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1997 Ford Ranger Squealing noise under the hood

Tiny
REMKV6
  • MEMBER
  • 1997 FORD RANGER
  • 4 CYL
  • 2WD
  • MANUAL
  • 87,000 MILES
My ranger starts fine and sounds normal while the engine is cold, but when the engine starts to warm up I hear a chirp chirp chirp and then a full on squeal. I am not sure, but it may stop when I get to speeds of 30mph or above. I do know that after I have driven higher speeds and slow down that the noise has seemed to lessen, but promptly returns after a minute. I recently had the serpentine belt replaced, the slave cylinder replaced, and the ignition coil replaced; but the noise did not appear until at least a few months after they were replaced. Any ideas?
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Sunday, January 31st, 2010 AT 2:47 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,740 POSTS
It sounds like the belt. Have you checked to make sure it is tight? Also, make sure nothing is leaking on to it like coolant, oil. Finally, to confirm my theory, start the engine. When it is making the noise, open the hood and pour a little water on the belt to see if the noise changes. If it does, it's the belt.

NOTE: Make sure to wear eye protection and old clothes. Water may fling up at you.

Let me know what you find.

Joe
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Tuesday, February 2nd, 2010 AT 3:40 PM

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