Strange "blowing" sound on '07 Overland .....

Reply Subscribe

Thread Tools

Search this Thread

06-07-2011, 03:26 PM

Hidalgo

Newbie

Thread Starter

Join Date: Mar 2011

Posts: 17

Likes: 0

Received 0 Likes on 0 Posts

Model: Cherokee

Strange "blowing" sound on '07 Overland .....

Hi guys! My new-to-me '07 Overland Cherokee (5.7 Hemi) has a strange sound that it makes at random times. Mostly heard within a few seconds after starting it. The only way I know how to describe it is that it sounds like an extra / auxiliary fan or something blowing under the hood. It is fairly loud at first, and after 4-5 seconds it slowly winds down and stops.

Engine RPMs are not related to this sound and revving the engine has no effect on it.

Is this normal? And if so ... WHAT is this? It almost sounds like a small air compressor coming up to pressure.

Any thoughts would be appreciated.

Last edited by Hidalgo; 06-07-2011 at 03:45 PM.

Reply Like

06-07-2011, 04:29 PM

Bustedback

CF Veteran

Join Date: Feb 2010

Location: Oroville, CA

Posts: 12,367

Likes: 0

Received 19 Likes on 18 Posts

Year: 1995

Model: Grand Cherokee

Engine: 4.0 with all of the noise and clatter

Could be the cooling fan clutch engaging when it's cold.

Reply Like

06-07-2011, 04:35 PM

Hidalgo

Newbie

Thread Starter

Join Date: Mar 2011

Posts: 17

Likes: 0

Received 0 Likes on 0 Posts

Model: Cherokee

Quote:

Originally Posted by Bustedback

Could be the cooling fan clutch engaging when it's cold.

I didn't mention ...... It only does this when it is at operating temperature. Never noticed it when the engine is cold.

Reply Like

06-07-2011, 08:39 PM

tiwvr1

CF Veteran

Join Date: Mar 2010

Location: Elizabethtown, pa

Posts: 1,030

Likes: 0

Received 1 Like on 1 Post

Year: 1994

Model: Cherokee

Engine: 5.2

most likley the clutch fan, and if it is doing it at warmed up temp, it is probly ok.

Reply Like

06-09-2011, 10:30 AM

2Evil4U

Senior Member

Join Date: Jun 2010

Location: Slaughter, LA

Posts: 849

Likes: 0

Received 0 Likes on 0 Posts

Year: 1997

Model: Cherokee

Engine: 4.0L

Normal for a hemi. THe fan clutch will heat soak when the engine sits after running and will start really moving air for a bit until it cools down. My 04 and 06 hemis do the same thing.

Reply Like

06-09-2011, 11:55 AM

Hidalgo

Newbie

Thread Starter

Join Date: Mar 2011

Posts: 17

Likes: 0

Received 0 Likes on 0 Posts

Model: Cherokee

Quote:

Originally Posted by 2Evil4U

Normal for a hemi. THe fan clutch will heat soak when the engine sits after running and will start really moving air for a bit until it cools down. My 04 and 06 hemis do the same thing.

THANK YOU SIR!

That puts my mind at ease.