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2001 Mitsubishi Diamante Squealing

Tiny
SWEHNER
  • MEMBER
  • 2001 MITSUBISHI DIAMANTE
  • 6 CYL
  • FWD
  • AUTOMATIC
When accelerating in the lower two gears of my 2001 Mitsubishi Diamante, I hear a loud, rotational squealing noise from the right side under the hood (adjacent to the right-front tire). However, when the transmission up-shifts the 2nd time, the squealing instantly disappears. It has gotten progressively worse over the last couple weeks, and I've also started smelling a slight burnt rubber smell from time to time. It seems very likely to me that a belt needs to be adjusted and/or replaced, but if so, which one?
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Tuesday, March 1st, 2011 AT 4:59 PM

8 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Noises had to diagnose without being at car. Have you opened hood and inspected?
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Tuesday, March 1st, 2011 AT 5:06 PM
Tiny
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  • 5 POSTS
It has been difficult to catch it making the noise in park, but the one time I have caught it so far, the squealing was loudest right next to the washer fluid reservoir (red circle in picture).
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Tuesday, March 1st, 2011 AT 5:40 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Circled Alternator maybe bearing starting to fail. How old is belt?
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Tuesday, March 1st, 2011 AT 5:42 PM
Tiny
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  • 5 POSTS
The belt just got replaced in september of 2010. Is it time for a new alternator?
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Tuesday, March 1st, 2011 AT 5:58 PM
Tiny
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Try turning on lights, A/C wipers ect to load ALT if it starts to squeal then yes Alt going
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+1
Tuesday, March 1st, 2011 AT 6:01 PM
Tiny
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  • MEMBER
  • 5 POSTS
I can't get it to make the noise now, even with the wipers/lights/stereo/AC all blasting. Seems like it'll only do it on a cold start.
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Tuesday, March 1st, 2011 AT 6:11 PM
Tiny
DOCFIXIT
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If it is charging and makes noise once and awhile run with it.
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Tuesday, March 1st, 2011 AT 6:29 PM
Tiny
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  • 5 POSTS
All right--I appreciate the help
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Tuesday, March 1st, 2011 AT 6:31 PM

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