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Old 07-13-2018, 05:28 PM   #1
mattwithcats
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2002 SL2
Default Chirping noise under the hood...

Minor chirping noise under the hood, assuming itís the belt tensioner...

I know I need the 90 mm larger, I have a 780 serpentine belt
(Verses the 78 mm and 778 belt)

I am assuming the Dorman parts are bad news, correct?

I see two AC Delco tensioners on Rock Auto, assuming the cheaper one is old stock?

Any recommendations?

...
2002 Silver SL2, manual, 5th gear swap (.605), 80,000 miles, black badges,
205/60R15 "H" rated tires, 5mm spacers rear...
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Old 07-13-2018, 06:16 PM   #2
toggenburg
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2001 SL1
Default Re: Chirping noise under the hood...

Most likely serpentine tensioner, however; just be sure it's not one of the other devices being pulled around by the belt...like AC compressor, water pump, the idler pulley or the alternator....just saying

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Old 07-15-2018, 03:11 AM   #3
KNGRK9
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1999 SL2
Default Re: Chirping noise under the hood...

I had this issue for a bit with my Saturn. Wasn't belt related but rather one of the hoses near the firewall can't remember which

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Old 07-15-2018, 09:15 AM   #4
Saturn Night
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1995 SC2
Default Re: Chirping noise under the hood...

To test the belt tensioner, you will need a very long 13mm wrench and the engine idling.

Put the wrench on the pulley bolt and tighten it with a little pressure. If the chirping goes away, then the tensioner is starting to wear out.

If it doesn't go away, there are two other possibilities:

The Alternator
Water Pump

Power steering & AC have different symptoms, in addition to chirping/squealing, when the bearings begin to fail within them.

You may also notice the plastic seal is hanging out partially, on the stock tensioner. They typically last about 150,000-175,000 miles, under normal driving, wear conditions, and driver treatment of the car.

...
"What does a Saturn owner do, at the gas station?"

"He checks the gas, and fills the oil....."

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