Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [alternator]

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 provides the motion to produce power.

1
vote
1answer
19 views

Should I Replace The Alternator or Try Something Else First?

I have a 2012 Mercedes Sprinter 2500. I had a no start morning a couple times in the last few weeks and finally the battery would hold no charge. I took it in and was told it came back as need to ...
0
votes
0answers
17 views

Alternator amperage to charge 3 batteries

I have a 2009 accord sedan, with a sound system installed. How many amps should my alternator be to charge my 3 batteries? My OEM alternator currently puts out 130.
0
votes
0answers
5 views

Mazda DP alternator problem Replaced regulator now car swings but doesnt start Seems like no spark

ECU controlled alternator Could it damage ECU if the pin was left in the brushes after assembly? After new DP regulator was fitted car has no spark.
1
vote
1answer
34 views

12v starter battery True amps available why volts come back so fast by running engine 5 mintues?

The OEM start battery on my new van is 70AH, 120RC. I have a 12v freezer that consumes about 3amps @ 12v. It takes the freezer about 6 hours to freeze a gallon of water. My battery is not a deep ...
1
vote
0answers
6 views

Exciter Circuit Oddity

When doing a timing Belt job in my 1987 Porsche 928, we cleaned up the engine bay and made sure the electrical loom associated with T18 (an under the hood terminal connector) was routed and secured ...
0
votes
1answer
16 views

2001 Crown Victoria alternator exiter wire

My 2001 Crown Victoria appears to have a short somewhere in the harness which is going to be hard to find. As a temporary fix - can I connect the alternator exister straight to the battery? Is it ...
2
votes
1answer
50 views

2002 Subaru Legacy GT - New Alternator, Battery Light Stays On

I recently had to replace my alternator as the one original to the car died after 180k miles. The new unit is a Subaru re-manufactured alternator purchased from the dealership. The original failure ...
0
votes
0answers
26 views

alternator overcharging

I had a bad TPS on my 2009 Montana. I replaced it with a used scrap-yard TPS and the car runs great now. However, now my dashboard meter reads 15v. It's the uper limit, but it used to be 14.2v ish ...
0
votes
1answer
44 views

Problem with starting a car

I had a problem 7 days ago: I could not start my car. Temperature on that day was -17 (-27°C ). I heard just 1 click and that's it. One day later it was 32F (0°C) and I could start the car. I could ...
1
vote
1answer
24 views

Isolator or Separator for my Hitachi alternator

I am looking to charge an auxiliary battery for my motorhome, but am not sure if I can use an isolator given the alternator. It is a Hitachi LR160-78B 60a alternator in a 1985 Nissan 720 pickup (...
1
vote
0answers
33 views

Dual alternator setup that is separated one alternator and battery runs the truck one alternator and battery runs the audio system

Hey guys I'm JD and I've got a 2008 Chevy Silverado extra cab 4 by 4 flex fuel truck with a 5.3 l vortec I have added a second alternator and second battery!! Separated the way this thing works the ...
0
votes
1answer
45 views

I accidentally hooked the negative side of the battery up firstand the wire running to the alternator started to smoke

I accidentally hooked up negotiate cable to battery first causing the wire running to the alternator to smoke. I quickly unhooked it and hooked it up positive side first. But now my car won’t stay ...
0
votes
1answer
45 views

Is a 13.07V alternator voltage too low?

I'm having some problems with a 2006 Mini One D (1.4 l diesel engine). About a month ago the alternator warning light turned on (it only turned off over about 4000 rpm). The belt looked good, so I ...
0
votes
1answer
20 views

S10 won't start

I have a 2002 s10 that won't start. I had work done to repair an oil leak, drove it home, and it died. Thought it was maybe the battery, which had, in fact failed. I replaced the battery, and it ran ...
1
vote
1answer
28 views

1990 F-150 Eating Alternators

My old truck has a problem with zapping alternators. It's a 1990 F-150 with a 5L V8. Specifically, I believe the voltage regulator is going out. Giving it a lot of gas seems to always be the event ...
2
votes
0answers
39 views

Battery dead. Why won't my car start when jumped?

I have a 2007 Lexus ES350 with about 185K miles on it. I've owned it for about 14 months, never had a problem. Over the past couple of days it was sitting parked in my garage. I'm not sure, but the ...
0
votes
2answers
214 views

What is wrong when the car dies after you take off the jumper cables on a 2010 Kia Optima?

What is wrong when the car dies after you take off the jumper cables on a 2010 Kia Optima?
1
vote
1answer
73 views

Camry new alternator and battery, car wont start

I have a 2003 toyota camry xle, recently the car has died after the battery light came on. the battery read 12.5 volts and after jumping the car and removing the battery it died suggesting the ...
1
vote
1answer
37 views

Starter motor or Alternator?

Can anyone offer any advice? Got in my car on Monday and it was dead. I turned the key and there was no noise at all, but all the lights etc came on. No clicking or anything. I got a jump start and ...
1
vote
0answers
350 views

New alternator whining?

I have a concern about a new alternator I put on my 02 echo, again it too does not have a tensioner. Belt tension is created by pivoting the alternator away from the engine. This was the first time ...
1
vote
2answers
48 views

Boat Alternator Charging 4 Batteries 70 Amp Draw 50 Amp Charge

This is the current situation, looking for some expert advice. Total amp draws with night time running lights + GPS + other accessories I am at about 70 amps. My alternator puts out max 50 AMPS ...
1
vote
1answer
107 views

Voltage measurements with the alternator running fluctuate

I own a 1994 Mazda Protege. On Sundays, I measure the voltage at the battery terminals, and register it. First with the car turned off, and then with the car idling. The voltage with the car turned ...
2
votes
0answers
53 views

Alternator voltage constant with revs and battery light on

I recently installed a new aftermarket alternator in my 2006 Lexus is250 and checked the battery to make sure it was good. After installation, the charging system warning light is on and I can't ...
0
votes
1answer
40 views

Alternator issues?

I have a 2005 GMC with a 5.3 vortec engine. The alternator failed and I replaced it with a used one out of a previous GMC I still own. It would not charge more than 12.45 volts below 1000 rpms. At ...
2
votes
1answer
113 views

Is it possible to charge a small auxiliary battery with the alternator?

I want to charge a small 22AH AGM auxiliary battery just to turn on some light signals. I would like this battery to be charged by the alternator while the car is running. The problem is: the battery ...
1
vote
1answer
34 views

Alternator misconnected, what adverse affects

Spent the night and the very early morning in the garage changing the clutch on my wife’s 1997 Mk3 Golf GTI 8V 2.0. She’s called me saying the battery light is staying on. When I’ve thought about it,...
1
vote
1answer
54 views

Could installing a 12V radio on a JDM Simpa damage the battery and alternator, causing the alternator to put out no charge?

I am a Canadian living in France. I bought a "voiture sans permis" (JDM Simpa) for my son to go to and fro school... It is essentially a very small motor vehicle which can only go up to 80 km per hour....
3
votes
1answer
51 views

can a brand new car battery cause my alternator to fail?

My battery cavity filled with rain water due to a leak in my tail light of my 328i bmw wagon, and when my mechanic replaced the battery he said the new one was putting out too may amps and then fried ...
1
vote
2answers
63 views

Is it normal for car battery to drain this fast or is something causing this?

My i10 ever since i got it years ago had battery problems. If left for 4 days after a short trip, it discharged enough to not start again without jump starting. If long trip then expect 2 weeks. Is ...
1
vote
2answers
296 views

Causes of 2012 Honda Civic alternator not charging battery unless headlights are on

What are the possible causes of a battery charging only when the headlights are on in a car with both a new battery and a new alternator? A couple months ago, my 2012 Honda Civic LX wouldn't start ...
1
vote
0answers
32 views

Wire loom clip behind Lexus alternator has little play

I was following along this lexus alternator replacement tutorial, and at 12:32, the guy uses a 10mm wrench to release the clip on the alternator L bracket very easily. I used his trick with much ...
1
vote
1answer
40 views

Considerations when handing over botched DIY alternator/electrical repair to a mechanic

I tried following an in depth guide my my exact car for replacing an alternator. I intended to first replace alternator brushes, and then replace the alternator if brushes were not sufficient. After ...
2
votes
0answers
39 views

Alternator charging light on, turned itself off after about 15 minutes of driving

I just picked up a 98 Explorer XLT that had been sitting unused for about six months. I had to drive it from the SF bay area to Orange county, which is about a 400 mile drive. When I first started the ...
1
vote
0answers
29 views

Briggs alternator identification

These are pics of the alternator, yes I have looked at the Briggs guide, the most similar one I’ve found is the 397880 but this does not have the capacitors on it. I’ve spent hours looking so maybe ...
3
votes
0answers
190 views

Hyundai Accent 2013 Battery/Alternator Issues

I have a 2013 Hyundai Accent Hatchback. I have had a recurring issue with either my battery or alternator. Here is the history of the problem: About a year and a half ago, the battery died while ...
3
votes
1answer
74 views

'91 Toyota Celica GTR (ST183) charging diagnosis

I've been working on getting a Celica up and running after a couple years of laying mostly idle, it's been dry-stored for most of it. The biggest issue I have right now is that the system is not ...
0
votes
2answers
66 views

Could a wind turbine work for a car?

Could I attach a little fan to power a motorcycle alternator to be more efficient then running off the engine? Attach any where facing the wind on the vehicle to increase mileage from eliminating ...
1
vote
1answer
73 views

Alternator regulator gone bad 3x in one day

I have a 2008 Toyota Camry 2.4l. My problem is battery is over charging causing amplifier ground wire to blow fuses and also melt the wire, battery tested it is good. Tested alternator and tested bad ...
1
vote
1answer
94 views

Could a car be slowed by the drive shaft?

Could enough electromagnets be place around the drive shaft to slow a car and generate electricity? Or a switch that would engage electromagnets going down hill? When you apply the brakes the drive ...
0
votes
1answer
47 views

1986 Nissan D21 Connector Part

What is this? As a hint, I'm losing about 2 volts between the alternator and the positive terminal of the battery here. It appears to be the last connection on the way back to the battery, just after ...
2
votes
0answers
119 views

2002 Subaru Impreza WRX alternator/charging issues

I have 2002 Subaru Impreza WRX. The alternator went, so I replaced it. The voltage gauge was jumping up and down when fans kicked on and when I turned on accessories. I figured the alternator was ...
3
votes
0answers
2k views

Intermittent battery light on 2005 Accord

I have a 2005 Accord LX 2.4L w/ 101k miles and a few weeks ago, the battery light came on. The battery was changed last year. After checking everything, I concluded that it was a bad alternator, so I ...
1
vote
2answers
353 views

Can a new AC kill the alternator and the battery?

11 days after Sierra Shell mechanics repaired my trucks AC system, truck displays warning symbols on dash and suddenly loses all power. My neighbor looked at battery and adds water to 2 dried cells. ...
2
votes
2answers
32 views

Car chugs along after jump start but no lights work

Today I was leaving work and my car didn't start so I had it jumped by a coworker. I was driving on and noticed that my gauges weren't working and my lights weren't turning on. It also chugs along and ...
3
votes
3answers
177 views

Car starting hack works - but is it an issue with car battery, starter or alternator?

I recently noticed that my car had the issue starting without giving it a boost. It has original battery and has 155k on it. Over the course of 2 weeks I realized below two things which helps car ...
0
votes
2answers
56 views

Alternator on a boat generating 90Amps for three batteries ACR system

After several hours of thorough research, I still haven't found a satisfying solution to my problem. My electrician bought a 90 amp alternator for my boat and I count on charging three batteries ...
0
votes
1answer
67 views

I have a 2015 Kia Forte I have put two Alternators on it within the last 2 weeks why do they keep failing?

Alternator failure: have put two Alternators on within the last 2 weeks second one just failed again what seems to be the problem dealerships it has to be something other than that alternator do you ...
1
vote
1answer
107 views

How likely it is that low alternator voltage cause Xenon HID headlamps ballast to fail?

It seems that the alternator is producing a bit low voltage, about 13.4V max, while this should be over 14V AFAIK, undercharing the battery. The left Xenon HID headlamp ballast failed some time ago, ...
2
votes
1answer
122 views

Ford not starting on key turn after acc

I've got a mk3 Mondeo 1.8petrol zetec. It had bad alternator so I left it laying up for 6 months until I got around to getting a new one, but 3 weeks ago with the bad alternator in it, I started car ...
1
vote
0answers
30 views

20.2 volts on the B+ terminal of a12v alternator.

The engine on my sailboat has an Iskra 12-volt alternator that has worked fine for over 3,000 hours of operation. Just recently, I noticed that the voltmeter shows no charging, ie, only about 12 ...