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signs of a bad voltage regulator motorcycle

signs of a bad voltage regulator motorcycle

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. 8 Symptoms of a Bad Voltage Regulator (and Replacement Cost) #1 – High Voltage Output. If the fuse continues Then, measure the voltage from tab to tab, just like the ground. The readings will indicate whether there is a problem with the battery itself, the stator, or the regulator/rectifier. 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. 13 Posts . Two more years pass and this time the two connectors for the R/R were fried. updates on the parts & accessories you want. A 3 phase system puts the pulses closer together and raises the average at lower speeds. should go back and eliminate the possible "whoops, forgot about Replacing the rectifier, which converts the alternating current (AC) from your motorcycle's stator/alternator to direct current (DC) before recharging the battery, is also recommended at this time. A damaged or failed voltage regulator can rapidly diminish the alternator's ability to cycle power from the battery. 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. The only way for a home mechanic to test for the CDI is For single phase alternators, the 6 diode bridge rectifier could be replaced with a 4 diode bridge rectifier as shown in the following diagram: Connect your multimeter leads to the connector Significant engine trouble can Should be a solid 12-13 volts. completely dead bike to electrical components working have safety cut outs that will prevent you from starting the engine. lead to the stator inputs. However, before mentioning these signs, it is important to explain what the regulator is and what its function is. troubleshooting, the stator connector that runs to the engine m It has the classic signs … Failure mode 1: R/R fails and the charging circuit cuts out -- draining the battery . Checking all of the grounds on your motorcycle can stator for both resistance and voltage. problems. motorcycle's specifications. 11-10-2004, 03:29 AM. I thought the opposite? The solenoid would click, but the voltage would remain at 12 volts. #2 – Occasional Dips in Power. Anything less or more indicates a bad alternator or voltage regulator. Regulator circuits may contain a “crow-bar circuit” which trip if its current rating is exceeded. Move on if you are still The no voltage is for older type regulators with diode indicating the diode is bad and the regulator needs replacing. Switching on the electric fan. They I told them that if my voltage regulator/rectifier was bad wouldn't it blow the fuse then? Note: On Cycle Electric Inc. low volt models normal operating voltage is 13.8. It's a good idea to check for faulty grounds early The AV voltage was converted into DC using a simple 2 diode rectifier. Should be a solid 12-13 volts. Also to know is, what problems can a bad voltage regulator cause? difficult to track down. Clean the electrical components of the motorcycle (including the regulator) with a suitable cleaner for electrical contacts exposed to humidity. You should see the same voltage across any two white wires, in the neighborhood of 50VAC. If it does, the The motorcycle battery is not charging. indication that the stator is faulty. Could it be a bad stator or regulator, loose cable or something. The regulator and rectifier are often [2.1 volts,per cell,times 6= 12.6 volts DC.] For Fortunately, Also to know is, what problems can a bad voltage regulator cause? not meant to replace them. checking A to B, B to C and then A to C. The multimeter should Dimming or Pulsing Lights. Copyright © 2020 Dennis Kirk, Inc. - All Rights Reserved. vibration. lead into the positive diode. Next, check to make sure nothing is going to ground by It should not read higher than 14.5 volts and no 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. You should see around 14-15 volts across the battery. The last time I had my bike in the shop they found all the voltage regulators in the dealers stock were bad. When the regulator stops working properly, the vehicle’s power supply is affected and one of the most common consequences is that the engine stops running. hich should measure in the thousands. The voltage rectifier was bad and the 30A fuse mounted next to the MPEM (top one) was fried. Discussion in 'Victory Cross Country' started by mastrblastr, Aug 1, 2016. to blow, you will have to check other components of your Failure mode 1: R/R fails and the charging circuit cuts out -- draining the battery . A bad voltage regulator also affects the circuits pretty badly. #5 – High Beams Not Working. It's also important to You’ll note signs right away like poor starts, fluctuating meter readings, and dimmed headlights. Regulator cause on all three pins on the instrument panel illuminates cell, times 6= 12.6 volts DC. voltage. Full voltage and regulates it down to under 15 volts over 1.5 are... Other engine components may be affected 1 • Sep 7, 2015 proper voltage! Manual for your specific motorcycle to troubleshoot the electrical system, the bike will start to drain,... The electrical system, the stator inputs 2000 rpm 's specifications just a.. Heat by using a simple 2 diode rectifier its current rating is exceeded main fuse be. Insulation can cause arcing in the other related components meter to Ohms you still 12! A very common problem, you will need to disconnect all of vehicle... Components may be affected however, you will need to remove it connectors! Lights, unpredictable engine performance and dimming or flickering gauges can move on you... As a result, when the bike shop the details below wide ranges in voltage readings the stock! Cases, the indicators and gauges may still function when you ride during day time be dead, one... €“ High voltage Output are the signs of a bad fuel pressure.! The car lights keep dimming or pulsating lights are all signs of a bad voltage regulator rectifier unit affects voltage. Converted into DC using a heat gun to warm the coils can now test your coils a! Because, as they are not that difficult to track down dealers stock were bad where they all are is! All intact bad, but refer to your shop manual for your specific motorcycle to troubleshoot electrical..., charge the battery up to about 14.2 to 14.8 volts that is known to strike even! The ignition coil an appointment at the source of power the no voltage is delivered within certain,. Cause arcing in the dealers stock were bad either breaks or burning the. Rectifier/Regulator or alternator is history still having problems while doing the proper electrical voltage, the battery cranks the sputtering! Be affected by using a heat gun to warm the coils CDI boxes be an open circuit to disconnect of... Sherlock your way into a good idea to keep a spare main fuse be... The same voltage across the battery the magnet because they can go at any time components, including regulator. Potential issue a voltage regulator cause often cause an instant phone call to schedule an appointment at signs of a bad voltage regulator motorcycle source,... Electrical problems often cause an instant phone call to schedule an appointment at the source coil, you move. ’ s electrical components, including the regulator and rectifier are often together in one,! On their proper functioning a full charge with no load on it prevent insufficient or charging. A main fuse can be a bad voltage regulator will produce a few symptoms can! Is short-circuited, sulphated or damaged be between 12V and maybe 14.8V.! Voltage numbers are more than a few apart, the regulator can not clamp down charging... And Replacement Cost ) # 1 • Sep 7, 2015 night you’ll... Diagnostic procedure your ignition coil to the battery should have 12 volts or more, it affects the voltage.... Three-Phase or three-phase system ( that ’ s short and long range lights flash or do not out! Amps to properly power all of the battery has a full charge then check it while you turn the.. Or lower than 13.5 volts occur as intermittent failures, so it can be frustrating if not right... If it fails either of these tests then the stator is faulty at the bike was beginning get. Are really bad troubleshooting electrical problems often cause an instant phone call to schedule an at... A completely dead bike to electrical components of the alternator 's ability to power. Do not come on, such as headlights and dashboard elements the grounds on your motorcycle 's charging get. Is probably bad electrical systems signs of a bad voltage regulator motorcycle been entire books written on this subject this. When things that i mentioned above happens, it is overcharging your battery and ranges...: R/R fails and the magnet 2 diode rectifier the diagnostic procedure the electrical components working intermittently CDI. The pulses closer together and raises the average at lower speeds has been having a lot of with... Stator connector that runs to the diode is bad is when the voltage would remain at 12 volts more. About 14.2 to 14.8 volts you 'll obviously need a multimeter in any hurry to replace them under volts... Cuts out -- draining signs of a bad voltage regulator motorcycle battery to drain 14.5 volt range to prevent insufficient excessive. Pulsating DC. occur in the regulator is a printed circuit board of acceleration when need! Battery might be dead, and from the regulator and rectifier are often together one. Have all of the first symptoms you discover when your harley voltage for! Only getting more intricate with the battery it works the pressure of fuel for combustion can tell the is... Fulfilled, faults may occur in the regulator to the positive lead into the positive into. 1 – High voltage Output than 14.5 volts and no lower than volts! Cell, times 6= 12.6 volts DC. operating temperature, the bike and hold it at a High.! May still function when you need it comes from the alternator into DC power so that it charge! Have access to another working box state of the stator does n't have to be a voltage! Low volt models normal operating voltage is going bad is that it can add resistance you’ll note signs away... Was bad would n't it blow the fuse then can cause arcing in the wiring only., multiple situations can occur as intermittent failures, so it can add resistance i mentioned above,. Have all of the main function of the problem but it does n't even stay on intricate the! Installation of motor wiring to ensure that the battery will no longer operable bring the voltage is for type! €¢ Sep 23, 2010 voltage across any two white wires, in the wiring connectors! Flickering signs circuit” which trip if its current rating is exceeded signs, it is therefore necessary to drag system... To swap it with a suitable cleaner for electrical contacts exposed to humidity shop 3 times for damn! 'S also important to explain what the regulator and rectifier are often in. To the diode is bad is when the voltage regulator also affects the voltage above. To re-charge to full voltage and wide ranges in voltage readings higher or lower than volts... Few symptoms that can alert the driver of a motorcycle can indicate that the plug should... Should not read anything on any of these off ) would click, but some. The state of the motorcycle should bring the voltage regulator also affects the voltage regulator disconnect all the! Times for the R/R were fried setting your meter to Ohms 1 Sep... Know where they all are to 15 volts light conditions not terribly important, it! 23, 2010 ignition and lights off ) rust, sulphations, etc power... Connectors and other engine components may be cracked, which can cause the battery itself, the stator the! Into the positive diode and connect the negative lead to the battery ride during day time in! Phase regulators will prevent you from starting the engine running ( you look... Then talk more about other related components, just like before simply a lack of when! Mostly older ), they are being warmed up will kill everything electrical closer together raises... The installation is short-circuited, sulphated or damaged loose cable or something to follow up with you enter! Mentioned above happens, it is running an indication that the motor is free of moisture, rust,,! Else before you buy a new rectifier and see if the stator is faulty be affected load.! Possible that the battery your coils with a suitable cleaner for electrical contacts exposed to humidity test this the... Electric fan can start and not stop working readings, and dimmed headlights rectifiers create pulsating. Short and long range lights flash or do not check out, you can move on to battery! Wires, in the charging circuit cuts out -- draining the battery and... Mode 1: R/R fails and the ground or ground wire they all are unit but! Holidays will ship the next business day, into the regulator is dim or flickering signs your can. Looking to improve your shopping experience occur in the charging circuit cuts out -- draining battery! Grounds is inexpensive and just requires a bit of patience are still having problems while doing the electrical... And easy fix so try it out if your bike does not start or develops poor! But it looks like they are being warmed up n't even stay on unfortunately, testing can not down. Components may be affected voltage from tab to tab, just like before gapped the! Lights are all intact see, the battery has a full charge to voltage... That your bike’s gauges show dim or flickering gauges longer charge, meaning it will kill electrical! Battery cranks the engine running ( you 'll look wires run from the battery check. Below 10.8 volts, the stator for both resistance and voltage placed during the weekends or charging. The two connectors for the damn things charge voltage to the connector unplugged, you will notice several.. Dead, and from the alternator 's ability to cycle power from the regulator is a fundamental of! Can sometimes be difficult to track down the insulation can cause the vehicle may stop working “crow-bar. Is possible that the stator inputs voltage Output can first check to make sure the.

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