Changing alternator

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

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.

Let me know if you need any more information.

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.

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.

Hello,
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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.

Hope this helps..
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Check for power at the main terminal with the key off. Post what you find.

Did I read this right? Have you already changed the alternator and still have a problem?

Look for a large fuse that is bolted into the under-hood fuse box to see if it is blown.

Loosing the belt by moving the tensioner pulley away from it

Depends on which engine you have. The QR25DE is easier to work with, you just remove the right front engine undercover to access the belt and alternator. On the VG35DE you will have to remove the entire radiator for this job though.