Question about 1999 Nissan Altima

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Electrical problem after changing alternator

I had forgotten to disconnect the battery cable before taking out the old alternator. I accidentally arced across some metal, then removed cable. Now after the new one is in and I started the car, I have no warning lights on the dash, no tach,wipers, power windows, blower motors, and interior lights. I still have radio and headlights though. I've checked every fuse I could, including the main fuses, with a tester and none were bad. The car does stay running, but when I put my volt meter on the alternator it reads less than 1 volt. The altrnator I was replacing had just been installed 4 days ago, when my warning light on the dash came on again. When I tested the old one(4 days old) before removing, the voltage was fluctuating from less than 1 volt, up to about 11.5 volts, but never holding at the high end for more than a few seconds. When I told the guys at the parts store this, they just gave me a replacement. What could be wrong?

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  • david_davemo Jul 09, 2010

    Did you take the fuses out of the fuse block to test them?

  • rtgeurts Jul 09, 2010

    Yes I did.

  • rtgeurts Jul 10, 2010

    Problem is solved. The only fuse that wasn't tested was the 100 amp battery fuse, because I couldn't just pull that one out without pulling apart the fusebox it was in and removing some screws. I also assumed that the car would not run if that one had blown. Wrong. Less than a $4.00 fix.



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Posted on Jan 02, 2017

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SOURCE: Going through alternators

Hi there, I am a girl (i.e. not car savvy), but I have a 1998 Altima as well, and the first time (4 months ago) I noticed the brake and battery lights on simultaneously, I took it to a Nissan service shop. Everything seemed fine until about a month ago when the symptoms returned. I ignored the problem for 3 days and the car just stopped running, period. Took it back to the shop, figured out it was a fauly alternator, got it sorted, no problem. Today (1 month after replacement), I see the same bloody problem, and I'm taking it back to the shop in the morning. I am wondering... is it the alternator, or something connected to the alternator that is malfunctioning? The 2 alternators put in were "rebuilt" since they didn't have genuine Nissan alternators available. I really hope the dealers aren't taking me for a merry ride.

Posted on Sep 17, 2010

  • 458 Answers

SOURCE: 2010 chevy traverse air conditioner

The two problems are more than likely related. Solve the voltage problem and the blower problem will disappear. Check for a slipping belt or an intermittent internal problem with the alternator. There could also be a wiring issue.

Posted on Jun 16, 2011

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Alternator changed, now car will not start

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1998 olds bravada would not start. Tightend the battery cables and it started. Now the battery light is on and the volts are down to 9. The car will start but scared that it might cut off of me. Is it...

If tightening the battery cables helped but did not fix, you may need to take the cables off and clean all the connections. If there is enough corrosion, it causes enough resistance to lower the voltage. Take the connections off and clean the cable and battery with a wire brush. Apply a coat of grease and put it back together. If this battery is a post type there are cleaning tools that have a post cleaner and a brush the will clean the inside of the cable clamp. You can find there at most any place that sells car batteries. They are cheap and well worth having. If it is a bolt on connection you should be able to clean with a regular wire brush. Clean until all the metal is shinny. There are also some spray cleaners available. When you disconnect the battery, always disconnect the positive post first. This ensures that you don't accidentally touch the cables and cause a short. Reverse the procedure when you reconnect the cables. If this doesn't help, have the battery checked. Good luck.

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I need to change the generator on a 1999 pontiac bonneville

Don't you mean an alternator?

It is a straight forward proceedure that is relatively easy to do. Sure take you about 30 minutes if you are halfway mechanical. A couple of sockets and open end wrenches.

Would suggest you change your serpentine belt at the same time (if it hasn't been changed in the last year) since you will also have to remove that to change the alternator.

The alternator keeps the battery in your Pontiac going, constantly recharging it as you drive. The battery will quickly drain if the alternator is bad, so it must be replaced in that case. The alternator is mounted in the engine and naturally connected to the battery in all models, but other components could be in its way depending on the type of Pontiac you own. This will determine how difficult such a replacement will be.
Difficulty:Moderately Challenging Instructions

    • 1 Open the hood and disconnect the negative cable from the car battery.
    • 2 Remove the drive belt by rotating the belt tensioner with a wrench to relieve the tension, slipping the belt off while applying pressure from the wrench. Depending on the model, other components might need removal, like parts of the air cleaner (Grand Am and G6), the fuel injector sight shield (Bonneville) or the coolant recovery reservoir (Grand Prix).
    • 3 Disconnect any wire clamps that are on the clip at the alternator's end frame, then remove the rubber clamp and nut. These extra fasteners are not on all Pontiac models. Disconnect the electrical connector for the alternator. Remove the alternator by disconnecting its bolts.
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Read more: How to Replace a Pontiac Alternator '

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How to change the alternator on a 1991 amigo

Here are some steps that you need to do.
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  • Remove drive belt.
  • Disconnect alternator electrical connector.
  • Disconnect battery positive cable nut on alternator.
  • Remove alternator
  • Put the new alternator
  • Connect the positive cable nut and electrical connector
  • Connect the battery ground cable
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How to fit a alternator belt on a ford focus 16.00 can you send me a pick

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Simply follow the steps

Disconnect the battery's negative cable and set it aside where it can't accidentally snap back onto the terminal.

Remove the car's accessory drive belt. Disconnect the belt shield by removing its two 10-mm bolts, push up on the tensioner by hand, pull the belt off the air conditioner or water pump pulley and remove the rest of the belt. Take note of how the belt loops around each pulley.

Open the cover containing the alternator's electrical connectors and disconnect them. Remove the bolt on the coolant expansion tank then detach the tank from its clip and secure it away. Detach the power steering reservoir, engine wiring loom bracket, ground cable and evaporative emission canister purge valve.

Unscrew and remove the alternator's first bolt on its right side. Unscrew the second bolt on the left and disengage it fully from the bracket; it cannot be removed from the alternator. Remove the alternator from the engine.

Install the new alternator, placing the built-in bolt within the bracket and tightening it first. Insert and tighten the second bolt.

Replace all other objects set aside in the reverse order they were detached. (evaporative emission canister purge valve, ground cable, engine wiring loom bracket, power steering reservoir and coolant expansion tank). Plug in the electrical connectors and replace the cover over them.

Replace the accessory drive belt. Loop it over all the pulleys except the one on the air conditioner. Retract the tensioner upwards as you did before to fit the belt on the A/C pulley.

Reconnect the battery cable.

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1 Answer

Batterie light stays on after changing alternator

The yellow wire in your Alternator plug Have a "Fuse Link" at the starter relay. If that fuse link is bad the alternator will not charge. To test jump the yellow wire with the hot wire at the alternator and if the alternator is new it should charge. Check and install the fuse links.

Other details that you can try:
First ensure your battery terminals are clean and free of corrosion. Make sure you use a battery tool to clean them up to ensure a good connection. reconnect and tighten.

NOTE: Some electrical systems need to have the system computer reset after changing an alternator. If you changed the battery first, then changed the alternator, this may not have happened. Sometimes it's as easy as fully disconnecting both terminals and reconnecting the battery.
Check the voltage from the positive terminal of the battery to the negative terminal on the battery(record this).

Then check voltage from the positive terminal of the battery to where the negative terminal connects to the block. if this reading is lower your negative battery cable may be the problem. I've had them crystallize before from age so badly that they lost flexibility and began breaking internally. Replace it.

Then check voltage from the smaller positive cable post on the alternator and the negative terminal on the battery. If this is lower the smaller cable may be the problem. Replace it.

Then check voltage from where your positive cable hooks up to the solenoid and to the negative terminal on the battery. if this is lower your positive battery cable may be the problem. Replace it.

Charge the battery fully and take the vehicle to a local auto parts store and see if they can run a charging system test (usually a free service). They should be able to tell you what kind of shape your battery is in and the alternator output. A good alternator will put out 14+ volts, if it's putting out 12-14 volts it's wearing out and needs replaced.

If your alternator is putting out 10-10.5 volts or less means one of the diode pairs are bad, 5-5.25 volts or less 2 diode pairs are bad. Either way the alternator is not charging the battery and it's the fault of the voltage regulator.

Ask the person doing the test if he can tell you what the field voltage is on the alternator. If they can and it is around 12 volts or more you can probably bypass the next test.

Start the vehicle and hold a steel tool near the back of the alternator (not on the pulley side). It should be drawn magnetically to the center of the alternator. If it doesn't your alternator is not generating the magnetic field needed, to generate electricity. This could be due to a bad alternator or wiring.

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With connector disconnected, if the voltage is less than 12volts or non-existent, it's a wiring problem. - With connector disconnected, if it is 12 volts or above it's probably the alternator (Bad windings.)
Set the multimeter to Ohms. Touch probes together and calibrate the needle to zero on right side of meter readout. (If the needle does not move to the right, you may need to replace the meter's battery or fuse). With the Alternator connector disconnected check the resistance of the alternator at the connector blades. If the needle goes to infinity, there is an open circuit in the windings. Replace the alternator.

Other things that can cause charging system problems:

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Hope this help (remember rated and comment this).

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1 Answer

Change alternators

2.0L (VIN N) & 2.3L (VIN Z) Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Remove or disconnect the following:
    • Negative battery cable
    • Upper alternator mounting nut
  3. Raise and support the vehicle.
  4. Remove the accessory drive shield.
  5. Release the tension and remove the accessory drive belt from the alternator pulley.
  6. Release the two air intake tube retainers and remove the air intake tube assembly.
  7. Remove and discard the generator B+ cable nut and disconnect the B+ cable.
  8. Remove or disconnect the following:
    • Alternator electrical connector
    • 2 alternator nuts and bolts
    • Engine roll restrictor mount bolt
  9. With an assistant, position the engine forward and remove the alternator from its mounting.
  10. Remove the lower air duct and remove the alternator.
  11. Remove the radial adapter (B+ connection extension).
To install:
Install or connect the following:
  • Radial adapter to the alternator
  • Lower air duct
  • Alternator; tighten the 2 bolts and nuts to 35 ft. lbs. (48 Nm)
  • Alternator electrical connector
  • Alternator B+ cable and new nut
  1. Reposition the engine. Tighten the engine roll restrictor mount bolt to 35 ft. lbs. (48 Nm).
  2. Install or connect the following:
    • Air intake tube and retainers
    • Accessory drive belt
    • Accessory drive belt
  3. Lower the vehicle.
  4. Install the alternator upper mounting nut. Tighten to 35 ft. lbs. (48 Nm).
  5. Reconnect the negative battery cable.

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2 Answers

How do I change a 2005 mustang alternator? NOT gt

2005 Ford Mustang 4.0L SFI SOHC 6cyl
Ford Mustang 1999-2005
Alternator - Removal & Installation

3.8L And 4.0L Engines
  1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
  2. Disconnect the negative battery cable.
  3. Remove the accessory drive belt.
  4. Disconnect the alternator electrical connectors.
  5. Remove the alternator shield (4.0L engine).
  6. Remove the alternator mounting bolts.
  7. Remove the alternator from the vehicle.
  8. Installation is the reverse of the removal procedure.
To install:
  1. Position the alternator onto engine. Tighten the lower bolt to 35 ft. lbs. (47 Nm) and the upper bolt to 18 ft. lbs. (25 Nm).
  2. Install the alternator shield (4.0L engine).
  3. Connect the alternator electrical connectors.
  4. Install the accessory drive belt.
  5. Connect the negative battery cable.

4.6L Engines (Non-Supercharged)
  1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
  2. Disconnect the negative battery cable.
  3. Remove the air intake scoop bracket, if equipped.
  4. Remove the accessory drive belt.
  5. Remove the upper alternator bracket.
  6. Disconnect the alternator electrical connectors.
  7. Remove the alternator bolts.
  8. Remove the alternator from the vehicle.
  9. Installation is the reverse of the removal procedure.
To install:
  1. Position the alternator onto engine. Tighten the mounting bolts to 18 ft. lbs. (25 Nm).
  2. Connect the alternator electrical connectors.
  3. Install the upper alternator bracket. Tighten the bolts to 89 inch lbs. (10 Nm).
  4. Install the accessory drive belt.
  5. Install the air intake scoop bracket, if equipped.
  6. Connect the negative battery cable.
4.6L Engines (Supercharged)
  1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
  2. Disconnect the negative battery cable.
  3. Remove the accessory drive belt.
  4. Raise the vehicle.
  5. Disconnect the alternator electrical connectors.
  6. Remove the alternator bolts.
  7. Remove the alternator from the vehicle.
  8. Installation is the reverse of the removal procedure.
To install:
  1. Position the alternator onto engine. Tighten the lower bolt to 18 ft. lbs. (25 Nm) and the upper bolt to 37 ft. lbs. (50 Nm).
  2. Connect the alternator electrical connectors.
  3. Lower the vehicle.
  4. Install the accessory drive belt.
  5. Connect the negative battery cable.
  6. Installation is the reverse of the removal procedure.

More details about this model in (free register).

I hope help you with this (remember rated this help). Good luck.

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2 Answers

How do you install altenator

Disconnect the battery first and formost.
Then disconnect the electrical plug on the old alternator.
Take off the serpentine belt.
Unbolt the old alternator off the engine.
Bolt new Alternator on engine
Re-install serpentine belt
re-connect the electrical plug.
Reconnect battery.
All Done.

Aug 09, 2009 | 1996 Dodge Avenger

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