My Alternator makes a lot of noise. Should I replace with new one or just replace a front and rear bearing?
Please give me your advice.
Thanks.

 

sounds like we have the same problem... yesterday morning, the TL's first cold start of the morning had a loud grinding sound... it sounds like it is coming from the alternator so i am guessing the bearing is going...

at 150k mi, i will just change out the alternator...

 

Why deal with the bearings, refurb alts have lifetime warranty on them and they are reasonable in price.

 

whew... false alarm for me... took it to the shop today... it was the tensioner pulley...

 

^ I had the same problem and thought it was the alternator too, but turns out to be the A/C compressor's pulley. Good to see that you have found the problem.

 

I had that replaced earlier this month, after dealing with the squeeling for a few yrs. Finally, the best snapped. No a/c no heater no nothing! I couldn't find a used tensioner pulley at a junkyard so I had the dealership rape me...without lube.

 

i went aftermarket... 90 for the parts... my mech charged me 40 for labor...

 

Hey guys, this happened to my son's 2002 RL over the weekend. I discovered that you can replace the bearing in the tensioner pulley with a stock 6203
rs 17 x 40 x 12 bearing available on line for about five bucks, or 10 for $15. I always thought this car had "belt sqeak," but now I know it was a bearing going bad. I think this size bearing is used in all of the belt tensioner pulleys in all of Honda and Acura vehicles, alternators, A/C, PS, etc. This sure beats the stealership.

 

Sorry to bring this back from the dead:

My s/o's 2008 tL-s started making a whining noise pretty badly.

Well I pulled the alternator today and had it tested.

It passed fine without any issues at two different autozone stores - and wasn't making any noise when tested on the machine.

So what is making the noise?

I can't find any of the pulleys that isn't spinning freely or making noise...

But when the car is running, omg loud squealing / whirring / grinding!

 

Maybe you need to post on 3rd or 4th GEN...

 

anyone have the scans or a DIY on the tensioner pulley?

 

For what year? I could find some info to post for the first gen but you apppaently have a 2008. As stated above, you've posted in the first generation TL section. Both cazio and Black_R are asking in the wrong area.