Question about 2001 Honda VFR 800

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Battery does not hold charge but alternator is fine pannel on right milage gas and temperature clock when 10 amp fuse is removed bike will run on one head light on two head lights will not hold charge 2001 honda vfr 800cc

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Sounds like bad cell in battery,check

Posted on May 23, 2011


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08 gsxr turned off while idling and wouldn't turn back over

When the engine is idling, the alternator is not charging. Starting the bike will drain a weak battery. A fast idle (1000 rpm or so) will quickly recharge the battery. If the battery is dead and the alternator is not charging the bike will not run. Check the connections at the battery. Remove and clean them. Check the main fuse and all other fuses. (The temp indication may be a false reading due to other problems.)

Apr 13, 2014 | 2008 Suzuki GSX-R 600

1 Answer

Just did a motor job, charged battery, car starts and runs fine, until battery dies, put two different alternators in it, still same problem,fusible links have resistance to, any ideas?

problem could be the positive battery bad need replacing also negative battery cable if both are old, make sure the small positive red 10 gauge wire that part of the positive battery cable is crimp have tight connection that wires run directly to starter fuse link.make sure you have the right amp alternator and check alternator fuse.

Aug 30, 2012 | 2003 Chevrolet Impala

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Battery not holding charge. new brushes in alternator.

have alternator tested for free see if its putting out correct amount of amps to charge battery

Dec 09, 2010 | 1997 Mazda 626

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altenators have to be running a 13.5 volt charge to be good

Mar 12, 2010 | Cadillac Eldorado Cars & Trucks

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New alternator wont hold a charge is there a special fuse for the alternator if so where is it located. 2 brand new alternators and batteries so far

If you have a fuse it will be in the power distribution center near the battery main fuses and relays are inside.
Check the charging system with a volt meter right at the battery. Battery standing charge should be no lower than 12v if charging you should read between 13 and 14 volts running, about 13 with all electricals turned on. If not, the alternator isn't working OR the regulator has failed. (some regulators are part of the main computer but you need to check which system you have. AND do check for fuses.
If charging system is working you may have a system draw that is pulling the system down overnight. Check that with an ammeter between either cable (removed from battery) and battery connection...pull fuses one by one till draw disappears then check components in that system. Don't be concerned with "low Draw" items such as radio that always pulls something to keep memory and clock working.

Jan 23, 2010 | 1990 Jeep Wrangler

6 Answers

My motorcycle battery is not holding charge

If it's not holding a charge I need to know when it is loosing it... By this I mean is it running and not charging or is it going dead over night ,week , month? If it is going dead when you are running the bike I would say it's not charging and need to check output of the stator. If that is good next logical place is regulator rectifier. This is a common problem. If it is going dead when setting you will have to find a short circuit, you can start by using an ampmeter and disconnecting the ground cable to put the ampmeter in the middle, start pulling fuses till amp load drops and that will be the circuit to start with.

Sep 18, 2009 | 1983 Suzuki GSX 750 ES

3 Answers

How do I check alternator amperage on a 2001 maxima?

  1. Check the gauges, if the car is equipped with them. If you have a volt/amp gauge, it will read the alternator output for you. Turn on the blower fan for the AC or Heater, the headlamps, and any other accessories that put a strain on the alternator, and watch the gauge to see if it decreases voltage or amperage. As a rule, if the voltmeter is higher when the engine is running then when the engine is not, you can confidently assume that the alternator is charging.
  2. Open the hood, and with the car engine off, loosen the negative battery cable so that it can be removed with little effort. With the battery cable still loosely attached to the terminal, crank the engine, then pull the battery cable completely free of the terminal. If the engine continues to run, the alternator is providing enough voltage to power the electric circuits that provide spark to the spark plugs, electric fuel pumps, etc. You can increase the demand on the alternator by turning on headlamps, heater blower fans, and other electrical accessories to determine the draw capability of your alternator. If the engine immediately dies when the cable is removed, the alternator is probably bad
1. Put a voltmeter as close to the alternator as possible. (Positive and Negative both.) If you can put the meter leads directly on or in the wire coming off the alternator that would be optimum.

2. Now start the car and turn all accessories off and check the voltage level. It should be between 13.5 and 15.1 volts. (depends on your make and model of car) It is a good idea to write down all voltage readings your taking. The main thing your looking for is a drop in voltage. Once you hit around 12.5, your alternator is not going to produce any additional amperage.

3. Now turn on one accessory at a time. Write down that accessories fuse rating. Keep turning on accessories and adding fuse ratings until the voltage falls to 12.5. Now add 15 amps if your electric cooling fans are on and 10 amps per battery in your system. Your numbers may look like this.

2 batteries- 20 amps
Cooling fan- 15 amps
Headlights - 10 amps
A/C blower - 10 amps
Rear Dfrst - 15 amps
High Beams - 10 amps
Fuel Pump - 10 amps

Aug 05, 2009 | 2001 Nissan Maxima

1 Answer

Bike hasn't been running for months. change of owner. low batt. Boosted off truck. All four cable leads conected, ''truck to bike'',truck started, main fuse blows: 1-stator coil de-magnitized ...

First of all, when boost starting a bike from a auto make sure the auto is NOT running. The auto battery has more than enough power all by itself.

The most likely is 4) None of the above. The truck's charging system put more than 30 amps into the bike's electrical system and blew the fuse.

Get a new bike battery and fully charge it. Then go from there. If you really want to see if the bike will run before buying a new battery go ahead and hook up the cables to the truck battery and try it with the truck off.

A faulty alternator/regulator/rectifier should have no effect on the bike actually starting or turning over. Only the output of the charging system would be affected, possibly causing the bike to die when the cables are removed. My '78 Honda would not run at all without battery power, not sure if the Kawasaki is the same or not.

Jul 20, 2009 | 1979 kawasaki KZ 1300 A1

3 Answers

2005 Triumph Daytona 955i Dead Battery and Check engine Light

I have just found my 30 amp fuse blown on my daytona , this prevents the alternator working , it was reading 10.9v before I changed the 30 amp fuse , now it reads 14.5 volts , I think I blew it as I didnt know how to put the alarn into service mode and left the ignition on , anyway I am hoping its just that , 3 heat up/cool down cycles and the engine management light should go out


Dec 24, 2008 | 2005 Triumph Daytona 955i

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