Skip to content
Bad Voltage Regulator Symptoms
The regulator is typically located on the front of the motorcycle, mounted to the frame. take the neg bat cable off. Thanks for the 2 suggestions, guys, they were both right. Regardless of the reason why your alternator fails, in most cases, the warning signs are there before an alternator fails. Here are bad valve symptoms to look for. The most common starter problem is bad starter contacts. Does this mean you are using a battery charger? If so, why? If your battery is going dead it's either a bad charging system, a bad battery (will not hold a charge) or a current draw when the boat is not running. To check your charging system get yourself a voltmeter, charge the battery and check the voltage. Some alternators apply voltage to a ground field ( rotor) and others apply ground to the field to control the rotor field current. This is one of the most difficult faults to find. Since 1968, West Marine has grown to over 250 local stores, with knowledgeable Associates happy to assist. Idle voltage was 12. Below are the top 5 symptoms for you to watch out for in case the fuel pressure sensor of your vehicle goes bad. The tachometer is also connected to the voltage regulator and uses the incoming a/c frequency to drive the tachometer (grey wire)and they CAN and DEFINITELY DO CAUSE IGNITION SYSTEM FAILURES. The voltage regulator is supposed to shunt excess to ground. Second, if your car is pre- 1970, use a stock, 1970-up style “flatpack” voltage regulator. We can start guiding you from there. Alternator/generator/regulator Problems of Nissan Murano - part 1 Nissan Murano owners have reported 244 problems related to alternator/generator/regulator (under the electrical system category). The voltage regulator is an integrated part of the alternator and cannot be replaced, if it is bad. Based on signals from the ICP to the PCM, your 7.
Looking for symptoms helps guide us to the most likely cause. Especially if the battery, battery cables, alternator, and voltage regulator are new. NOTE: the output from the stator is very high putting a high thermal load on the regulator/rectifier. To check your charging system get yourself a voltmeter, charge the battery and check the voltage. One of the first symptoms of a bad or failing alternator is the need to jump start the vehicle on a regular basis. After I started it it would go down to about 12. Fuel pumps quit working for many reasons, but once it happens the fuel injectors will be without fuel and the vehicle will stall. Excess power is converted into heat by the regulator to get rid of it. For instance, an excessive air gap between a Hall-effect sensor and the reluctor ring on the crankshaft might produce an abnormally low signal voltage, while a defective alternator that overcharges might induce an abnormally high signal voltage in other types of sensor, and by extension, in the voltage that ultimately reaches the Ignition Control Module. The design of this light is that it sense if the regulator gets input voltage or not. A bad battery will put a BAD load on the alternator/regulator and can cause it/them to fail. 5hr up to 12. Free Same Day Store Pickup. Replaced alternator have same problem. All of them had internal voltage regulator failures.
I found out that AVR may be an abbreviation for Automatic Voltage Regulator(AVR). If the ground is not constant, the regulator will operate improperly, causing it to short out. ) If you have excessive current demands, but want to keep the stock look, kits are available for swapping the stator windings and diode packs to beefier versions. I bought a voltage regulator just because thats one thing I haven't changed on the car. The voltage regulator sends a voltage to the ECM through the C circuit. 8 or a little higher. not fun to chase down, hope it is a ground issue and yes most of them are at the starter solinoid mount, but some can be at frame points. Test the voltage with the engine not running and nothing turned on. It looked like the entire rectifier assembly had been overheating, but I put that down to the shorted diode. 3 IPR valve — Injection Pressure Regulator sensor — works together with the high pressure oil pump to "create" oil pressure. Start the motorcycle. Also, due to the design of the regulator's switching circuitry, these generators develop huge, harmful voltage spikes that can damage the internal diodes and voltage regulator, and can interfere with computer sensor signals. If gas is in the line, your fuel pressure regulator is bad. When I test what you refer to as "residual magnetism" of the generator, mine is a little higher, 3-5 volts usually. I left it running to see if the battery would charge. I waited a min.
An indication of a bad rectifier could be "12V Low" indicated on the display or a battery that won't stay charged. Aside from a dead car battery, there are other signs of a bad alternator that aren't as, well, extreme. When it fails it will leave you stranded with a dead battery. Grid is 1 inch square. 2 (2/10) volts of each other. as soon as I turn the key on the main fuse is blowing. BEST ANSWER: A voltage regulator has nothing to do with the starting circuit, if you are hearing the solenoid “click” when you press the accelerator then test the continuity through the solenoid when it clicks, you should have battery positive voltage on both large solenoid lugs (when you press the pedal). I waited a min. If the stator or the regulator is bad, will the motorcycle shut off? I have a 2001 Honda CBR600 F4i. Did you replace all the ball joints yourself? If the plastic cover annoys you, remove it. Humans can be sensitive to light flicker caused by voltage fluctuations. If the needle doesn't move, then the problem is not with the solenoid. It should put out every bit of it's rated amperage and then some. I've changed out the voltage regulator and no change, same symptom. Even though the generator's voltage is controlled it is possible for its current to run too high. 65 Mustang and Ford Radio Suppressor / Capacitor at Voltage Regulator C3SA-18832-A 66 Mustang and Ford Radio Suppressor / Capacitor at Voltage Regulator C6OA. The most common starter problem is bad starter contacts.
Depending on the condition of the contacts, the starter may engage after a few repeated key cycles. Starter Voltage Drop Test Explained in Plain English As an instructor, I would see some techs in class cringe when they heard the words “voltage drop test” for testing poor starter circuit symptoms. If the voltage regulator malfunctions, it will stop the flow of current to the batteries causing the batteries to drain. A linear direct current regulated supply will maintain the output voltage unless the brownout is severe and the input voltage drops below the drop out voltage for the regulator, at which point the output voltage will fall and high levels of ripple from the rectifier/reservoir capacitor will appear on the output. The voltage regulator is an integrated part of the alternator and cannot be replaced, if it is bad. 5 Common Symptoms of Failure Fuel Pressure Sensor If there is something wrong with your fuel pressure sensor, then there are some easily recognizable symptoms that will become apparent to you. Excess power is converted into heat by the regulator to get rid of it. After they replaced the alternator I have no problems with fluctuating voltage. Whereas alternator bad connections will just get hot, generator bad connections result in a battery not being charged. There are a few things to inspect, such as: a broken terminal, bulge or bump in the case, crack or rupture of the case, excessive leaking, and discoloration. You may have to register before you can post: click the register link above to proceed. If you think you have a bad alternator, diagnose your problems with the alternator testing procedures below. What causes an outboard voltage regulator to go up in smoke? I have a 2003 Mercury 90-HP FOURSTROKE. See how to test a window motor below. If your tests determined that you have a bad voltage regulator, check your local auto parts stores or online for availability.
Idle voltage was 12. Technician B says that a defective rectifier diode could be the cause of the voltage drop. Do these sound like the symptoms of a failed Voltage Regulator? I've already checked all of my cables, cleaned connections, tightened all connections, etc. A voltage regulator maintains an even flow of electrical power to an automobile's electrical systems, including the headlights, dashboard components and the stereo. We hope this article has helped you understand the symptoms of a bad solenoid on a golf cart. Engine is low on power or has a "miss". The first deals with diode burnout, resulting in battery drain. Aside from a dead car battery, there are other signs of a bad alternator that aren't as, well, extreme. com If you've got voltage problems on your DI or RFI powered Sea Doo, it's usually due to a bad rectifier. I may be wrong, but I'm pretty sure a bad voltage regulator will not prevent the car from starting, it will only fry your electrical system or not charge the battery properly once the car is running. But, if you want to rule out a bad connection between the alternator and the battery, hook an external voltmeter between the alternator output and the + battery terminal (not the clamp) and measure the voltage drop. Measure the voltage across the battery with the bike running, and tell us what it says. Then there is the voltage control of the generator. Alternator/generator/regulator Problems of GMC Sierra GMC Sierra owners have reported 9 problems related to alternator/generator/regulator (under the electrical system category). Symptoms of a bad voltage regulator might include a dead battery, dim or pulsing dash lights, or erratic engine performance. bad voltage regulator? So after mistakenly hooking my battery up backwards I have replaced the battery and the blown alternator. Symptoms Of A BAD Alternator. Warning Signs of a Bad Alternator. Where To Buy The Alternator. 0L 2500HD that i am trying to sell.
Started off in the 14s, dropped in the low 13s. Test the voltage with the engine not running and nothing turned on. Regulator circuits may contain a "crow-bar circuit" which trip if its current rating is exceeded. Alternator and Regulator Troubleshooting B R. My 332 definitely had a bad regulator. Whereas alternator bad connections will just get hot, generator bad connections result in a battery not being charged. Those symptoms seem right for a dead alternator or voltage regulator. (but you will probably see the voltage drop instead of raise, and you will be doing the other test shortly anyway. The kit costs $121. could it be the. Failed Shunt Regulator If this happens, your headlight may become very bright and then blow. If your tests determined that you have a bad voltage regulator, check your local auto parts stores or online for availability. I like to call this "run insurance". Consult your vehicle repair manual, if necessary. Honda: 5 Symptoms of a Bad Fuel System. Just to double confirm the manual the regulator is bad correct?. The voltage regulator should be grounding anything above 13.
Engine is hard to start especially after sitting from a run. (Thread Starter) Symptoms indicate a bad alternator. The voltage regulator shows 4 terminals, two for the ac stator side and two that go to the battery, one to ground and the other to positive. Regulators with a red wire for charging the battery simply have a diode to create a pulsing DC signal for the battery. (b) T u r n off ignition switch and disconnect voltage regulator connector. 2) No startup at all under any circumstances with power provided to power plug. If an automotive alternator (Question misses the assertion of where the alternator is, and what drives the alterntor), is deemed to be ‘overcharging’, then you need to look at all of the things that can cause a reduction in current. A specific gravity tester can be used to detect a bad cell if the battery has removable cell caps. I have always been around machinery all my life and have always owned some type of ride on equipment, from 3 wheelers, dirt bikes, trail bikes, mopeds, road bikes, tractors, etc, etc, etc. The bad news is that the point gaps and spring pressures determine the voltage/current limits and they are exceedingly hard to adjust. Where's my voltage. For external regulators, go to Step 06. All of them had internal voltage regulator failures. I had one that would slowly drop the charging voltage. When the alternator is rebuilt, the bearings, voltage regulator, brushes and some other parts are typically replaced with new ones. Symptoms of a Bad or Failing Instrument Voltage Regulator Common signs include dim or flickering gauges, inaccurate or erratic readings from the voltage regulator, and an inoperable instrument cluster. Engine Sputters at High Speeds. That is with new brushes and armeture though. It sends the current through a voltage regulator rectifier that ensures the current is within the required voltage range to charge the battery without damaging it while also converting the power from the stator’s AC output to a DC current that can charge the battery. 3 Powerstroke HPOP provides oil volume to the 7.
5 to 14 volts. The alternator is not generating enough charge to run the engine and maintain the charge in the battery. You can find it by clicking on the image below. The black lead from the voltage regulator also connects here as well. One is a bad stator, use the procedure in the manual posted to check it both statically and dynamticly. Regulators for Polaris – Why They Burn. I started it up and took off the negative to see if it would still run (testing the alternator) and it kept running so we're good there. When my stock OEM regulator-rectifier went bad, I did some research and found a website called Roadster Cycle, run by a guy named Jack Fleming. I took it to Autozone for testing, the test said the voltage regulator was bad. Robin/Subaru VOLTAGE REGULATOR. Actually the voltage regulator should have been called a Regulator/Bridge assembly instead of just a voltage regulator because it does both. A weak or bad voltage regulator will usually produce the symptoms you describe with the slowness of wipers and dimming of headlights. A voltmeter should jump to ~15V and climb if the alternator is good. What's your issue. The voltage regulator is part of the alternator. Measure the resistance in between both holes on the stator plug. Ground connections are important for good voltage, and if there is faulty voltage, the regulator rectifier can run hot. Can a bad voltage regulator cause the main 30 amp fuse to blow? I have blown 5 30 amp fuses trying to figure out whats happening. Click image to find your voltage regulator.
You are looking for 14+ Volts across the terminals. Fortunately, determining the cause of a battery drain is pretty easy. The voltage should be between 14. If one is bad do yourself a favor and swap out stator and voltage regulator. regulator was out. TEST 3: Part 1 -Alternator is New But It Still Doesn't Charge the Battery. P0563 Possible Symptoms Engine Light ON (or Service Engine Soon Warning Light). Let it run out of gas. About 100V. ECM not communicating with alternator's voltage regulator. Then it's got an external voltage regulator. Thanks -Kirt. The regulator is what holds the voltage output at a steady (suitable) level. They’re inexpensive and easy to replace, you just have to make the time. As good questions draw good answers Note! Personal memo to myself. 5 Symptoms Of A Bad Car Battery Cell. Causes are age, heat and vibration. i dont see any other problems happening to ur bike if the voltage regulator is bad.
1 @2000 rpm at 77F (25C). If it jumps and displays full voltage, then the solenoid is the problem and should be replaced with a new one. A voltmeter should jump to ~15V and climb if the alternator is good. Need other parts? If you need parts not listed in the application guide, please see:. regulator was out. I've changed out the voltage regulator and no change, same symptom. Sounds like a bad voltage regulator to meAll other components have tested good. Vacuum to the pressure regulator is momentarily cut and the fuel pressure increased to slightly more than 41. The voltage regulator ensures the irregular electrical supply from the engine is turned in to a smooth current to recharge the car battery. I got home and kept the engine running and pulled the ground on the battery. To find out if the battery is charging you need to read the output voltage of the battery with a volt meter. The voltage that is induced in the coil (secondary) circuit is the result of the mutual induced current from the magnetic field collapsing. If the needle doesn’t move, then the problem is not with the solenoid. 2 (2/10) volts of each other. Second, if your car is pre- 1970, use a stock, 1970-up style “flatpack” voltage regulator.
Voltage Regulators and Rectifiers for Sea Doo PWC Welcome to RegulatorRectifier. com FREE DELIVERY possible on eligible purchases. Note, the alternator does not work very efficiently at a low rpm, the alternator needs to get above 3000 rpm to get a good reading. If the needle doesn’t move, then the problem is not with the solenoid. If the voltage regulator malfunctions, it will stop the flow of current to the batteries causing the batteries to drain. Robin/Subaru VOLTAGE REGULATOR. Also make sure battery cables, the connections at the junction block are clean and tight and you have the small ground wire from the battery to the fender. when you rotate the crank there is a ac voltage going to the regulator and this will connect insite the white-red wire to the negatieve (brown wire) and the power relais go,s on. If one is bad do yourself a favor and swap out stator and voltage regulator. Too much power or not enough output. My 332 definitely had a bad regulator. Timing light showed a flash when key was turned on to "start" & again when released. On most modern bikes there is a combined rectifier/regulator (reg/rect). High no-load voltage: Speed to High Capacitor with high capacity: Check and adjust rpm Check and replace: Low no-load voltage: Speed to low Faulty rotary diodes Breakdown in windings Capacitor with low capacity: Check and adjust rpm Check and replace Check winding resistance Check and replace: Proper no-load but low loaded voltage: Low loaded. I like to call this "run insurance". 6 volts DC (1 red wire). After I started it it would go down to about 12. One of the first symptoms of a bad or failing alternator is the need to jump start the vehicle on a regular basis. It’s quicker and smarter to routinely check a circuit’s voltage drop than it is to memorize long lists of symp-toms. Consult your vehicle repair manual, if necessary.
"Okay, boat & motor are 11yrs old. as soon as I turn the key on the main fuse is blowing. The Engine Control Module (ECM) has detected that the electrical system voltage level is out of range. To test a capacitor, a multi-meter that can test capacitance is required. WARNING * Gasoline is extremely flammable and explosive under certain conditions. One opinion says that if the engine is starting and running fine (without the voltage regulator attached) then the problem is not due to a bad stator. Excess power is converted into heat by the regulator to get rid of it. When it fails it will leave you stranded with a dead battery. Voltage regulators are commonly found in vehicles and other electronic equipment. Shut the engine off and remove the field wire from the regulator, connect the voltmeter + lead to the armature terminal. Thanks -Kirt. I'm not saying the alternator isn't bad, just reporting what I was told. Any of those problems will affect not only the ELD but also the voltage regulator inside the alternator and the O2 sensors. Fortunately, determining the cause of a battery drain is pretty easy. The boat should be ready if not Friday then Monday depending on the arrival of the part(s). 7 volts if fully charged.
5V or more with the engine running, there is a connection problem downstream. If the red battery message still shows after installing a new battery that tests well, then the problem could be a bad voltage regulator. Bad Window Switch / Bad Wiring: If your window problem is only on one side, the cause is most likely a bad switch, bad wiring, or a bad window motor. Re: 2010 rmk 800 voltage regulator issue!! You can do alot of things on your sled to pervent that problem. If the oem battery started leaking from the post like many do it will corrode the positive wire to the point that it can kill the alternator and battery. Fuel pumps quit working for many reasons, but once it happens the fuel injectors will be without fuel and the vehicle will stall. For my heater blower, I'm not getting nearly enough voltage (3v) and at my radio i'm getting 22V. Both high and low voltages can cause premature motor failure, as will voltage imbalance. Thanks all. When the alternator is rebuilt, the bearings, voltage regulator, brushes and some other parts are typically replaced with new ones. 3 of them I couldn't figure out what was going on. under the gauge pod has at least one i. My voltage regulator keeps going out. We hope this article has helped you understand the symptoms of a bad solenoid on a golf cart. Start the engine and run at a fast idle again. The bad dates were somewhere from October 2011 to February 2012.
Whether you're an Auto-Tech or not this information will help you to successfully diagnose a bad alternator WITHOUT the use of expensive testing equipment. The jeep is still running fine while this happens. (Thread Starter) Symptoms indicate a bad alternator. 5V, by installing this regulator, it takes 10 minutes to do! Many customers have reported their "charging voltage" in the mid 13 range, which is pitiful!. waveform (i. I recently had to replace the battery and voltage regulator on our 2011 Softail Classic, this all happened while out of town of course so i did not have the needed test equipment to check everything once the battery light came on, battery did die and verified bad, end result the regulator was bad. Voltage Regulators and Rectifiers for Sea Doo PWC Welcome to RegulatorRectifier. So here are the symptoms of a bad alternator. The bad news is that the point gaps and spring pressures determine the voltage/current limits and they are exceedingly hard to adjust. The voltage regulator inside it was not functioning. The voltage regulator sends the proper amount of voltage from the alternator to the battery to keep the battery charged. They charge your vessel's battery(s). I took mine in on Monday and they just called a few minutes ago and said that the voltage regulator did need to be replaced and the part(s) are coming from Fond du Lac WI and should be here in three days. I suspected the battery could not provide sufficient amperage for the spark required at high loads. Installed the alternator and new regulator with my allready new battery and started it up and the damn thing only read 12. Several trips prior to that everything was normal, but one trip back in June I had some funny voltage reading also. Radio won't power up, of. not fun to chase down, hope it is a ground issue and yes most of them are at the starter solinoid mount, but some can be at frame points. The motorcycle battery is not charging.
Installed the alternator and new regulator with my allready new battery and started it up and the damn thing only read 12. 4 volts and if there was a difference of more than. Another possibility is yes. They are different parts. The motorcycle battery is not charging. The voltage regulator is out of the circuit when cranking with the stock systems; assuming you have the stock Mopar electronic ignition and wiring, the VR won't even be active during cranking. 6 at either terminal. If that is present then take a multimeter set on AC volts and put a lead on each white wire on the regulator plug and start the engine and rev it up, You should get a reading of 32 volts or above. Check for voltage drop between cover of voltage regulator and body on low voltage scale of voltmeter. Restart testing from step 1. Dealer having trouble getting one from the factory. All of them had internal voltage regulator failures. You can carefully remove the cover, some are screwed on, others are tab bend, check to make sure the points, which excite the alternator, aren't fused closed to cause this. We hope this article has helped you understand the symptoms of a bad solenoid on a golf cart. I would pull it and have it tested at an auto parts store if your not sure. 3 IPR valve — Injection Pressure Regulator sensor — works together with the high pressure oil pump to "create" oil pressure. Each of these symptoms can also be attributed to other causes, but if the voltage regulator is failing, it can prevent the battery from charging properly or the alternator from putting out the correct voltage for vehicle. I took it to Autozone for testing, the test said the voltage regulator was bad. Here is the second, an alternator recall: #10117A: Product Safety - Voltage Regulator Internal Low Resistance Short - (Jul 14, 2010) Condition Remy, who supplies generators to GM, has decided that a defect, which relates to motor vehicle safety, exists in certain 145 amp generator. Is it possible for the fuel rail pressure sensor to go wrong? Yes, it is quite possible for the fuel rail pressure sensor to go wrong. Bad Voltage Regulator Symptoms.