Engine whine problem

DanRC30

DanRC30

Experienced Member
Joined
18 March 2009
Messages
250
Location
NJ
So I noticed a whine coming from the right side of the engine near the wheel. It gets higher pitched as the RPM's go up like a cat meowing, and is loudest at idle. I spoke with Larry B and he said it's most likely a pulley bearing guiding the A/C belt. Anyone know how hard that is to repair? He said to cut it, but I'd rather remove the belt and inspect that pulley bearing t confirm that's the problem. If it is, I'll replace it. I haven't even looked at it yet. Just figured I'd ask before jumping into it.

Thanks.
 
Dan,

Its easy to remove the AC belt and/or the idler pulley. I've done it as part of the TB replacement. When the snow clears, stop by. :-)

In an old posting it was noted that NTN part number 6203LLBC3/2AS is an $8 bearing that fits - a great deal compared to $80 for a new idler pulley assembly.

Frank
 
Hey Frank,
I was gonna give you a call but I didn't want to bother you over the holidays.

The car is making a lot of noise, so I'd rather not drive it. I have a better idea... you come down here! I have lifts now and we can do the work here no prob if you're up for it!

Good to hear from you.

---Dan


ftuhy said:
Dan,

Its easy to remove the AC belt and/or the idler pulley. I've done it as part of the TB replacement. When the snow clears, stop by. :-)

In an old posting it was noted that NTN part number 6203LLBC3/2AS is an $8 bearing that fits - a great deal compared to $80 for a new idler pulley assembly.

Frank
Click to expand...
 
I had a whine when I was out at the track and it sounded like I have a supercharger, but I don't. So I decided to pack up and head home. I noticed on the drive home the volt gauge dropped down to zero and back up every once in a while. It was the bearings in the alternator.
 
I'll check that too when I pull the belts off. Thanks.


CL65 Captain said:
I had a whine when I was out at the track and it sounded like I have a supercharger, but I don't. So I decided to pack up and head home. I noticed on the drive home the volt gauge dropped down to zero and back up every once in a while. It was the bearings in the alternator.
Click to expand...
 
Was your wife\gf in the car ???? lol
 
CL65 Captain said:
I will never dog the GF again, because she drove 2-1/2 hrs each way to the track to bring me a new rotor from the garage when I cracked it this year. :wink:
Click to expand...

Nah-I love my wife dearly and she bought me an 05' this year for Christmas.

But I just couldn't resist, it was to tempting lol
 
DanRC30 said:
Hey Frank,
I was gonna give you a call but I didn't want to bother you over the holidays.

The car is making a lot of noise, so I'd rather not drive it. I have a better idea... you come down here! I have lifts now and we can do the work here no prob if you're up for it!

Good to hear from you.

---Dan
Click to expand...

Dan,

I forgot which town you live in. PM me with that and your phone number (I misplaced it) so we can discuss what tools you do/don't have. We'll arrange something, but I'm pretty busy for the next 3 days. But by then the roads will be cleared.
 
CL65 Captain said:
I had a whine when I was out at the track and it sounded like I have a supercharger, but I don't. So I decided to pack up and head home. I noticed on the drive home the volt gauge dropped down to zero and back up every once in a while. It was the bearings in the alternator.
Click to expand...

I think my NSX have the same problem too. How to replace the bearings in the alternator? Can they be ordered separately or do I have to replace the alternator?
 
Just a thought...Was the A/C on?

My A/C makes a slight wine when on, after I converted it to the newer type of coolant.

LB knows his stuff, I would go with whatever he suggests. He has never steered me wrong:smile:
 
DRIFTER said:
Just a thought...Was the A/C on?

My A/C makes a slight wine when on, after I converted it to the newer type of coolant.

LB knows his stuff, I would go with whatever he suggests. He has never steered me wrong:smile:
Click to expand...

Mine does the same thing, figured it was the compressor bearing. If yours didn't make the noise before the coolant conversion, maybe that's all that is wrong with mine because mine's been converted too :smile:. Hope that's it!
 
DRIFTER said:
Just a thought...Was the A/C on?

My A/C makes a slight wine when on, after I converted it to the newer type of coolant.
Click to expand...

Hi Chuck,

The description sounded like it was a bad whine, like either the A/C compressor siezed, or the idler pulley siezed. If this is the case, the belt is bad anyway, so I suggested to just cut the belt off. If Frank gets together with Dan, all the better:).

Regards,
LarryB
 
Hi Larry! Yes, it sounds like a whine... like I have a supercharger. It all happened kind of suddenly, but it started off "not so loud" and it got louder and louder as I drove home. If the belt is shot from it, then I'll cut it off for sure. I just had all new belts put on a few thousand miles ago so I didn't want to ruin a new belt... didn't know it was probably shot from this though.

Frank said he'll probably be stopping by within a week or so. No rush since we're in an ice age anyway. Will update everyone when I dig into this more. Thanks for all the help!

---Dan




Larry Bastanza said:
Hi Chuck,

The description sounded like it was a bad whine, like either the A/C compressor siezed, or the idler pulley siezed. If this is the case, the belt is bad anyway, so I suggested to just cut the belt off. If Frank gets together with Dan, all the better:).

Regards,
LarryB
Click to expand...
 
Ok, so I pulled the alt belt off, started the car and it still whined. So I pulled the idler pulley off and it does seem a bit gritty when I spin it. So, where can I get this replacement bearing and belt? I just had all the belts done within the past few thousand miles... gggrrrr........


ftuhy said:
Dan,

Its easy to remove the AC belt and/or the idler pulley. I've done it as part of the TB replacement. When the snow clears, stop by. :-)

In an old posting it was noted that NTN part number 6203LLBC3/2AS is an $8 bearing that fits - a great deal compared to $80 for a new idler pulley assembly.

Frank
Click to expand...
 
DanRC30 said:
Ok, so I pulled the alt belt off, started the car and it still whined. So I pulled the idler pulley off and it does seem a bit gritty when I spin it. So, where can I get this replacement bearing and belt? I just had all the belts done within the past few thousand miles... gggrrrr........
Click to expand...

That's probably why the bearing went out. People tend to overtighten the belts which causes excess stress on the pulleys and bearings. You should always check to make sure the belts aren't overly tight when they're replaced by someone else. Yes, I learned the hard way on this :frown:.
Happy Motoring!
 
pgilliam1 said:
That's probably why the bearing went out. People tend to overtighten the belts which causes excess stress on the pulleys and bearings. You should always check to make sure the belts aren't overly tight when they're replaced by someone else. Yes, I learned the hard way on this :frown:.
Happy Motoring!
Click to expand...

Well, the Acura dealer did it when they did my timing belt!
 
DanRC30 said:
Well, the Acura dealer did it when they did my timing belt!
Click to expand...

It's a good thing the TB's have tensioners or you'd see a lot more waterpump replacements too. Replacing the bearing in the pulley is very easy. Take the pulley to a good auto part store and they'll be able to match the bearing. Just knock it out and gently hammer the new one in (the bearing should have one side covered by a flat seal - that side should face to the outside).
Happy Motoring!
 
pgilliam1 said:
Just knock it out and gently hammer the new one in (the bearing should have one side covered by a flat seal - that side should face to the outside).
Happy Motoring!
Click to expand...

Nah, I think I'll just use my hydraulic press.... ;)

Oh, and both sides seem to have that flat rubberish seal. Looks like a motorcycle wheel bearing to me.
 
nsxhk said:
I had that 'whine', turned out to be the alternator. Had it rebuilt, whine gone.
Click to expand...

I thought it might be that, but I pulled the alt belt off and the whine was still there. I guess its possible it could be both, but let's just start with the bearing... :)
 
So the book says to tighten the AC belt from 7-9 mm/10 kg if its a new belt...and its a new belt. What does "mm/10 kg" mean?
 

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