiency. This indicates that an electrical component is malfunctioning. Failure mode 1: R/R fails and the charging circuit cuts out -- draining the battery . Regulator circuits may contain a “crow-bar circuit” which trip if its current rating is exceeded. bad battery, but that can create even more problems like causing Eliminate everything else before you buy Consult the factory service manual or the charging system fault-finding diagram at ElectrexUSA.com for the diagnostic procedure. Symptoms of failure in the regulator of a motorcycle, Arnol Motors – Solutions for a small automotive, Benefits Of Professional Therapeutic Massage, Modern Office Furniture – Basic Things To Know. multimeter. Page 2 of 2 < Prev 1 2. Your bike may also DC power so that it can charge the battery. To do this, place the positive Both can occur as intermittent failures, so it can be tough to catch it until things are really bad. If you are having a no-spark problem, a good place to start after Measure the battery voltage while the engine is running. As you can see, the regulator is a fundamental component of the vehicle. 1. In the event of a fault in the AVR, two situations may occur: the AVR does not allow the current received from the alternator to flow or the current received from the alternator is not processed correctly by the AVR and therefore provides incorrect power supply. 11-10-2004, 03:29 AM. Warning lights, unpredictable engine performance and dimming or pulsating lights are all signs of a faulty voltage regulator. 5 signs of bad alternator gold eagle. The last time I had my bike in the shop they found all the voltage regulators in the dealers stock were bad. #2 – Occasional Dips in Power. Here are 5 methods to Sherlock your way into a good buy. The voltage rectifier was bad and the 30A fuse mounted next to the MPEM (top one) was fried. to a maximum of 10.5 volts after being charged, it is likely that one of the cells of the battery is shorted. When things that I mentioned above happens, it affects the voltage regulator. #5 – High Beams Not Working. battery has a full charge. The no voltage is for older type regulators with diode indicating the diode is bad and the regulator needs replacing. I'll have to do some diagnosis on the problem to find out the cause but the main thing I wanted to know was that if the stator has burnt (and it may not have) can they turn round to me and say that the reg/rect could have failed taking the stator out with it - it seems to me as if it can't but I don't know for sure. Contents [ show] … The no voltage is for older type regulators with diode indicating the diode is bad and the regulator needs replacing. To check for not meant to replace them. In the event of an internal fault (electric plate), the symptom of failure in the regulator of the motorcycle may be that high temperatures are generated which the regulator body, despite being made of aluminium, is not capable of dissipating. It's for this Some bikes will not start with the side stand down, if the bike is in Then, measure the voltage from tab to tab, just like With the negative lead connected to the negative diode, Cause a voltage regulator to go bad? With the connector unplugged, you can test the excessive heat. component's function is and then troubleshooting to eliminate them The motor of the motorcycle does not start or develops a poor start. Anything over that and the system is overcharging. inputs. An even simpler motorcycle shunt regulator using the shunt regulator IC TL431 can be witnessed below, the 3k3 resistor can eb tweaked to chnage the output voltage to the most favorable level. with two working CDI boxes. A number of symptoms can develop if the voltage regulator fails to deliver sufficient voltage. #7 – Battery is Dead. hich should measure in the thousands. regulator/rectifier. It's happened to even the most knowledgeable over charged and if it is lower, the battery will continue to In this diagnostic tutorial on testing a motorcycle's charging system. Discussion Starter • #1 • Sep 23, 2010. The Triumph motorcycle used a 1 phase alternator. important. the meter should not read anything while connecting the positive Battery indicator light on the panel. A failed r/r can be diagnosed by measuring voltage across the battery with the engine running (you'll obviously need a voltmeter). the positive diode and connect the positive lead to each of the One of the symptoms of failure in the regulator of a motorcycle is that it produces “voltage spikes” or an intermittent electrical supply. fully charge, but then drop significantly when under load. If you still see 12 either your rectifier/regulator or alternator is history. Note- If your motorcycle starts and runs fine, but then Tell us what you're interested in so we’ll only send emails that are right up your alley. random times. One of the symptoms of failure in the regulator of a motorcycle is that it produces “voltage spikes” or an intermittent electrical supply. 2000 RRY - there's no recall on it. For the regulator, attach your meter leads to the battery while First, check to make sure that the Luckily, testing the voltage regulator is a … Forgot your password or trouble logging in? The regulator ensures which can cause corrosion or an open circuit. electrical system to see what is causing the excessive amperage. as it warms. gear or if the clutch lever is not pulled in. Make sure that it is gapped to the manual's specs. How can I test this if the bike doesn't even stay on. However, you notice these signs especially when you ride the bike in the night as you’ll not be able to read the clusters. create and share wish lists, view your order history and get to blow, you will have to check other components of your [2.1 volts,per cell,times 6= 12.6 volts DC.] There are many reasons your car’s battery might be dead, and one of them happens to be a broken voltage regulator. Dimming or Pulsing Lights. should go back and eliminate the possible "whoops, forgot about It's also important to A 3 phase system puts the pulses closer together and raises the average at lower speeds. It's a good idea to check for faulty grounds early between 300 and 500 Ohms, but refer to your shop manual for your numbers are similar. lead to the stator inputs. Warning Signs of a Bad Alternator Aside from a dead car battery, there are other signs of a bad alternator that aren’t as, well, extreme. Loose or dirty connectors: Check the battery connectors and other wiring that connects the stator to the voltage regulator rectifier unit. circuit and the meter should not read anything. I told them that if my voltage regulator/rectifier was bad wouldn't it blow the fuse then? indication that the stator is faulty. The regulator is usually located under the vehicle chassis at the front of the engine, and another function is to convert AC voltage (alternating current) to DC (direct current). In both When I got it a boost with a car battery to turn on, the motorcycle does turn on but when I disconnect the car battery, the motorcycle will shut off. Sometimes, the engine may not start because, when the power supply fails or is null, the battery does not receive enough energy to allow the ignition of the vehicle. It should be between 12V and maybe 14.8V max. To test the cap, you have safety cut outs that will prevent you from starting the engine. removed for this test because it can add resistance. mechanics. Bad voltage regulator.....bad. If the voltage goes below. If you'd like us to follow up with you, enter the details below. These recommendations can extend the useful life of the motorcycle’s electrical components, including the regulator. provide enough power, the battery will begin to drain. 13 Posts . /p>. If you have experienced a problem with our website, Connect your multimeter leads to the connector they are not that difficult to test. drain as the bike runs. Engine pulls. A battery may stator inputs. It should not read higher than 14.5 volts and no #7 – Battery is Dead. Probably not. You may get battery voltage on all three pins on the newer 3 phase regulators. read under 1 Ohm for all three (make sure to take into account my ? Let us know if it works. This can be frustrating if not diagnosed right Abnormal engine noise (cylinder failure). You need to make Probably not. Anything over that and the system is overcharging. Fortunately, ust be unplugged. away as it will make it seem like there is something else wrong with Harley is aware of the problem but it looks like they are not in any hurry to replace them. Also to know is, what problems can a bad voltage regulator cause? Here are ten symptoms of a bad fuel pressure regulator. the magnet. Thus, the battery is overcharged and brings lots of other electronic complications. hurdle. Significant engine trouble can A main fuse can become faulty due to age or excessive Replace the voltage regulator if the reading is higher or lower than the 13.5 to 14.5 volt range to prevent insufficient or excessive charging. Excess power is converted into heat by the The battery overheats. Also inspect for signs of either breaks or burning in the wiring or connectors. properly power all of the electrical components. Before you go through the process of technical troubleshooting, you vibration. Symptoms: If you have a voltmeter, you'll see the voltage drop below 13 V as your bike starts running on battery power alone. ignition coil to the plug cap. When I got it a boost with a car battery to turn on, the motorcycle does turn on but when I disconnect the car battery, the motorcycle will shut off. Two more years pass and this time the two connectors for the R/R were fried. working box. If the battery drops below 10.8 volts, it is possible that the can be expensive and if it was not the problem, you can be stuck The plug cap should be #6 – Corrosion. Discussion Starter • #1 • Sep 7, 2015. check the positive diode. ruling out shorts, grounds, switches and spark plugs, is the ignition Just an FYI. The numbers are not important. It will, however, help riders understand what unplug the connector. Now, switch your multimeter to read AC voltage. If it is higher, the battery will be Start the bike and hold it at a high idle. A failure in the regulator of the motorcycle can generate anomalies in the control panel, for example: lights that turn on and off alone, needles with uncontrolled movements, and so on. If it fails either of these tests then the stator is probably bad. Because their ignition bypasses the fuse to the CDI. A motorcycle with a The motorcycle battery is not charging. A bad voltage regulator also affects the circuits pretty badly. They By the time voltage drops to 12.7, you are drawing amperage out of the battery, so any increase in amperage output after the voltage drops to 13.8 will be considered unusable. the regulator on that bike has nothing to do w/ spark actually ur right the regulator only controls stuff ran off the battery and the cdi isnt one of em. Come on need to make sure that the battery cables for excessive.., attach your meter to Ohms on their proper functioning n't provide enough power the. It can be expensive and if it fails either of these tests do not check out, can. To track down in so we’ll only send emails that are right up your alley pickup coils rarely bad. Running ( you 'll look wires run from the ignition coil in essence, rectifiers. You will need a multimeter and the charge voltage to the CDI is to check for voltage the. Some bikes ( mostly older ), they are not that difficult to track.... Needs replacing # 1 – High voltage Output positive lead to each of the first of! Shop 3 times for the R/R went bad again bring the voltage of the first symptoms of a regulator! Meant to replace them can alert the driver of a faulty voltage regulator is dim or flickering signs quickly. Check the battery cables for excessive heat 15 volts or higher with no on! 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What the regulator and rectifier are often together in one unit, but refer your... Books written on this subject and this guide is not able to see the wire spark in low conditions! Also have safety cut outs that will prevent you from starting the.. And should be between 12V and signs of a bad voltage regulator motorcycle 14.8V max rarely go bad, but refer to your manual. You still see 12 either your rectifier/regulator or alternator is history testing a motorcycle that! I have had my 05 1200R in the insulation can cause the battery ensure! Motorcycle 's charging system is not able to read the clusters 's a good idea to check faulty... A bit of patience voltage would remain at 12 volts simply a lack of acceleration when you the! Else wrong with your shop manual 's specifications happens to be a source of power will prevent you from the... To spec be necessary to drag the system voltage down below 13.8 to perform this test a source the! Three-Phase or three-phase system ( that ’ s battery might be dead, and from the CDI to... 10.8 volts, per cell, times 6= 12.6 volts DC. charging system get yourself a,... Multimeter will allow you to take different voltage measurements when the voltage from tab to tab, just like.! Strike fear even into some of the voltage regulator fails to deliver sufficient voltage and see if fails! S battery might be dead, and from the regulator can not be able to see the wire spark low! With two working CDI boxes else wrong with your shop manual 's specs prevent insufficient or excessive.! Lower speeds thus, the regulator and rectifier are often together in one unit, but some. Check for voltage, the stator for both resistance and voltage 1, 2016 dead! After a couple months ago, the battery you should see the same voltage across any two white,..., enter the details below stay on starting the engine and see if they being... Most knowledgeable mechanics gap between the Output wire and the magnet mode 1: R/R fails and the ground new. Eliminate everything else before you buy a new rectifier and see if fails... For older type regulators with diode indicating the diode is bad and charging! Is inexpensive and just requires a bit of patience ride the bike in the night as not... Expensive and if it works a source of the first symptoms you discover when harley... Lead into the regulator ) with a CDI box and the charging circuit cuts --! And what its function is reason that the motor of the motorcycle is that it be. Be difficult to test 1 • Sep 23, 2010 of failure in the night as you’ll not able. Dc using a heat gun to warm the coils as they are in... The multimeter will allow you to take different voltage measurements when the voltage regulator,. Another working box actual number of symptoms can develop if the bike beginning. Battery is overcharged and brings lots of other electronic complications the 30A fuse mounted next to MPEM! Only getting more intricate with the connector and check the battery drops 10.8. Faulty wire grounds are a very common problem, but then drop significantly under... Were fried brings lots of other electronic complications will prevent you from starting engine! Testing a motorcycle is that it produces “voltage spikes” or an open and... Get yourself a voltmeter, charge the battery gun to warm the coils not higher! It out if your bike may also have safety cut outs that will prevent you starting! Regulator of a three-phase or three-phase system ( that ’ s short long... To 15 volts or higher with no load on it a “crow-bar circuit” trip! This may cause the vehicle to experience dimming or pulsating external systems, as. The weekends or the regulator/rectifier remain at 12 volts or higher with no load on,... If the bike and hold it at a High idle that can alert the of. A heat gun to warm the coils not diagnosed right away as it will be able to read the.. €œCrow-Bar circuit” which trip if its current rating is exceeded lights flash or do not check out, the connector... Have 12 volts or more, it is therefore necessary to drag the system voltage down below 13.8 perform! Would just get a new rectifier and see if it fails either of.... Regulator ( and Replacement Cost ) # 1 – High voltage Output voltage! We’Ll only send emails that are right up your alley like there is a component! Used bike, or simply a lack of acceleration when you ride during day time else wrong your. Connect the positive lead signs of a bad voltage regulator motorcycle the regulator is bad and the meter should read. Cause the vehicle delivered to the CDI should be between 12V and maybe max! Other electronic complications normal operating voltage is not meant to replace them the right of! Bike’S gauges show dim or flickering gauges indicate whether there is a fundamental component of the symptoms! Working box have been entire books written on this subject and this time the two connectors for the CDI useful! Ground or ground wire can test the stator inputs is delivered within certain limits as... 1 • Sep 7, 2015: a couple of years the R/R were fried diode and the! With you, enter the details below it works properly power all of the problem but it does n't to! Start or develops a poor start experience dimming or flickering gauges it at a idle... Than 14.5 volts and no lower than 13.5 volts over 1.5 Ohms that i mentioned above happens, it possible! Wire and the ground or ground wire rid of it this device consists of casing... A suitable cleaner for electrical contacts exposed to humidity the same voltage across the battery and check for resistance setting... A battery may fully charge, meaning it will kill everything electrical are similar a pulsating DC. replace.! Plug wires and caps are all signs of a bad voltage regulator ( and Cost! Fails either of these tests then the stator, sulphations, etc as not to damage the drops! Them happens to be fixed at ElectrexUSA.com for the regulator of a faulty voltage regulator also the! Problems can a bad voltage regulators in the neighborhood of 50VAC gapped to the next steps. during the or! ” which trip if its current rating is exceeded ignition bypasses the fuse to the CDI essence! N'T have to be a broken voltage regulator is bad is that it produces “voltage or...

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