Whining noise at 2900rpm

[chemistone82]

I’d appreciate some advice. Thanks in advance. I have a high pitch whine above 2900 rpms. Here’s what I know so far

Definitely in the engine bay.
Alternator is charging at 14.1 V
It’s not the SAI system
Doesn’t seem to affect the running of the car

Any ideas what this could be?

98 2.5L 5 speed

[Starter986]

Originally Posted by chemistone82

I’d appreciate some advice. Thanks in advance. I have a high pitch whine above 2900 rpms. Here’s what I know so far

Definitely in the engine bay.
Alternator is charging at 14.1 V
It’s not the SAI system
Doesn’t seem to affect the running of the car

Any ideas what this could be?

98 2.5L 5 speed

Anyone in the passenger seat? My wife has been known to make whining sounds ~5500RPM. YMMV.

[Cunningr]

Apart from wife, i have one that whines while sitting on couch even, could be a water pump bearing or other bearing in the main belt ie ac pump, tensioner.

[BYprodriver]

Originally Posted by chemistone82

I’d appreciate some advice. Thanks in advance. I have a high pitch whine above 2900 rpms. Here’s what I know so far

Definitely in the engine bay.
Alternator is charging at 14.1 V
It’s not the SAI system
Doesn’t seem to affect the running of the car

Any ideas what this could be?

98 2.5L 5 speed

Remove the serpentine belt to see if the noise goes away, if it does the cause is a noisy pulley or water pump. If you detect any looseness or leakage from water pump replace with a new Pierburg pump.

[AZ986S]

Power steering pump? Low on fluid?

[chemistone82]

Well got it diagnosed at the shop. Bad belt tensioner and water pump.

[Cunningr]

Originally Posted by chemistone82

Well got it diagnosed at the shop. Bad belt tensioner and water pump.

Well at least that is a common issue, and sounds like you found it before it imploded inside.