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#4755258 - 05/12/18 06:54 PM bearing noise
vavavroom Offline

Registered: 10/31/17
Posts: 192
Loc: California
The following is not a model-specific question. On an engine with the below-listed accessory belt driven components, which bearing, going bad, is most likely to be noisy upon start-up only to quiet down after a few minutes with the engine running?

belt tensioner
idler roller
water pump
power steering pump
A/C compressor

#4755276 - 05/12/18 07:09 PM Re: bearing noise [Re: vavavroom]
Chris142 Offline

Registered: 06/05/03
Posts: 17106
Loc: Deplorable in apple valley, ca
02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40

#4755329 - 05/12/18 08:06 PM Re: bearing noise [Re: vavavroom]
Eddie Offline

Registered: 12/07/03
Posts: 9721
Loc: Florida, Cape Coral
Agree because the highest Alternator load is just after starting, to recharge the battery. Ed
CX5 Touring 2.5L :-)

#4755489 - 05/12/18 11:58 PM Re: bearing noise [Re: vavavroom]
Oro_O Offline

Registered: 09/20/14
Posts: 1356
Loc: Seattle-ish, WA
As mentioned, alt. Rebuilding your own is not terribly hard or pricey if you have a workbench and some basic skills.

To neck it down, though, get a very large flat bladed screwdriver and put the blade on the various components. Put the handle against your ear and you will tell quickly which is the offending piece. Itís a very effective impromptu stethoscope if you do not have one.

#4762528 - 05/19/18 11:13 PM Re: bearing noise [Re: vavavroom]
vavavroom Offline

Registered: 10/31/17
Posts: 192
Loc: California
This time it was the coolant pump. How do I get the screwdriver out of my ear?