An engine accessory which generates alternating current (AC). The electricity is then fed through diodes which converts it from AC to direct current (DC), which is usable by the automobile in general. The alternator is usually driven by belts which are connected to the crankshaft of the engine which ...

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3
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0answers
38 views

Citroen C2 Alternator

Please if someone could help me ill really appreciate it. I've got a Citroen C2 the Bendix of the starter was completely worn so we purchased a new starter and put it in. At first it started. Once ...
2
votes
3answers
8k views

Rover 25 - My battery light starts flickering on/off on the dashboard

My girlfriend noticed this yesterday and thought it was odd, it stopped but started happening again this morning on my way to work, I think its a V plate.... "as I’m driving along my battery light ...
1
vote
1answer
232 views

Changed alternator in '05 Altima, now it won't start

The alternator went bad a couple of months ago. I replaced it and the car started and ran fine. During a road trip on Tuesday, the battery and brake dummy lights flashed intermittently and eventually ...
3
votes
1answer
2k views

Car won't start - replaced alternator - didn't help

I have a 5-6 years old Mazda 6 2010, 2.5L engine. My car simply won't start. I had this issue yesterday, so I called roadside assistance and they were able to jump start my car. I drove straight to ...
4
votes
3answers
664 views

Is it safe to charge two batteries off of one alternator?

Right now I have a 3000 Watt invertor wired to a 100ah sealed deep cell battery that I trickle charge at night. My plan is to run #6 wire from the battery in the engine to the spare battery so the ...
3
votes
3answers
13k views

Battery light comes on after starting the car. How big of a problem is this?

On my way to work this morning, the battery light came on. I would say it was about 2-3 minutes after I started the car. My drive to work is only a 10 minutes drive, and the light was on the whole ...
3
votes
2answers
168 views

2004 Nissan Altima with new alternator won't accelerate, but will rev in neutral. No power in car.

Hey internet mechanics! I replaced my alternator yesterday because it was faulty (pulling a charge from my battery and killing it every night while car was off). After installing the new alternator, ...
1
vote
3answers
341 views

Installed new alternator, now no power

I just put a new alternator on my 76 Winnebago motor home yesterday and it started just fine two times and now I have no power at all. No head lights, no cigarette lighter, nothing. Tested the ...
2
votes
1answer
136 views

Alternator voltage range

I'm just trying to figure out the normal operating range of an alternator. The best I've found is: http://www.f150online.com/forums/electrical-systems/469058-alternator-high-voltage-15-3v.html ...
4
votes
3answers
420 views

Engine Mounts issue can be caused by replacing Alternator?

My mechanic recently replaced the alternator on my 2007 Toyota Camry. When he returned the car to me he said that my motor mounts need to be replaced. Now I notice a vibration at idle. I am not a ...
2
votes
1answer
3k views

Nissan Altima Alternator/Battery Problems

I own a 2005 Nissan Altima which has been having alternator/battery problems for past 1 year. My car has 112,000 miles on it. My car battery was past warranty so I had the battery replaced about a ...
1
vote
2answers
94 views

Battery/alternator on 99 Chevy Prizm?

My car was running fine (no lights/warnings). The next day I tried to start it and it was completely dead not even a click sound like normal battery is going bad kind of thing. After I got it jumped ...
6
votes
1answer
422 views

Alternator, Battery, or Fluke?

While we were out running errands yesterday, our car failed to start after a half hour stop at one of our destinations. The first attempt to start the car resulted in nothing but a rapid clicking ...
3
votes
0answers
63 views

Typical voltage drop when air con, radio, lights, etc. in use

Imagine the engine/alternator are running and the battery voltage is 14V. If I now turn on the air conditioner, radio, headlights, seat warmer, cigarette lighter, should I now expect the voltage to ...
5
votes
1answer
1k views

Can a bad battery damage voltage regulator?

I have a '91 Ford Sierra Saphire 2.0 OHC (pinto). Have been struggling with having no charge for weeks now. I've tried two different alternators, had one of them completely rebuilt by a professional, ...
4
votes
2answers
90 views

1998 BMW 318is excessive current draw - possible starter issue

My 1997 BMW 318is started making a whirring noise that varies with engine speed, and an electrical burning smell after driving, and the battery goes flat very quickly. I measured the current draw ...
4
votes
1answer
88 views

Alternator/Battery power question

Good Afternoon, I have a 2014 Ford Focus SE that i use as my Work Vehicle. I work in Emergency Roadside Assistance. I have to run a laptop In the car in order to direct calls to other employees and ...
2
votes
1answer
576 views

Chevy Malibu 2009 won't start

I have a 2009 Malibu, yesterday I was heading back from school, then I started hearing a bizare sound like a whining sound, 2 minutes afterwards the engine stopped. When I got off to check under the ...
2
votes
1answer
180 views

Car stalled and restarted after some minutes

I have a very old car which uses mechanical transmission (Maruti Zen) Recently while driving on the road, I switched off the engine because of heavy still traffic. I forgot to turn off the head ...
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vote
0answers
342 views

Car won't start but all power works [closed]

I have a 2005 GMC Envoy. It will not turnover or click but all power and lights work. I can hear the fuel pump kick in. When I turn the key nothing happens. I touched the starter with a screwdriver ...
1
vote
1answer
212 views

battery and alternator problems, 2003 olds alero

I had a battery fail in my 2003 olds alero (6 cyl), replaced it, then my alternator failed (bosch), replaced that now the new alternator failed after 2 days why?
3
votes
2answers
180 views

Why did replacing the battery eliminate these symptoms?

I have a 2006 Honda Civic SI. It was slow to crank when starting up, and while driving, electrical systems progressively got worse (radio would turn off and on, power steering would stop, and then ...
7
votes
2answers
242 views

Is any power from the alternator 'free'?

Cars generally (and specifically a Honda Accord 2002) are not very energy-efficient. Given all the inefficiencies, is it "free" to plug in, say, a smartphone into a car to charge while I am driving? ...
4
votes
2answers
3k views

What is the correct/factory wiring for a Suburban 1998 battery/alternator?

I have included a picture showing what I have now on this Suburban. Note that there is wiring not shown in the picture which is a second electrical connection to the positive side of the battery ...
3
votes
3answers
1k views

Toyota Celica battery light on but alternator appears okay on visual/auditory inspection

Today the battery light decided to rear its head on my Celica. I know this normally points to the alternator, but given that I just replaced a bad alternator in my Chrystler, I can tell what a bad ...
2
votes
2answers
408 views

2009 Aveo electrical problem

I have a 2009 Chevrolet Aveo that I bought new from the dealer. Today I was running errands around town and just as I was about the get on the highway to head home, the battery light and emergency ...
2
votes
3answers
429 views

98 Tiburon won't start and doesn't make a noise

I have a 98 hyundai tiburon. recently the battery light went on when I was driving. the next day my girlfriend left the headlights on and the battery died. We tried to jump it with no luck. I got the ...
7
votes
1answer
1k views

Why would turning on the A/C affect my alternator output voltage?

So yet another chapter unfolds in the A/C gremlin saga of my LS1 Chevy. Backdrop A/C compressor is relatively new (2 years old) One of the belts is squeaking (not sure which one) Recently performed ...
2
votes
2answers
632 views

Clicking sound when trying to use electronics in my car

I own Toyota Avensis 2001 D4D 2.0 estate. Here is the problem: https://www.dropbox.com/s/ury2rt9wct6dasz/2014-08-18%2017.25.46.mp4 When I am trying to start it - it wont even turn the starter, ...
6
votes
2answers
204 views

Alternator vs Battery

I hadn't used my car in a week. Normally it always starts. Then one day after one week it didn't start. I got a jump from my neighbor and i was able to drive around for more than 20 minutes. I stopped ...
2
votes
1answer
900 views

2002 Hyundai Accent not charging battery

Hyundai Accent battery will not charge. Had battery tested, bad, replaced. Had alternator tested, bad, replaced. I installed the alternator myself, from what I remember it was connected by two plugs, ...
3
votes
1answer
4k views

Battery dash light comes on when starting car then disappears while driving

2002 Honda Civic EX here. When I start my car, my battery dash light has been staying on usually until I get onto the highway, then it will turn off. If I hit a stop sign or red light, then it'll ...
1
vote
1answer
264 views

Please advise on check gauges light on and battery gauge reads zero

Saw this thread while investigating what sounds like the same problem with my jeep. The check gauge light came on and my battery gauge bottomed out. But weird thing is, it ran fine. I drove it a few ...
1
vote
1answer
467 views

When is a magneto more efficient than an alternator?

A magneto is device similar to an alternator for creating electrical energy. Many small gas engines, including several road worthy motorcycles, use them to generate electrical energy. They can be ...
2
votes
1answer
2k views

How to replace an alternator?

I've got an '05 Mazda 3 SP 2.3 and my question is how do I replace my alternator? My situation is pretty much the exact same as described on this site: ...
2
votes
2answers
151 views

Battery running flat on a regular basis

I drive a Vauxhall/Opel Astra Mk5 1.8l SRi, registered in 2004. For 2/3 months now I've been having to keep a spare battery in the car as the car battery is running flat. My first thought was that ...
4
votes
1answer
355 views

How long should fusible links be?

I've installed a 12" fusible link as a replacement for a fusible link on the line that charges the battery from the alternator. I showed the OEM part to the guy at the parts store and he gave me a 12" ...
1
vote
1answer
374 views

Juddering under load

My 2001 Ford Focus judders when idle, and is most seen under load. The rev counter goes from roughly 500rpm to 1500rpm during this juddering cycle, as if it is "hunting" for the correct place to be. ...
2
votes
1answer
135 views

Specs for a Toyota Avalon 97 Alternator?

So I was told during a check-up at a Jiffy Lube oil change that their analysis turned up a failed alternator giving 12.1V. Given that Jiffy Lube doesn't replace parts and thus gains nothing if I do, I ...
2
votes
3answers
2k views

Is rebuilding an alternator a DIY project?

I'd like a high performance alternator similar to one of these. Is it possible to rebuild a stock alternator to similar output, using majority of tools one would have at a home garage? Of course one ...
3
votes
2answers
5k views

Why did my car stall when I used the foot brake?

Preface: I drive a 2004 Peugeot 206, manual On the motorway the other night, one of my tires blew out. I managed to pull over and change to the spare wheel in about 30 minutes (having never changed a ...
3
votes
2answers
785 views

'03 Mazda Tribute needs jumped every time it starts

I have a 2003 Mazda Tribute. I'm not entirely sure what the problem is with the vehicle. I suppose it could be the alternator or just a dead battery, but could also be something more detailed. I have ...
3
votes
2answers
612 views

Safe resistance between alternator and battery?

I am trying to figure out which awg of wire I need to get for my new, 160 amp, alternator. I found this chart which shows the resistivity/length of different wire gauges. Chances are that I will not ...
5
votes
3answers
639 views

93 Nissan Sentra SE-R, replaced alternator voltage still low

My car died while I was driving it, but I can put the battery on a charger (or from another car, with jumper cables) and get it running albeit for a short period of time. I put a multimeter on the ...
2
votes
2answers
1k views

Is alternator rating at pulley rpm or engine rpm?

I just got a new alternator for my jeep that says 160amps at 2k rpm. Is this rating for the pulley rpm on the alternator - or is it the rpm of the engine? Also, if the pulley is spinning slower than ...
7
votes
3answers
3k views

Does idle RPM increase when there is heavy load on the electrical system?

I am thinking about installing a 500w halogen (HDX brand) on the roll bar in my jeep as the dome light because often I work in the back when it is dark or when I would like more light. The 500w light ...
7
votes
2answers
614 views

How to detect a failing car alternator..?

Is there some way we can predict that the car alternator is about to fail in order to avoid a discharged battery situation on the road.. Although it will slow the sound of horn and will dim the ...
1
vote
1answer
205 views

2001 Grand Cherokee Has not been starting?

In September someone broke into my car, nothing was missing but the alarm went off until the next day I came back from school and the battery was completely drained. So my dad jump started it and ...
4
votes
1answer
3k views

How to repair alternator slip rings to stop squeaking?

Background I have a new Bosch CS-130 style alternator with a couple hundred miles on it. Since I installed it, it's been a little noisy, but I attributed that to the brushes breaking in to mate with ...
1
vote
1answer
855 views

97 Ford Explorer battery going dead

On Friday, my girlfriend's '97 Ford Explorer v6 lost electrical while driving. We were able to get it going again with a jump start. Lost electricity (lights / gauges) while driving, but were able to ...