Recent Topics
Air Fryer....whose got'em?
by Schmoe. 01/16/19 01:59 PM
ebates - anyone a member?
by Papa Bear. 01/16/19 01:29 PM
Ordered a 2019 X5 for the Wife
by gofast182. 01/16/19 12:48 PM
Today, I ride
by SirTanon. 01/16/19 12:02 PM
2019 Nissan Rogue SL
by JTK. 01/16/19 11:19 AM
Does GM oil life monitor % go down without driving?
by Corollaman. 01/16/19 10:37 AM
Ford tire wear issues?
by Redright9. 01/16/19 10:23 AM
New Battery
by CarlGR. 01/16/19 10:21 AM
It's January and I Need My Motorcycling "Therapy" !!
by LoneRanger. 01/16/19 10:13 AM
Are New Vehicles Too Expensive?
by SubLGT. 01/16/19 10:02 AM
Manual transmission fluid in Europe for Mazda
by zsero. 01/16/19 07:31 AM
Affected by the gov't shutdown?
by xBa380. 01/16/19 07:04 AM
Opinion Needed / 1998 Olds 88
by Mark72. 01/16/19 06:24 AM
Chevron Supreme color change
by OilUzer. 01/16/19 05:14 AM
Dual exhaust benefits
by OilUzer. 01/16/19 03:02 AM
M1 0w40
by Pinoak. 01/16/19 01:55 AM
M1 0w40
by Pinoak. 01/16/19 01:51 AM
The best in personal defense (Humor)
by StevieC. 01/15/19 11:10 PM
Newest Members
VV03, Witchipoo, Durco1977, ConnorM, dkar26
66950 Registered Users
Who's Online Now
100 registered members (4WD, 28oz, 53' Stude, 240_Ed, 97f150, 9 invisible), 2,227 guests, and 34 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics296,643
Posts4,956,493
Members66,950
Most Online2,577
Jan 14th, 2019
Donate to BITOG
Previous Thread
Next Thread
Print Thread
Hop To
Alternator noise with new belt #4515867
09/14/17 06:53 AM
09/14/17 06:53 AM
Joined: May 2005
Posts: 821
Ozark Mountains
callbay Offline OP
callbay  Offline OP
Joined: May 2005
Posts: 821
Ozark Mountains
2011 Ford Fusion with 2.5 4 cyl. 91,500 miles.

The alternator was making a noise that sounded like a bearing. I checked carefully with an engine stethoscope to make sure it was the alternator.

When I installed the new alternator I put on a new belt while I was at it. The new belt was a Gates but I had to get the belt tensioner to the max to let me let the belt on. it does not seem overly tight now though.

The new alternator makes a bearing noise now although not as load as the old one. I thought the belt would break in and stretch some but with 250 miles on it the alternator still makes some noise.

Any thoughts?

Thanks!

Re: Alternator noise with new belt [Re: callbay] #4515873
09/14/17 07:03 AM
09/14/17 07:03 AM
Joined: Oct 2009
Posts: 3,657
Wet side WA
JohnnyJohnson Offline
JohnnyJohnson  Offline
Joined: Oct 2009
Posts: 3,657
Wet side WA
New Alternator or rebuilt Alternator? What's the warranty?


2004 Corolla 128175
Out: VML 5w-30 TG4967 OCI 5007 Miles
In: EDGE EP 5W-30 Bosch 3311 122537 7-18-18
2006 Duramax 74615
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73705 4-22-18
Re: Alternator noise with new belt [Re: callbay] #4515876
09/14/17 07:04 AM
09/14/17 07:04 AM
Joined: Jun 2003
Posts: 17,997
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline
Joined: Jun 2003
Posts: 17,997
Deplorable in apple valley, ca
Bad clutched pulley?


02 Wrangler carlube 5w30
87 F250 traveler 15w40
07 fjcruiser Chevron 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: Alternator noise with new belt [Re: callbay] #4515904
09/14/17 07:41 AM
09/14/17 07:41 AM
Joined: Sep 2007
Posts: 1,062
TX, USA
JMJNet Offline
JMJNet  Offline
Joined: Sep 2007
Posts: 1,062
TX, USA
With parts quality now, you almost cannot assume a new part as good unless it is tested.

Sounds like nothing wrong except you get a bad alternator?
Did you test to see if it generates amp as per the specification?


  • 2017 Toyota Sienna
  • 1995 GMC Suburban 6.5L Turbo Diesel


Re: Alternator noise with new belt [Re: callbay] #4515909
09/14/17 08:00 AM
09/14/17 08:00 AM
Joined: Sep 2014
Posts: 1,502
Toronto Canada
WobblyElvis Offline
WobblyElvis  Offline
Joined: Sep 2014
Posts: 1,502
Toronto Canada
With the engine running spray the inside of the belt with a little water. If the noise changes, it's related to the belt not the bearings.

Re: Alternator noise with new belt [Re: WobblyElvis] #4515955
09/14/17 08:53 AM
09/14/17 08:53 AM
Joined: Feb 2014
Posts: 2,635
Canada
Lolvoguy Offline
Lolvoguy  Offline
Joined: Feb 2014
Posts: 2,635
Canada
Originally Posted By: WobblyElvis
With the engine running spray the inside of the belt with a little water. If the noise changes, it's related to the belt not the bearings.


bingo!


06 Lexus IS350- Wife
88 BMW 325is- Mistress
Say "no" to Turbo!

BOB IS THE OIL GUY® Powered by UBB.threads™