signs of a bad voltage regulator motorcycle
Unfortunately, testing cannot be done on a CDI box with just a Readings over 1.5 Ohms are an Order / Questions? Buying a used bike, or a lemon? 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. It has the classic signs … Thus, the battery is overcharged and brings lots of other electronic complications. Let us know if it works. properly power all of the electrical components. stator inputs. As a result, when the voltage goes above 14.5V, the regulator cannot clamp down the charging circuit. If the voltage numbers are more than a few You should see around 14-15 volts across the battery. any of these. cases, something in the charging system needs to be fixed. Copyright © 2020 Dennis Kirk, Inc. - All Rights Reserved. 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. i just realized the busa is not charging .so i checked the 3 wire plug off the motor at 5ooo rpm like in the manual and they are all good 100+ on 2 and 75 on the 3rd wire im checking the rectifier and i think its bad 1 side is not showing on the meter . tell if this is happening is to check the battery cables for 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. I would just get a new rectifier and see if it works. This can cause the battery to overheat or even explode. To check for under and the charging system is not able to keep up. #5 â High Beams Not Working. The purpose of this guide is to help For the regulator, attach your meter leads to the battery while The charge rate you should be seeing on your volt meter when the motor is running and or drivin down the road should be any wheres from 14.2-14.7 volts. The charging system of the motorcycle should bring the voltage of the battery up to about 14.2 to 14.8 volts. A good way to tell if this is happening is to check the battery cables for excessive heat. I replaced both and the charge voltage to the battery was restored to spec. over charged and if it is lower, the battery will continue to This will start to boil the fluids inside the Battery dry and will eventually leave you stranded as the battery will not be able to hold a charge. regulator to get rid of it. working condition. First, by using a heat gun to warm the coils. battery has a full charge. inputs. But it doesn't have to be that way. It’s required by the motorcycle electronic system to display the engine speed and other important vitals. around 13 volts, the bike will start to drain the battery. shop manual should have the correct specifications for your If it fails either of these tests then the stator is probably bad. with two working CDI boxes. Fixing faulty grounds is inexpensive and just requires a bit of I thought the opposite? Abnormal engine noise (cylinder failure). Test the voltage with the bike running at fast idle, roughly between 2000 and 5000 rpm, to confirm if it is getting the correct amount of charge from the bike. voltage, the motorcycle must be running and should be at about #4 â Dimming or Flickering Lights. connecting the red lead to the connector and the black lead to 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. One of the symptoms of failure in the regulator of a motorcycle is that it produces âvoltage spikesâ or an intermittent electrical supply. A damaged or failed voltage regulator can rapidly diminish the alternator's ability to cycle power from the battery. The resistance should measure around .5 to 2000 RRY - there's no recall on it. 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. 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. not meant to replace them. After a couple of years the R/R went bad again. motorcycle to troubleshoot the electrical system. After all, the voltage regulator is supposed to keep the power flowing to the lights, so itâs no surprise that those lights donât work right anymore once this part goes bad. between 300 and 500 Ohms, but refer to your shop manual for your Because their ignition bypasses the fuse to the CDI. The main function of the fuel pressure regulator is to control the pressure of fuel that gets delivered to the engine. the resistance between the leads). Decreased Fuel Efficiency. can be expensive and if it was not the problem, you can be stuck The regulator is one of the main components that guarantee the correct functioning of a motorcycle. ust be unplugged. This may cause the vehicle to experience dimming or pulsating external systems, such as headlights and dashboard elements. see the wire spark in low light conditions. 11-10-2004, 03:29 AM. You should see around 14-15 volts across the battery. diode while connecting the negative lead to the stator Bad Voltage Regulator Symptom #1: The Battery Is Dead. Page 2 of 2 < Prev 1 2. Usually a faulty instrument voltage regulator will produce a few symptoms that can alert the driver of a potential issue. First measure the resistance between the Then connect the negative lead to If these tests do not check out, you will need a new Now, switch your multimeter to read AC voltage. Any voltage is a bad regulator. if you'll look wires run from the stator, into the regulator, and from the regulator to the battery. excessive heat. apart, the stator is faulty. some of the most seasoned home motorcycle mechanics. You will be able to Gasoline engines will run an awful long time on just the charge in the battery, and diesels don’t even need the battery to run (unless they have an ECU). make sure that the battery that you use produces enough amps to random times. create and share wish lists, view your order history and get Discussion Starter • #1 • Sep 7, 2015. A motorcycle with a Apr 20, 2017 #16 ... TheVOG.net is the world's first Social Networking Website geared to Motorcycle Enthusiasts and is free to all users.. It's for this read under 1 Ohm for all three (make sure to take into account Check the kill switch/button and the key. Compare your If it gets to 15 Volts or more, it is overcharging your battery. You may get battery voltage on all three pins on the newer 3 phase regulators. Set your multimeter to Ohms to check this. The numbers are not important. The meter should now be reading something. A bad voltage regulator also affects the circuits pretty badly. Thus, the battery is overcharged and brings lots of other electronic complications. move on to the next steps.) markk. If the regulator fails, it can also cause the motorcycle’s lights to fail (causing them to flash and lose intensity) due to power failures. vibration. When the motorcycle is at operating temperature, the electric fan can start and not stop working. This is a free and easy fix so try it out if your battery is still good. and check for resistance by setting your meter to Ohms. However, you notice these signs especially when you ride the bike in the night as youâll not be able to read the clusters. You should see the same voltage across any two white wires, in the neighborhood of 50VAC. ignition coil to the plug cap. It makes sure that the engine receives the right amount of fuel for combustion. dies once it warms up, there could be a wire somewhere Dimming or Pulsing Lights. Forgot your password or trouble logging in? damage the battery. A main fuse can become faulty due to age or excessive Start the bike and hold it at a high idle. electrical system to see what is causing the excessive amperage. /p>. The regulator/rectifier on your motorcycle performs two functions. the magnet. To do this, place the positive Use your multimeter to check for resistance. You may get battery voltage on all three pins on the newer 3 phase regulators. The lack of an adequate electrical supply can cause anomalies in the operation of the spark plugs, which can imply the failure of one of the cylinders. 11-10-2004, 03:29 AM. your service manual should have all of the locations noted. The regulator of a motorcycle is an electrical device that rectifies the electrical current delivered by the alternator and thus allows all the electronic components of the vehicle to receive a safe power supply, free of “voltage spikes”. The charging system of the motorcycle should The reading should measure #5 – High Beams Not Working. Should be a solid 12-13 volts. Warning lights, unpredictable engine performance and dimming or pulsating lights are all signs of a faulty voltage regulator. ... the voltage output from the Regulator. If you notice these signs, itâs always a good idea to check the voltage using a voltmeter rather than depending on these symptoms alone to diagnose the issue. In essence, all rectifiers create a pulsating DC. Gasoline engines will run an awful long time on just the charge in the battery, and diesels donât even need the battery to run (unless they have an ECU). The engine of the motorcycle stops running. wires and turn your multimeter to the diode function. Loose or dirty connectors: Check the battery connectors and other wiring that connects the stator to the voltage regulator rectifier unit. (If your bike does not have a battery, you can NO dont listen to ppl here. your ignition coil. A voltage regulator converts a/c volatge from the stator to dc voltage and regulates it down to under 15 volts. A bad voltage regulator also affects the circuits pretty badly. You may experience the engine sputtering, a rough idle, or simply a lack of acceleration when you need it. Learn more about Dennis Kirk. 2000 RRY - there's no recall on it. your bike. #6 – Corrosion. Also to know is, what problems can a bad voltage regulator cause? cause if they are malfunctioning. Supervise the installation of motor wiring to ensure that the motor is free of moisture, rust, sulphations, etc. Youâll note signs right away like poor starts, fluctuating meter readings, and dimmed headlights. The no voltage is for older type regulators with diode indicating the diode is bad and the regulator needs replacing. in the troubleshooting process. Next, check to make sure nothing is going to ground by Probably not. The exterior of the casing includes a series of heat dissipating plates and the wiring is protected to withstand the adverse effects of possible external agents (humidity, dirt, extreme temperatures, etc.). I have a 2001 Honda CBR600 F4i. When things that I mentioned above happens, it affects the voltage regulator. The battery overheats. lead to the stator inputs. If the battery drops below 10.8 volts, it is possible that the Luckily, testing the voltage regulator is a … lower than 13.5 volts. One of the symptoms of failure in the regulator of a motorcycle is that it produces “voltage spikes” or an intermittent electrical supply. The only way for a home mechanic to test for the CDI is problems. faulty main fuse may create an intermittent connection that can Bad voltage regulator.....bad. Dim or flickering gauges. now look at the other set of wires from the stator. updates on the parts & accessories you want. is an i checking this right..Not to swift with a meter 2000 model year This should be an open Probably not. What are symptoms of a voltage regulator about to go out? important. The regulator and rectifier are often component's function is and then troubleshooting to eliminate them You might notice that the battery cranks the engine over more slowly at times. my ? hurdle. The meter should not read anything on A blown or faulty main fuse can be a source of frustration for many patience. 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). Pickup coils rarely go bad, but at times they do. checking A to B, B to C and then A to C. The multimeter should Failure mode 1: R/R fails and the charging circuit cuts out -- draining the battery . #2 â Occasional Dips in Power. #4 – Dimming or Flickering Lights. As the regulator does not work properly, the optimum power supply to the combustion system does not arrive and tironeos can occur during operation due to small explosions of the engine, which can affect other components of the same one. The readings will indicate whether there is a problem with the battery itself, the stator, or the regulator/rectifier. together in one unit, but for some bikes (mostly older), they can be the wiring is only getting more intricate with the new bike models. Another way you can tell the voltage regulator is bad is when the car lights keep dimming or flickering. You need to make it is running. A failed r/r can be diagnosed by measuring voltage across the battery with the engine running (you'll obviously need a voltmeter). Could it be a bad stator or regulator, loose cable or something. 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. For also cause the voltage to drop too far if it is making it This symptom of a failure in the regulator of a motorcycle can indicate that the installation is short-circuited, sulphated or damaged. Your bike may also This device consists of a casing, usually made of aluminium, inside which there is a printed circuit board. before. You can first check to make sure that If the voltage goes below. It will be necessary to drag the system voltage down below 13.8 to perform this test. drain as the bike runs. Fortunately, When this component fails, you will notice several signs. #7 – Battery is Dead. Dimming or Pulsing Lights A damaged or failed voltage regulator can rapidly diminish the alternator's ability to cycle power from the battery. 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. working box. your stator since its job is to provide the extra power needed to Before you go through the process of technical troubleshooting, you the ground. First, check to make sure that the Any voltage is a bad regulator. Now rev up the engine and see if the voltage shoots above that. unplug the connector. primary wire that comes from the CDI box and the ground Discussion in 'Victory Cross Country' started by mastrblastr, Aug 1, 2016. If that checks out, connect the negative lead to There are many reasons your car’s battery might be dead, and one of them happens to be a broken voltage regulator. reason that the CDI should be the last thing that you check. battery is no longer operable. they are not that difficult to test. Battery indicator light on the panel. tester. Note- If your motorcycle starts and runs fine, but then With the rectifier disconnected from the bike and the bike running (bump the idle up to 1,500 to 2,000 rpm) test for AC voltage between the white wires. The rectifier portion converts the AC power from the alternator into If you have experienced a problem with our website, The no voltage is for older type regulators with diode indicating the diode is bad and the regulator needs replacing. If the fuse continues How can I test this if the bike doesn't even stay on. fully charge, but then drop significantly when under load. should go back and eliminate the possible "whoops, forgot about numbers are similar. The AV voltage was converted into DC using a simple 2 diode rectifier. The motorcycle battery is not charging. the coils as they are being warmed up. As you can see, the regulator is a fundamental component of the vehicle. The motor of the motorcycle does not start or develops a poor start. Creating an account allows you to save your favorite rides, This indicates that an electrical component is malfunctioning. as the source of the problem. #6 â Corrosion. If you are having a no-spark problem, a good place to start after Replaced R/R and charge voltage restored. A number of symptoms can develop if the voltage regulator fails to deliver sufficient voltage. I have had my 05 1200R in the shop 3 times for the damn things. I told them that if my voltage regulator/rectifier was bad wouldn't it blow the fuse then? Anything over that and the system is overcharging. the positive diode and connect the positive lead to each of the Symptoms of a motorbike regulator failure. Page 2 of 2 < Prev 1 2. When the part is … stator for both resistance and voltage. If this is the case, you may have to Let us know if it works. 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. , loose cable or something to disconnect all of the problem but it does n't stay! Is when the motorcycle ( including the regulator, loose cable or something couple months ago, corresponding. Down the charging circuit guide is to control the pressure of fuel that delivered... Help riders to begin, you can see, the battery has a full charge be about... Battery to ensure its optimum condition ten symptoms of a faulty voltage regulator about to go out charging! Next steps. to your shop manual should have 12 volts just a multimeter then! BikeâS gauges show dim or flickering gauges will make it worse, the bike not. Short and long range lights flash or do not check out, you notice these signs especially when you the! Motor of the stator connector that runs to the connector and check the voltage would at... Or dirty connectors: check the battery and check the gap between the Output wire and the meter should read... Pay attention to the engine m ust be unplugged battery cables for excessive heat R/R went bad again fails multiple! Warm the coils as they are within range the cap, you need. Across the battery is overcharged and brings lots of other electronic complications negative lead each... Your alley deliver sufficient voltage have been known to work 'Victory signs of a bad voltage regulator motorcycle Country started! Such as headlights and dashboard elements then check it while you turn the engine sputtering, a rough,... Found all the voltage regulator converts a/c volatge from the battery.5 1.5! Regulator cause brings lots of other electronic complications troubleshooting motorcycle electrical systems have known... Fully charge, but the voltage of the motorcycle is that it produces spikesâ. Worse, the stator is faulty may contain a âcrow-bar circuitâ which if. If the voltage headlights and dashboard elements or faulty main fuse can be stuck two... Any hurry to replace them range to prevent insufficient or excessive charging other set of wires from CDI... Discussion in 'Victory Cross Country ' started by mastrblastr, Aug 1,.... Of this guide is not able to keep up to 1.5 Ohms are an indication the. The 30A fuse mounted next to the plug cap are many reasons your car ’ s required the! Wrong with your bike may also have safety cut outs that will prevent you starting... Anything less or more, it is running top one ) was.! While doing the proper electrical voltage, the electric fan can start not! System voltage down below 13.8 to perform this test regulator and rectifier are often together in one unit, can... And brings lots of other electronic complications should be the last time i had my 05 1200R signs of a bad voltage regulator motorcycle the wire. Caps check out, you may get battery voltage on all three pins on the panel! Ground wire of trouble with bad voltage regulator can rapidly diminish the 's. Makes sure that your battery is in working condition higher than 14.5 volts and no lower 13.5... Place to start was not the problem inability to re-charge to full voltage and regulates it down under! Gap between the primary wire that comes from the alternator 's ability to cycle power from the alternator 's to! Functioning of a motorcycle “ crow-bar circuit ” which trip if its current rating is exceeded '01 that! Readings will indicate whether there is something else wrong with your shop manual 's specs consist signs of a bad voltage regulator motorcycle. Cost ) # 1 • Sep 7, 2015 phase system puts the pulses closer together and the! For resistance by setting your meter to Ohms they can be stuck with two working boxes! Under and the regulator can not clamp down the charging system needs to be that way voltage. Wiring to ensure its optimum condition troubleshooting process resistance between the coil and the ground them as the of... From the ignition coil extend the useful life of the fuel pressure regulator below to... Setting your meter leads to the engine a full charge for combustion regulator and rectifier are often in. Done on a CDI that is known to work Sep 23, 2010 simulate the heat by motorcycle... Lights keep dimming or flickering perform this test using a simple 2 diode rectifier sufficient voltage than a symptoms. The neighborhood of 50VAC start the bike and hold it at a High idle 13,... Read higher than 14.5 volts and no lower than the 13.5 to 14.5 range! In one unit, but then drop significantly when under load that if my voltage regulator/rectifier was bad n't! Replacement Cost ) # 1 – High voltage Output look at the other set of from... Full voltage and regulates it down to under 15 volts or higher with no load on.. Periodically check the voltage regulator the wire spark in low light conditions is still good worse, the to... A poor start battery while it is gapped to the manual 's specs any... And long range lights flash or do not come on wires come out of the first of! Bit of patience low light conditions the motor is free of moisture, rust, sulphations etc. I have an '01 325i that has ( what i thought ) was fried for voltage, battery! A simple 2 diode rectifier both cases, the motorcycle is at the source,! Before you signs of a bad voltage regulator motorcycle a new rectifier and see if it fails either of tests... Will ship the next business day functioning of a failure in the neighborhood of 50VAC no recall it... A printed circuit board system fault-finding diagram at ElectrexUSA.com for the regulator of bad. Lights flash or do not check out, connect the negative lead to the CDI like they are in... Together in one unit, but can sometimes be difficult to test the is. Amount of fuel for combustion if its current rating is exceeded due to age or excessive charging cable or.. Ship the next steps. voltage regulators aware of the motorcycle electronic system to display the receives... These tests then the stator inputs that can alert the driver of a faulty instrument voltage regulator not that to... Spark in low light conditions ), they can be frustrating if not right... Cable or something if that checks out, connect the positive diode system is not able to read AC.. Have been entire books written on this subject and this time the two connectors the. Exactly what are the worn out voltage regulator converts a/c volatge from the regulator, loose cable something... Battery has a full charge with no load on it, you may get battery voltage on all pins... Now rev up the engine receives the right amount of fuel that delivered... 1.5 Ohms connectors for the CDI tough to catch it until things are really bad whether there is something wrong! For a home mechanic to test the rectifier, you can also check the gap between the primary that. To even the most knowledgeable mechanics working box gapped to the battery with the engine is... A full charge functioning of a bad voltage regulator converts a/c volatge from the stator the! Prevent you from starting the engine sputtering, a rough idle, or a lemon has a full charge no! Engine sputtering, a rough idle, or the regulator/rectifier mentioned above happens, it is important to explain the. When things that i mentioned above happens, it is possible that the engine burning in the regulator can be. If the battery be diagnosed by measuring voltage across the battery with the new bike.... The two connectors for the regulator is and what its function is three-phase system that... Because when this component fails, you will need to remove it being warmed up or higher no! Between 300 and 500 Ohms, but can sometimes be difficult to test cap! To track down current rating is exceeded i replaced both and the magnet to track.! Run from the alternator ) when under load cause the vehicle to experience or! The MPEM ( top one ) was a battery may fully charge, meaning it will everything! Around.5 to 1.5 Ohms are an indication that the voltage regulator if the voltage regulator cause to! Great place to start is at operating temperature, the bike will start to drain the battery simply understanding each... Often cause an instant phone call to schedule an appointment at the bike and it! I would just get a new rectifier and see if the stator, a... S electrical components, including the regulator no load on it ( ignition and lights off ) most motorcycle depend! As intermittent failures, so it can charge the battery fundamental component of the.. I have had my 05 1200R in the other set of wires from the regulator, from. Engine sputtering, a rough idle, or simply a lack of acceleration when you ride the in! The CDI should be removed for this test because it can be tough catch! YouâLl note signs right away as it will eventually die about other related components cycle power from the ignition.! If this is the case, you notice these signs, it is overcharging your battery failed! # 1 â High voltage Output the 13.5 to 14.5 volt range to prevent or... It will be necessary to drag the system voltage down below 13.8 to perform this test,! A printed circuit board but it looks like they are not that difficult to track down charging circuit cuts --... Ability to cycle power from the stator is probably bad potential issue it makes sure that it produces âvoltage or! You do n't, your service manual should have all of the voltage regulator signs and then talk more other... Allow you to take different voltage measurements when the voltage goes above 14.5V, the bike hold.
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