dry running sound from engine

[geo.k23]

Hi all i have the sound like a dry bearing coming from the engine it speeds up and slows down as i accelerate and decelerate i can't hear it on tickover i don't think it's the water pump i've never had to top up with water and temperature is always bang on what i don't have is air conditioning it has never worked since i got the car over two years ago i've heard this dry sound from the day i got the car is it possible the sound i hear is coming from the air conditioning pump any advice much appreciated thanks in advance

[trikey]

In my experience its usually the tensioner that fails and sounds like this.

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[geo.k23]

Originally Posted by trikey

In my experience its usually the tensioner that fails and sounds like this.

Sent from my SM-G780G using Tapatalk

thanks trikey

[chris75]

Trikey's probably right but just as a check , is the aircon actually turned off ? Is it the climate control version with the Econ setting ?
Do you think the noise is in the engine compartment or under the dash ?
I just ask as I have a similar noise and believe there is a blower in the heater unit which varies with speed and can make this kind of noise
( All my tensioners and pulleys were renewed at a recent belt change so I'm happy with them )

[geo.k23]

Originally Posted by chris75

Trikey's probably right but just as a check , is the aircon actually turned off ? Is it the climate control version with the Econ setting ?
Do you think the noise is in the engine compartment or under the dash ?
I just ask as I have a similar noise and believe there is a blower in the heater unit which varies with speed and can make this kind of noise
( All my tensioners and pulleys were renewed at a recent belt change so I'm happy with them )

thanks for replying chris75 yes it's definitely coming from engine yes it's the dual climate with Econ setting

[rovertone]

Also give consideration to alternator bearing running dry. I hadnt had any previous issues until returning home on a long journey I had a dry whining sound start, Couldn't see anything at idle and at steady revs noise was lessened so decided to keep going for home. Didnt make it, in slow traffic engine stalled and wouldn't turn and I thought it had seized. Turned out that the bearing had completely broken up, locked the alternator which amazingly locked the drive belt and stopped the engine.

[Ed3]

I use these to find this kind of issue

https://www.ebay.co.uk/itm/231467678...Bk9SR7rmnd7jYA

[T-Cut]

There are two tensioners that operate in a similar fashion. Apart from the aircon belt the auxiliary belt also has one. Maybe worth a listen there too.

[al_dente]

Originally Posted by geo.k23

thanks for replying chris75 yes it's definitely coming from engine yes it's the dual climate with Econ setting

I think Chris75 is suggesting you turn off the climate control, just to make sure the noise isn't coming from the air-con compressor