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Replacing alternator

Tiny
KOKISH
  • MEMBER
  • 1999 NISSAN ALTIMA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 137,777 MILES
How do you replace an alternator? Is it easy to get at?
Thursday, February 19th, 2009 AT 6:10 AM

12 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Looks like it is right on top. Shouldnt be too dificult.Disconnect neg batt cable before starting any work. Unbolt pivot and mounting bolts and remove alt, install new one.Be sure battery is charged before starting car or you could damage new alt.I included a pic of the belt routing in case it falls off the pulleys


https://www.2carpros.com/forum/automotive_pictures/1639_nissan_2.jpg

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Thursday, February 19th, 2009 AT 7:46 AM
Tiny
SCATENATO_BELLO
  • MEMBER
  • 1 POST
  • 1999 NISSAN ALTIMA
  • 4 CYL
  • 2WD
  • MANUAL
  • 180,000 MILES
Im trying to learn things about my car and was wondering if you would tell me how to change the altanator
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Wednesday, September 25th, 2019 AT 7:31 PM (Merged)
Tiny
ZACKMAN
  • MECHANIC
  • 4,202 POSTS
It is not necessary, you may need to move the coolant reserve bottle and A/C line for better access

Remove battery cables
Loosen and remove the two belt adjustment bolts (top) and remove the belt
Disconnect three electrical connectors from the alternator
Loosen and remove pivot bolt bolt (bottom)
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Wednesday, September 25th, 2019 AT 7:31 PM (Merged)
Tiny
FRANKPIER
  • MEMBER
  • 1 POST
  • 1998 NISSAN ALTIMA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 116,000 MILES
What are the steps to remove and replace the alternator.
It has a serpentine belt and I figure to try to keep it taught so I do not have to put it back on each pulley.( I can't really see where the other pulleys are from above the engine.)
Thanks
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Wednesday, September 25th, 2019 AT 7:31 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi frankpier,Welcome to 2carpros and TY for the donation.


https://www.2carpros.com/forum/automotive_pictures/12900_a_3.jpg



REMOVAL
1.Remove upper radiator hose.
2.Disconnect harness connectors, harness stay and harness to A/C compressor.
3.Release accelerator wire.
4.Back off adjustment bolt, remove belt.
5.Remove three generator bolts and generator.

INSTALLATION
To install, reverse the removal procedure.

https://www.2carpros.com/kpages/auto_repair_manuals_alldata.htm
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Wednesday, September 25th, 2019 AT 7:31 PM (Merged)
Tiny
MIKER1031
  • MEMBER
  • 2 POSTS
  • 1998 NISSAN ALTIMA
  • 145,000 MILES
I have been having and alternator issue. I replaced one and it was putting out 15.84 volts, I took that one off and replaced it with and other that wasnt putting out even 1 volt. Does it sound like I am having bad luck with alternators or, does it sound like there is a bigger problem? Thank you in advance
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Wednesday, September 25th, 2019 AT 7:31 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Try chaging your battery then have it tested, including a load test. It sounds like a bad cell or sulfated.
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Wednesday, September 25th, 2019 AT 7:31 PM (Merged)
Tiny
MIKER1031
  • MEMBER
  • 2 POSTS
I did have it on a charger/ tester while I was changing the alternator both times and it tested good.
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Wednesday, September 25th, 2019 AT 7:31 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Have it load tested, you can't test it while it's on a charger the initial load ahsto be taken off of it. If it's reading below 12.4 volts replace it
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Wednesday, September 25th, 2019 AT 7:31 PM (Merged)
Tiny
LAURADAVISLJD
  • MEMBER
  • 2 POSTS
  • 1995 NISSAN ALTIMA
I am replacing my alternator on my 95 Nissan Altima. This is my first repair job. I have loosened the bolts, adjusting bolt and electrical components and I can't get the alternator to budge. Where is the bolt that loosens the alternator belt. It is not mentioned in the Chilton's manual under removing an alternator.
Any help would be appreciated.
Laura
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Wednesday, September 25th, 2019 AT 7:31 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Remove the adjusting bolt, lock bolt, and lower thru bolt. This items are located within the alternator assy.
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Wednesday, September 25th, 2019 AT 7:32 PM (Merged)

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