Question about Cars & Trucks

2 Answers

What is the right output from alternator. My is charging 15.0.Is that to much or it is ok

Posted by on

Ad

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Cars & Trucks Master
  • 2,428 Answers

No you should be fine anything between 13.5 and 16 volts is good it works

Posted on Apr 21, 2015

Ad
  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Cars & Trucks Expert
  • 243 Answers

Should be between 13-14 volts is that reading your dash gauge is putting out if so i would check it with a volt meter dash gauges are unreliable they are never calibrated and are usually there for operator reference

Posted on Apr 21, 2015

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Vehicle over-charging


the ecm does regulate the alternator output. The problem could be in the wiring or the ecm.

Jan 26, 2014 | Dodge Ram 350 Cars & Trucks

1 Answer

I have a 2002 pontiac Aztek. In cold weather it wont crank unless I put it on a battery charger. I bought a new battery and the same thing happened.Put the old battery in after cleaning the neg.cable(was...


Has your alternator belt broken or alternator not charging the batteries? Check amps output from the alternator aswell it maybe undercharging them. Make sure all battery connections and earths are clean and their mounting points are clean. Is it the correct battery for the car?

Dec 17, 2013 | 2001 Pontiac Aztek

1 Answer

My car keep going dead its a 2002 lincoln ls,with new battery new alternator,it start with the radio then lights,then the car goes out


THE ALTERNATOR PERHAPS IS NOT CHARGING. THE OUTPUT FOR THE ALTERNATOR SHOULD BE 13-15 VOLTS RUNNING.

Oct 25, 2013 | 2002 Lincoln LS

1 Answer

Charging system


the charging system consists of the battery and the cables , ,alternator and its wiring. the battery must be good charged and clean connections. the alternator should output 13.5 to 15 volts. the heavy lead from the alternator should be connected to pos cable on battery

Oct 06, 2013 | Chevrolet Corvette Cars & Trucks

1 Answer

Battery will take a charge from a charger, but will not charge from driving. Alternator is ok


the alternator charges the battery thru the heavy lead on the back of the alternator that goes to the battery. make sure it is clean and tight. the alternator output should be 13-15 volts with engine running.

Apr 16, 2013 | 2002 Lincoln Continental

1 Answer

2nd newly rebuilt alternator burning out.


Due to the nature of the battery technology used with vehicles the alternator is mostly incapable of charging the battery. The car alternator is designed to keep a fully charged battery fully charged and to provide all the power for the car equipment.

The alternator charge rate is regulated by a voltage regulator. Because the alternator output is connected to the battery, the alternator and battery voltage will be the same and the voltage regulator monitors that voltage.

The lower the battery voltage the more output the alternator will produce in order to correct the situation but because a lead acid battery has a high internal resistance to accepting a charge the terminal voltage will quickly rise to the alternator regulated voltage and fool the alternator into thinking the battery is fully charged when the output will drop to the order of just a couple of amps.

Switch on the headlights or a similar load that will lower the battery voltage and the alternator will increase it's output again - but only by the amount of current the headlamps or other load is consuming.
It matters not what the alternator rated maximum output is, it is designed to provide only the necessary current and no more.

The only time an alternator should ever need to produce maximum output is when on a dedicated testbed and then only for a short duration to avoid damaging the unit. Testing the current output on a modern vehicle is not recommended except for the regulated voltage testing and a rule-of-thumb output test where all equipment is switched on and the engine speed raised while the battery voltage is monitored.

Most modern alternators use an internal voltage regulator but a few systems use a separate voltage regulator. No alternator rebuild would be complete without a regulator test and probably a new or replacement regulator, which is where the majority of charging system problems are, or the brush gear.
Assuming the wiring is ok, no alternator should suffer any harm if the voltage regulator and auxilliary diodes (if fitted) are in good order though fitting a defective or a discharged battery can cause it to overheat and be damaged.

The alternator usually just about stops producing an output when the battery voltage is in the region of 14.5/14.8 volts.
Your description indicates the voltage regulator is not working correctly - unless 40 amps was being consumed by the car equipment the alternator should not have been producing 40 amps.. I suggest you also have your battery tested

May 12, 2017 | 1988 Acura Legend

2 Answers

I have a 95 isuzu rodeo v6. it was having trouble starting. today it would not start. battery/brake light came on. found out starter was bad, replaced it. the light is still on and after replacing starter...


possibly wrong termination of wires @ alternator.

to drop off a battery cable is one old and reliable way to check charging system. if belts are tight and wiring is correct it is time to put a meter to alt and verify output voltage is within acceptable ranges.....

Nov 01, 2010 | Isuzu Rodeo Cars & Trucks

1 Answer

2001 ford windstar battery being drained and i dont know why


I had this problem. i thought it was a parasitic drain but...
check your charging system. with the van running, check the voltage output accross the battery terminals. if its less than 14.1 check the inline fuse for the alternator (close to the alternator) if ok, replace the voltage regulator inside the alternator.

if the charging system is putting out 14+ volts then you need to start pulling fuses while van is off while monitoring the current draw between the positive battery post and the positive terminal clamp watching for a current drop. keep in mind the windstar will drain alot of current while off for the first 2 mins er so, then it will drop again in about 15 mins... time delay shutdown on several systems :)

May 01, 2010 | 2001 Ford Windstar

2 Answers

Battery goes dead. disconnect the battery and jump the car and it is ok for about a month


Get a battery check first and have it charged. Then, switch off all lights, radio, ignition switch. Reconnect the charged battery negative ground first, then, the positive terminal. Find if there's a spark. if it does, then, you must check your electrical wiring since this is grounded. Do not connect the positive terminal. Clear the grounded connection first. If no spark, go ahead. Crank your engine, and let it run at neutral position. And check the voltage that goes out of the alternator, this must be more than 15 volts DC. Then check the voltage output of the regulator which must be 13
to 14 volts DC. However, if you cannot get the right voltage at the
alternator., you have to replace it. Then, you can check the regu-
lator output voltage, and get the right voltage. Get this done,. and
send your e-mail for the result.

Oct 04, 2009 | Cadillac DTS Cars & Trucks

2 Answers

Battery light on


It is possible that the extra demand placed upon the charging system finally blew the alternator.
You need to have the charging system checked,,or check the output yourself with a volt meter (should be around 14-15 volts) test must be done with the car running.
If the voltage reads up to 14 or 15 volts then it would indicated a short in the dash control circuit.

Jan 30, 2009 | 1990 Pontiac Bonneville

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

26 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

76846 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Randy Ohler

Level 3 Expert

14585 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...