Vibrations around alternator

[ShipFixer]

Got a quick question for the class before I go look at something. The metal bits around my alternator vibrate a lot more than they used to at low RPM resulting in rattling noises. Doesn't appear to be the alternator itself from trying to move the flywheel but I wouldn't rule out the internals.

As I go to look at it, could this either be a dying alternator or a bad motor mount near there? No bad bearing noises or anything else and my belt tensioner is relatively new.

[smj999smj]

They had a TSB regarding vibration at idle due to bad engine mounts, so it could be your problem.

[ShipFixer]

I'm thinking that's what it is. How big of a job is it to replace them? I'm away from home north of LA but tthere's an auto hobby shop on base. Could I do it myself Friday afternoon before leaving town, or could the Nissan dealership here do it within a day?

Or is it more difficult than a small vehicle where you roll a jack under it to support the motor, remove, replace and drive away?

[ShipFixer]

Is it pretty much the same as the Frontier as per the thread here?

http://www.clubfrontier.org/forums/f23/ ... x4-108953/

[ShipFixer]

One more question, anyone try the PRG polyurethane mounts? If I can't get the Nissan ones locally I may order those...

[akley88]

One more question, anyone try the PRG polyurethane mounts? If I can't get the Nissan ones locally I may order those...

thats one of my next items. i know the xterra and frontier guys really like them.

[ShipFixer]

Just ordered them. Would have been $300 locally for Nissan, $200 from Courtesy Parts for Nissan, or $149 plus shipping for PRG.

I'll risk the slight increase in low frequency vibration for survivability