2003 Chevy S-10 Engine howling and reduced performance

MAINEAK99

MEMBER
2003 CHEVROLET S-10
4 CYL
2WD
MANUAL
81,000 MILES

S10 started howling loudly, sound gets louder as the engine speed increases. Problem started while driving without overheating, warning lights or loss of oil pressure. Problem occurred once previously but, the engine returned to normal after a few hours of sitting. Appreciate any help.

7 Replies

JACOBANDNICKOLAS

MECHANIC
109,874 POSTS

Does the sound seem to be metallic or does it sound more like wind?

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Saturday, May 2nd, 2009 AT 2:38 PM

MAINEAK99

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4 POSTS

Does not sound mechanical more like wind. Like the fan is movig a whole lot more air or something like that.

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Saturday, May 2nd, 2009 AT 4:49 PM

JACOBANDNICKOLAS

MECHANIC
109,874 POSTS

I need you to open the hood with the engine OFF. Try to turn the fan that is attached to the waterpump and run by the serp belt. If it is hard to move, the fan clutch is bad. Do this when the engine is cold.

Let me know what you find.

Joe

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Sunday, May 3rd, 2009 AT 11:08 AM

MAINEAK99

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4 POSTS

Yes, it is very difficult to move.

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Sunday, May 3rd, 2009 AT 12:15 PM

JACOBANDNICKOLAS

MECHANIC
109,874 POSTS

If you have a fan clutch, and I think you do, chances are the clutch is bad. Because I am not there to see it, I can't be 100% sure that it has the clutch fan (some do and others don't), unless you can take a picture of it and upload it to me. Otherwise, you will need to ask a mechanic.

Let me know.