I have an 05 max SE with 31k miles on it. After I cut the car on and accelerate off for the 1st couple blocks, I hear a faint squealing under the hood. This lasts for just a second or two at a time, for the first couple starts, then it goes away. Maybe it's the belts, but it does not sound like the traditional belt chirping I have heard in cars past. Any ideas?

 

My 04 is doing the same sorta thing but I think mine is the alternator

 

Our 05 Maxima with 3.5 started making a "squealing" noise a few weeks ago. It would get higher and lower based on the rpm of the engine. I did some research and found the the timing belt tensionos is some Nissans were failing prematurly and needed to be replaced. Went to the dealer and sure enough that was the problem. Luckily with only 28k miles it was covered under warrenty otherwise may have been as high as $1500.00.

Frank

 

Double check the belts as well as your Idler Pulley
for your Ac & Alt. The bearing inside could be bad.

 

mine has a little belt-like sound that happens during idling after not starting the car for at least 2 days... but that goes away by warmup and it hasn't been a concern yet.