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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-

High Screeching Sound When Starting

  • Thread starter Thread starter mannymendez25
  • Start date Start date Feb 28, 2015
M

mannymendez25

Member
Feb 12, 2015
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18
Feb 28, 2015
#1
  • Feb 28, 2015
  • #1
Every time I start my 92 5.0 I hear an annoying high pitched screech when starting the car. Once the car is on, the screech is gone. What could this possible be?
 

mikestang63

SN Certified Technician
Aug 27, 2012
11,606
8,859
214
In the garage
Feb 28, 2015
#2
  • Feb 28, 2015
  • #2
Your belt. Check the tension, the pulleys and the tensioner.
 

Shakerhood

20+ Year Stangneter
Oct 28, 2004
3,356
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Ohio
Feb 28, 2015
#3
  • Feb 28, 2015
  • #3
Yep, sound like the belt is slipping.
 

7991LXnSHO

wanna catch the space herp
10 Year Member
Sep 1, 2010
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Feb 28, 2015
#4
  • Feb 28, 2015
  • #4
If the belt and tensioner are both ok (and I doubt it) pull the belt and make sure each accessory is spinning freely, smoothly and is not too hard to get moving. Does it squeek as the AC compressor goes on too?

Wild case possibility, it could be a starter bushing or the squirrel inside the starter making a screeching noise. The Bendix could be wearing out, even if a slipping belt is much more common.
 
M

mannymendez25

Member
Feb 12, 2015
35
16
18
Feb 28, 2015
#5
  • Feb 28, 2015
  • #5
OK, i will inspect the belt. I looked at the grooves and they dont look cracked so i didnt change it when i did my first tune up last week. I should change it for some peace of mind. if everything spins freely, does the screeching mean the belt is loose or tight?

it does not screech when the compressor kicks in, only when i start her up.
 

7991LXnSHO

wanna catch the space herp
10 Year Member
Sep 1, 2010
7,387
2,745
194
Kearney, NE
Feb 28, 2015
#6
  • Feb 28, 2015
  • #6
A screech is from a slipping belt, and they do not slip from being too tight. Too tight, then accessory item and pulley bearings start to wear out, and the belt can wear out quickly. If your year has the spring loaded tensioner (all years?) it could be weak. I suggested spinning each item by hand as something sticking or that spins really hard can squeal while getting up to speed.
 
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