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Alternator not getting fire from it could it be the wire on back corroded and black that's the power wire need clean or. Watt

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If the alternator quits generating electricity it usually needs to be rebuilt. Either it needs brushes or it has a built in voltage rectifier that needs replacing etc.

Posted on Nov 17, 2013

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  • dustin m
    dustin m Nov 17, 2013

    It's new

  • dustin m
    dustin m Nov 17, 2013

    It's newthird one I'm just not getting eltricitiy to my batt

  • dustin m
    dustin m Nov 17, 2013

    It's newthird one I'm just not getting eltricitiy to my batt from alt

  • mikadot
    mikadot Nov 17, 2013

    ok then you likely need the voltage regulator replaced (if it is not built into the alternator) or you have burned a fuseable link

  • dustin m
    dustin m Nov 17, 2013

    Could it be the black power wire on back of alt corroed and black the reason I get no power from it

  • mikadot
    mikadot Nov 17, 2013

    Try faning the wires out and scraping with a knife to clean the oxides off and crimp a new crimp on... but i bet the problem is further up

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Yes! if not a corroded lead, then more than likely a bad voltage regulator. A rebuild shop will usally have the parts on hand for brushes/regulator etc. I would take it out and take it to the shop and have them do a bench test. a break in the winding is something they will also be able to detect.

Posted on Nov 17, 2013

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My car keeps surging wanting to die after it starts up


Common Problems That Trigger the P052 Code
  • Defective Alternator
  • Defective Alternator wiring or connector(s)
  • Defective B+ battery cable from Alternator to battery
  • Poor Charging System ground(s)
  • Defective PCM wiring/connection to Alternator
  • Defective PCM
  • Defective Voltage Regulator
  • Large Parasitic battery drain
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Common Misdiagnoses
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Check the condition of your battery cables - are they corroded/have broken wire strands? Also check where the negative battery lead attaches to the engine/bodywork.

Check all the wiring for breaks and tightness - a small earth wire can be loosened and retightened to create a better earth. Corroded power wires can struggle to supply the correct voltage - remove and clean whatever you can find.

It's unlikely to be your alternator as you say it has been checked - the voltage regulator is built into the alternator so it must be okay.

A parasitic drain can be difficult to find. Try switching off everything - radio, heater ... the next time you start the car. If you know somebody who has a voltmeter and knows how to check for a power drain .. ask them.

The link below shows a Saturn PCM (it may not be your actual model..). Check all wiring around the PCM

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The battery has tested fine, the alternator is fine. But it won't start or hold a charge.


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Battery light and brake light come on and lights dim and engine run rough thinking alternator but want to make sure does any body know?


It sounds like it to me too. If your car has separate belts on the front and not a serpentine belt, try tightening the belt for the alternator before you buy a new one. Belts stretch over time and need to be adjusted, if there is no adjustment left it is time for a new belt. Also make sure the wires on the back of the alternator are tight and not corroded ( greenish colored). Clean them up with some emery cloth and re attach. Do them one at a time so you don't get mixed up. Hope this helps.

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4 Answers

No battery recharge


Yes, you would need to inspect for loose wires, etc. Also, consider pulling the alternator and get it bench tested.

Typically what fails are called DIODES. These are one way valves for electricity. They fail, eventually and cause a drain to ground. There are ones dedicated to firing off the regulator. My guess would be this area.

More commonly a problem with the alternator, less with wiring, but anything is possible. Bench test will help you to know...

Doc

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1 Answer

The plug that connects to the alternator has three


Yes the White wire is the reason. It goes to the Internal Regulator.
As you view the connector that plugs into your alternator, look at where the lock tab is.
Lock tab on TOP. The Black wire goes to the Left side. The White wire goes to the Right side.

The Black wire, ties into the Red wire down in the wire loom. (The Red wire goes to the starter solenoid, and this is connected straight to the battery. This is why the Red, AND the Black wire, are both Hot wires)

The White wire goes through the bulkhead wire loom, and to the bulkhead connector.

(Down under the steering shaft, and on the firewall, you'll see a rectangular Black box shape, with a Bunch of wires, coming into it from the engine compartment. The bulkhead connector is two pieces. Following it through the firewall, the other side of it is the fuse panel)

Where the White wire connects in the fuse panel,
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Need to find the fuse block to check power failure to starter


If this is a automatic there is a wire (yellow possibly) that runs to the back of the engine to the starter there is a connection somewhere on this wire that will allow you to pull it apart, it may be corroded at this connection which is a common problem. If its a standard the starter is in the front of the engine, same thing there is a wire that runs to it from the fire wall this wire for both trany's is your trigger wire when you turn the key to start it powers this wire to your started engaging it. Also it may be corroded at the starter check all connections even the main power cables for the starter if they look green or white you will have to pull the wire off and clean the terminals well.

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9 Answers

2002 Hyundai Accent lost power


Hi and welcome to FixYa,

Offhand, definitely an electrical issue. Some ideas to check, consider and/or explore:
  • IGN switch - check for loose, corroded or heating connections. To test, under normal usage of the vehicle, should feel warm but not overly hot. If so, then possibly loose connection;
  • fuse/relay box - check for loose, corroded or burned terminals, holders, clips and connectors/pins. Use an electrical contact cleaner and spray. It may also be necessary to scrape to remove burnt marks/corrosion;
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Good luck and Thank you for using FixYa.

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2 Answers

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