Changing alternator

Tiny
CRAZYCRICK
  • MEMBER
  • 2005 NISSAN ALTIMA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 87,000 MILES
Need help changing alternator. I have changed several on old cars but I am not sure if it comes out the top or bottom. Also, what all has to be loosened/taken off for it to come out?
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Tuesday, January 13th, 2009 AT 11:51 PM

16 Replies

Tiny
GFIMOTORCARS
  • EXPERT
Here is the order in which you will want to remove this alternator:
1. Disconnect the battery
2. Remove the engine undercover
3. Remove the radiator (instructions below)
4. Remove your drive belt (instructions below)
5. Remove your enigne idler pulley
6. Disconnect the alternator wires
7. Remove the alternator adjustable top mount
8. Remove alternator lower bracket
9. Slide the alternator out, you should have plenty of room


http://www.2carpros.com/forum/automotive_pictures/294900_Alternator_1.jpg



Radiator Removal
1. Drain coolant from radiator
2. Disconnect your upper and lower radiator hoses.
3. Remove your transmission cooler lines from the radiator and plug the lines.
4. Disconnect the reservior tank hose
5. Remove the radiator mounting brackets
6. Remove the radiator and radiator fan assembly

Drive Belt Removal
1. Drive belt tension is relieved by using a wrench or ratchet and socket to turn tensioner bolt, see tensioner location in picture.


http://www.2carpros.com/forum/automotive_pictures/294900_Drive_belt_35L_1.jpg



Let me know if you need any more information.
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Wednesday, January 14th, 2009 AT 12:22 AM
Tiny
CRAZYCRICK
  • MEMBER
And this is for a 2005 Altima V6 correct? The MB symbol confused me. Sounds like taking the radiator off is the big problem. Is that correct? Thanks for all the help. Sounds like it is going to be a job.
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Wednesday, January 14th, 2009 AT 12:39 AM
Tiny
GFIMOTORCARS
  • EXPERT
That is correct. The MB symbol is for my repair shop here in California, we specialize in MB vehicles, but work on all makes. But yes this is for an 2005 Altima 3.5L V6. It will be a bit of a job but do not let the radiator removal discourage you. It actually is not terribly difficult and is really only held on by a couple of upper retainers that are easily removed from the upper radiator support. After you disconnect the hoses and transmission lines the radiator and fan will pretty much just slide out. But all in all this will be a good days work if your not familiar with the vehicle.
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Wednesday, January 14th, 2009 AT 2:23 AM
Tiny
CRAZYCRICK
  • MEMBER
I got the alternator changed. Now when I stop at a red light the heater goes cold. I figured out today that when I turn the AC and the recirculate off it does not do it. Any ideas? Thanks again.
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Thursday, January 15th, 2009 AT 10:18 PM
Tiny
GFIMOTORCARS
  • EXPERT
Was this a previous issue or did this just start after the repair? If it happened immediately after the repair it is more than likely related to the repair. Check your coolant level, a lot of times your system will burp after you fill it and drive awhile leaving room for much more coolant. Also, check to make sure you have no leaks and that all coolant hoses are clear of kinks. Let me know what you find.
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Thursday, January 15th, 2009 AT 11:14 PM
Tiny
JEREMY_LDR
  • MEMBER
I am trying to take out my alternator and cannot get to the bottom nut. It is stripped out and cannot get it off. Any ideas?
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Saturday, January 22nd, 2011 AT 11:22 PM
Tiny
MAX18117
  • MEMBER
  • 2005 NISSAN ALTIMA
  • 3.5L
  • 6 CYL
  • AUTOMATIC
  • 107,000 MILES
I am trying to replace alternator and cannot get to the bottom nut. It is stripped out and cannot get it off. Help ASAP! Your Ideas will be greatly appreciated. Tom
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Tuesday, July 24th, 2018 AT 5:56 PM (Merged)
Tiny
CJ MEDEVAC II
  • MEMBER
Try holding pressure on the nut outward while you spin it this will help you remove it. Here is a guide to help you remove the alternator and the diagrams below to show you how it is done on your car:

https://www.2carpros.com/articles/how-to-replace-an-alternator

Check out the diagrams (below). Please let us know if you need anything else to get the problem fixed.

Cheers
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Tuesday, July 24th, 2018 AT 5:56 PM (Merged)
Tiny
CRAZYCRICK
  • MEMBER
  • 2005 NISSAN ALTIMA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 87,000 MILES
How do I get the alternator off of my car listed above. Looks like the whole motor has to come out. HA
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Tuesday, July 24th, 2018 AT 5:57 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
Hello,
Thanks for the donation.

To remove your vehicles generator (alternator) perform the following operations. This does require the removal of a few major components such as the radiator, so if you need further assistance with one of the removal procedures for a component such as the radiator, just let me know and I will post guidance.

REMOVAL
Disconnect negative battery terminal.
Remove radiator.
Remove front/right-side engine undercover.
Remove drive belt.
Remove idler pulley.
Remove generator adjustable top mount, using power tools.
Remove generator lower mount bolt and nuts, using power tools.
Remove generator lower front bracket bolt, using power tools.
Disconnect generator harness connectors.
Slide generator out and remove.

INSTALLATION
Installation is in the reverse order of removal.
Torque bolts to specifications listed on diagram below.


http://www.2carpros.com/forum/automotive_pictures/261618_Noname_131.jpg



Hope this helps..
Thanks for using 2carpros.com!
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Tuesday, July 24th, 2018 AT 5:57 PM (Merged)
Tiny
LEECG
  • MEMBER
  • 2005 NISSAN ALTIMA
  • 3.5L
  • V6
  • FWD
  • MANUAL
  • 177,000 MILES
Not charging.
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Tuesday, July 24th, 2018 AT 5:57 PM (Merged)
Tiny
WRENCHTECH
  • EXPERT
Check for power at the main terminal with the key off. Post what you find.
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Tuesday, July 24th, 2018 AT 5:57 PM (Merged)
Tiny
WRENCHTECH
  • EXPERT
Did I read this right? Have you already changed the alternator and still have a problem?
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Tuesday, July 24th, 2018 AT 5:57 PM (Merged)
Tiny
OUTKRY
  • MEMBER
  • 2005 NISSAN ALTIMA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 80,000 MILES
Alternator replacement information in layman's terms. Please
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Tuesday, July 24th, 2018 AT 5:57 PM (Merged)
Tiny
DONDWEJR
  • MEMBER
  • 2005 NISSAN ALTIMA
  • 4 CYL
  • FWD
  • AUTOMATIC
Changing alternator, something shorted now no electrical. How to fix?
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Tuesday, July 24th, 2018 AT 5:57 PM (Merged)
Tiny
CARADIODOC
  • EXPERT
Look for a large fuse that is bolted into the under-hood fuse box to see if it is blown.
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Tuesday, July 24th, 2018 AT 5:57 PM (Merged)

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