We are trying to replace the alternator

Tiny
JPICKLESIMER5
  • MEMBER
  • 2011 NISSAN QUEST
  • 3.5L
  • V6
  • AUTOMATIC
  • 125,000 MILES
We are trying to replace the alternator in the van listed above. We are having trouble trying not to drop the air compressor. Is it possible to do the replacement and if so how exactly? Thank you
Friday, June 12th, 2020 AT 2:35 PM

10 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening,

There is no way to remove it without dropping the compressor. I have tried this many times and had no success.

It must be released to drop the alternator.

Roy

ALTERNATOR

Removal and Installation

REMOVAL
1. Disconnect the battery cable from the negative terminal.

CAUTION:
To prevent damage to the parts, disconnect the battery cable from the negative terminal first.
2. Remove air duct (inlet). See: Air Cleaner Fresh Air Duct/Hose > Removal and Replacement > Exploded View.
3. Remove reservoir tank. See: Radiator > Removal and Replacement > Exploded View.
4. Disconnect alternator harness connector.
5. Remove "B" terminal harness nut, and then disconnect "B" terminal harness.
6. Remove alternator mounting bolt (upper).
7. Remove engine under cover. See: Interior Moulding / Trim > Removal and Replacement > Exploded View.
8. Remove front wheel RH.
9. Remove splash guard RH. See: Front Fender Liner > Removal and Replacement > Removal And Installation.
10. Remove drive belt. See: Drive Belt Tensioner > Removal and Replacement > Removal And Installation.
11. Remove idler pulley. See: Drive Belt Tensioner > Removal and Replacement > Removal And Installation.
12. Remove compressor mounting bolts, and then move compressor to secure work space. See: Compressor HVAC > Removal and Replacement > Exploded View, "Exploded View".

CAUTION:
Never disconnect low-pressure flexible hose and high-pressure flexible hose from compressor.
13. Remove water pipe mounting bolts, and then move water pipe to secure work space. See: Oil Cooler, Engine > Removal and Replacement > Exploded View.

CAUTION:
Never disconnect water hose from water pipe.
14. Remove return tube fixing clamps, and then move return tube to secure work space. See: Power Steering Line/Hose > Removal and Replacement > Exploded View.

CAUTION:
Never disconnect return tube from return hose assembly.
15. Remove alternator mounting bolt (lower) and alternator mounting nut (lower).

ImageOpen In New TabZoom/Print

White Arrow Indicates Vehicle front

16. Remove alternator from the right side of the vehicle.

CAUTION:
Be careful not to contact with and damage surrounding parts when removing alternator from the vehicle.

INSTALLATION
Note the following items, and then install in the reverse order of removal.

CAUTION:

imageOpen In New TabZoom/Print

Temporarily tighten all of alternator bolts and nut. And then tighten them in numerical order shown in the figure.
Install alternator, and check tension of belt. See: Drive Belt > Procedures > Checking Drive Belt.
Be careful to tighten "B" terminal nut carefully.
For this model, the power generation voltage variable control system that controls the power generation voltage of the alternator has been adopted. Therefore, the power generation voltage variable control system operation inspection should be performed after replacing the alternator, and then make sure that the system operates normally. See: Charging System > Initial Inspection and Diagnostic Overview > Inspection Procedure.
Was this
answer
helpful?
Yes
No
Thursday, May 13th, 2021 AT 12:26 PM
Tiny
DAMIEN ROSS
  • MEMBER
  • 2 POSTS
  • 2011 NISSAN QUEST
  • V6
  • 2WD
  • AUTOMATIC
  • 21 MILES
Our alternator gave out and we bought a new one, but don’t know how to replace it since when you look it up it’s all 2004 or 2001 models.
Was this
answer
helpful?
Yes
No
Thursday, May 13th, 2021 AT 12:27 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,837 POSTS
Replacing it isn't too bad. You will need to remove the fresh air duct and the coolant reservoir. Here is a guide to help you step by step with instructions in the diagrams below to show you how on your car. Check out the diagrams (Below).

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

Here are the directions specific to your vehicle. The attached pics correlate with the directions. Before starting, make sure the battery is disconnected.

Removal and Installation

REMOVAL
1. Disconnect the battery cable from the negative terminal.

CAUTION:
To prevent damage to the parts, disconnect the battery cable from the negative terminal first.
2. Remove air duct (inlet). See: Air Cleaner Fresh Air Duct/Hose > Removal and Replacement > Exploded View.
3. Remove reservoir tank. See: Radiator > Removal and Replacement > Exploded View.
4. Disconnect alternator harness connector.
5. Remove "B" terminal harness nut, and then disconnect "B" terminal harness.
6. Remove alternator mounting bolt (upper).
7. Remove engine under cover. See: Interior Moulding / Trim > Removal and Replacement > Exploded View.
8. Remove front wheel RH.
9. Remove splash guard RH. See: Front Fender Liner > Removal and Replacement > Removal And Installation.
10. Remove drive belt. See: Drive Belt Tensioner > Removal and Replacement > Removal And Installation.
11. Remove idler pulley. See: Drive Belt Tensioner > Removal and Replacement > Removal And Installation.
12. Remove compressor mounting bolts, and then move compressor to secure work space. See: Compressor HVAC > Removal and Replacement > Exploded View, "Exploded View".

CAUTION:
Never disconnect low-pressure flexible hose and high-pressure flexible hose from compressor.
13. Remove water pipe mounting bolts, and then move water pipe to secure work space. See: Oil Cooler, Engine > Removal and Replacement > Exploded View.

CAUTION:
Never disconnect water hose from water pipe.
14. Remove return tube fixing clamps, and then move return tube to secure work space. See: Power Steering Line/Hose > Removal and Replacement > Exploded View.

CAUTION:
Never disconnect return tube from return hose assembly.
15. Remove alternator mounting bolt (lower) and alternator mounting nut (lower).

White Arrow Indicates Vehicle front

16. Remove alternator from the right side of the vehicle.

CAUTION:
Be careful not to contact with and damage surrounding parts when removing alternator from the vehicle.

INSTALLATION
Note the following items, and then install in the reverse order of removal.

CAUTION:

Temporarily tighten all of alternator bolts and nut. And then tighten them in numerical order shown in the figure.
- Install alternator, and check tension of belt. See: Drive Belt > Procedures > Checking Drive Belt.
- Be careful to tighten "B" terminal nut carefully.
- For this model, the power generation voltage variable control system that controls the power generation voltage of the alternator has been adopted. Therefore, the power generation voltage variable control system operation inspection should be performed after replacing the alternator, and then make sure that the system operates normally. See: Charging System > Initial Inspection and Diagnostic Overview > Inspection Procedure.

Check out the diagrams (Below). Please let us know what happens.
Was this
answer
helpful?
Yes
No
+1
Thursday, May 13th, 2021 AT 12:27 PM (Merged)
Tiny
KSIFFORD
  • MEMBER
  • 1 POST
  • 2005 NISSAN QUEST
  • 10,000 MILES
How long does it approximately take to take out the alternator and replace it completely?
Was this
answer
helpful?
Yes
No
Thursday, May 13th, 2021 AT 12:27 PM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 44,374 POSTS
Hello,

The book gets 1.9 hours to do. Here is a guide that will show you what you are in for when doing the job and a diagram (below) of what it will be like on your car:

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

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken
Was this
answer
helpful?
Yes
No
+2
Thursday, May 13th, 2021 AT 12:27 PM (Merged)
Tiny
FLOREY
  • MEMBER
  • 1 POST
  • 2005 NISSAN QUEST
  • 3.5L
  • 2WD
  • AUTOMATIC
  • 177,000 MILES
I replaced alternator and battery. First few hours the brake and battery light came on. Apparently standard by nissan to let you know to replace alternator. Took back to mechanic and lights turned off. 3 months later lights turn back on while driving and loses all power. Any suggestions would be helpful!
Was this
answer
helpful?
Yes
No
Thursday, May 13th, 2021 AT 12:27 PM (Merged)
Tiny
KNOWLEDGE IS POWER
  • MECHANIC
  • 1,136 POSTS
Id have to say you may have a faulty alternator or battery. You could even possibly have a poor wiring connection. Grab the battery cables on top of the battery and if you can twist and/or remove them on the battery ten that's a poor connection. Also look or green fuzzy corrosion. That can cause improper charging.
Was this
answer
helpful?
Yes
No
-1
Thursday, May 13th, 2021 AT 12:27 PM (Merged)
Tiny
FARONDEAN1978
  • MEMBER
  • 3 POSTS
  • 2005 NISSAN QUEST
  • 6 CYL
  • AUTOMATIC
  • 78,900 MILES
Can anyone tell me how to remove and replace a alternator on a 2005 Nissan quest van. Like What tools are needed and a step by step guide on removing and installing a new one? Also I'm not sure if this matters or not but the alternator on my quest is located on the passenger side.

Thanks
Was this
answer
helpful?
Yes
No
Thursday, May 13th, 2021 AT 12:27 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,837 POSTS
You have to remove the alternator from the top, meaning you need to take out the radiator and fans as well as the battery tray etc.

Here is a guide and diagrams below to help you see what it will be like for your car.

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

First, open the hood. Disconnect the battery starting with the negative terminal. Next, lift the front end of the Quest and safely prop the vehicle on jack stands. Once the battery is disconnected and the front end safely lifted and secured, remove the plastic cover under the vehicle that is covering the engine area.

It will require a ratchet and socket. Once that is removed, Locate the alternator, loosen the idler pulley adjusting bolt. Unplug the electrical connections on the alternator. Using a ratchet and socket, loosen the bolts holding the alt in place. Pivot the alternator so the belt can be removed.

Unbolt the alternator the rest of the way from the engine block using a ratchet and socket. Once all bolts are removed, carefully remove the alternator from the vehicle.

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

Cheers
Was this
answer
helpful?
Yes
No
-1
Thursday, May 13th, 2021 AT 12:27 PM (Merged)

Please login or register to post a reply.

Sponsored links