Question about Nissan Sentra

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'89 Nissan Sentra: New alternator does not work. Have a good belt properly installed, fully charged battery. Do you know how to flash the alternator to get it to work?

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  • Natalie Baumgartner Aug 30, 2010

    I'm the wife...being the "middle-man" in this conversation. He says that it's a brand new alternator out of the box and that there is only one way for the wiring to be hooked up. (We live hundreds of miles - air only, in Alaska- from the nearest service dept, by the way, so cannot take it in to be professionally tested or have the car worked on.) He didn't know about the magnetic testing, so will do that and of course, has a voltmeter so can test that, as well. Busy today, but this is one of the projects that is perpetually being worked on by him and our sons...until they finally get the problem solved. Thank you for the advice. He may have more questions in a bit or tomorrow if you're on line.

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First off have you had the alternator tested to make sure it is good? Have you connected all the wiring correctly? I would test to make sure the alternator has magnetism when its running, you can do this by touching a screwdriver, if it is charging the bearing cap in the center of the rear of the alternator will be magnetized. You may need to use a voltmeter and test the output.
Thank you,
Lee

Posted on Aug 30, 2010

  • Lee A.
    Lee A. Aug 30, 2010

    I look forward to hearing back from you. In the meantime Good luck!
    Thanks again,
    lee

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94 Nissan sentra will not charge battery but wit car off battery reads 12 Volts then when u fire it up the volts drop down to 11.76 can't find any thing to solve this what s the problem


First, check the belt that runs the alternaotor, make sure it is'nt slipping...

Then have the alternator checked out, this is probably your culprit; as the alternator slowly wears out, it will still send current, but not at the peak performance. if the alternator checks out fine, inspect wiring harness to make sure all connections are good.

Jun 08, 2012 | Cars & Trucks

1 Answer

How many labor hours will it take to install a new alternator in my jeep grand cherokee?


How to Replace an Alternator (DIY Time: 2.5 hours)
Complexity: Moderate

Parts:
1. Alternator - $151.95

Tools:
1. Combination Wrench Set
2. Screwdriver
3. Multimeter
4. Serpentine Belt Tool
5. 3/8 in. Drive Ratchet
6. Socket Set

Steps:
Step 1 Open the hood and locate your vehicle’s alternator.
o Tip: Safety Tip:Always wear safety glasses when working on your vehicle. Wear other personal protective equipment (PPE) when necessary, for example latex gloves or safety shoes.
o Tip: Always make sure the struts on the hood can fully support the weight of the hood so that it does not close on you while working. The use of a hood prop can securely hold it in place.

Step 2 Using your digital multi-meter, check the battery voltage. A dead battery will usually have less than 9 volts. This would not be enough power to start most vehicles.

Step 3 To verify that your alternator is bad, make sure your battery is fully charged and can pass a load test.

Step 4 With the good battery installed, connect your digital multi-meter across the battery terminals with the engine turned off. A good battery should read between 12-13 volts.

Step 5 Start your engine and read the digital multi-meter’s output. The voltage should rise near 13.5-14.5 volts.

Step 6 Using an open end wrench, disconnect the battery’s negative cable.
o Tip: When disconnecting battery cables, be sure to always disconnect the negative cable first and do not allow it to come in contact with the negative terminal post while working on the vehicle.
o Tip: Wrap the battery cable with a shop towel and pull it away from the battery terminal.

Step 7 Disconnect the power and ground wires on the back of the alternator paying close attention to where each wire connects. Disconnect the wiring harness connector.
o Tip: Check for a loose wiring harness connector, cracked wire insulation, and corroded terminals. Replacing the wiring harness may be necessary.

Step 8 Loosen the alternator bracket bolts, and alternator adjusting bolts or alternator belt tensioner so that you can remove the alternator drive belt.

Step 9 Using the proper size socket and ratchet, remove the alternator mounting bolts, spacer (if equipped), adjusting bolt, lower pivot bolt (if equipped), and the alternator.

Step 10 Install new alternator.

Step 11 Using the proper size socket and ratchet, loosely install the alternator mounting bolts, spacer (if equipped), adjusting bolt and lower pivot bolt (if equipped).

Step 12 Install the alternator belt.
o Tip: When installing the alternator belt, make sure the alternator belt is fully seated in the groove of the pulleys.

Step 13 Pull the alternator until the alternator belt is tight.

Step 14 Tighten the alternator mounting bolts while gently moving the alternator unit to achieve proper alternator belt tension.

Step 15 Reinstall the power and ground wires to alternator. Install the wiring harness connector.

Step 16 Push down in the middle of the alternator belt to check belt tension. If the alternator belt moves more than a half an inch, it is too loose, adjust the alternator belt to proper tension before proceeding to next step.

Step 17 Now that the alternator belt has been installed and adjusted, reconnect the negative battery cable. Start the engine and check the battery voltage to verify proper alternator charging.

Step 18 Turn off the engine and recheck the alternator belt tension. Readjust the alternator belt tension if needed.


Good luck (remember comment and rated this).

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1 Answer

How do i change alternator belt on 1996 nissan sentra


Click on the following free direct Link. It has several Diagrams including the correct Serpentine/Drive Belt Diagram for your 1996 Nissan Sentra 1.6L DOHC In-Line 4-Cylinder. Included are Instructional and Directional Diagrams including how to remove/replace your Alternator Belt and set the proper Tension.

http://www.2carpros.com/car_repair_information/year/1996/make/nissan/model/sentra/1996_nissan_sentra_drive_belt_routing_diagram.htm

Let me know if this helped, or if you have additional information questions. Feel Free to contact me at FixYa.com!



Apr 06, 2010 | 1996 Nissan Sentra

1 Answer

97 nissan sentra with brake and battery light staying lit after changing battery. when it goes into passing gear light goes off then comes back on


These lights will come on if your alternator isn't charging fully. With a multi meter test your voltage at the battery with the engine running. The voltage should be above 14 volts. If it is below 14 you will need to replace the alternator.

Feb 13, 2010 | 1997 Nissan Sentra

1 Answer

My son has a 1991 nissan sentra with 378,000km he was driving this morning and car was bogging out and then it stalled and now will not even turn over the car had been sitting for some time what could the...


Is battery fully charged if not charge it. Start car . Hook a volt meter up to the neg. & pos. terminals of the battery. If the reading is over 13.2 alternator O.K. if lower i.e. 12.0 or less change alternator. Make sure alt. belt tight first. Retighten if necessary or replace if needed.

Sep 14, 2009 | Nissan Sentra Cars & Trucks

2 Answers

Alternator


1996 Nissan/Datsun Sentra 1.6L SFI DOHC 4cyl

Nissan Sentra/Pulsar/NX 1982-1996 Repair Guide
The alternators for Pulsar and Sentra have not changed much over the years. However, the 1987-88 alternators for Pulsar and Sentra have a different internal diode assembly.
  1. Disconnect the negative battery terminal.
  2. Disconnect the 2 lead wires and connector from the alternator.
  3. Loosen the drive belt adjusting bolt and remove the belt.
  4. Unscrew the alternator attaching bolts and remove the alternator from the vehicle.
To install:
  1. Install the alternator and retaining bolts loosely.
  2. Install the belt and connect the wiring.
  3. Adjust the belt as outlined in . Torque the retaining bolts to 25 ft. lbs. (34 Nm).

I hope help you with this (rated this help).

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2 Answers

I have a charging problem on my 89 camaro


So found the problem it was the seilnoid on the wasnt working properly store said good put it back hit with small hammer fired up so just replaced whole strarter now fires first time sounds awesome had lot of trouble tracking it down went threw new battery's thinking that was prOblem but was bad starter unit try this maybe will help u to

Jul 01, 2008 | 1989 Chevrolet Camaro

2 Answers

ALTERNATER


Replace the battery first with a new one , at least to test it, if battery is not fully charging it may be the cause. After check that the alternator belt is well in place, with a good grip and is not squealing. If not you may fix it just replacing the belt or putting it back in tension.
More likely it is a problem with the alternator.
There is a factory recall on 2005 Murano alternator, if this is your model contact Nissan, as you may be entitled to a free repair job at your local concessionary.
Check here:
Auto Recalls: 2005 NISSAN MURANO - ELECTRICAL SYSTEM:ALTERNATOR ...
If not you will have to replace the alternator, in this case I suggest contacting a qualified mechanic.
Here you can buy the part

Regards


Jun 02, 2008 | 2005 Nissan Murano

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