Loud screeching sound on start

25

Asked by Aug 20, 2015 at 10:47 AM about the 2005 Toyota Sienna LE

Question type: Maintenance & Repair

I get a screeching sound when i start my van for the first time donot hear it all day . Apparently the serpentine belts needs to be lubricated. Need to know whether WD40 or soap is better. Would WD40 increase slippage if applied relative to soap?. Request inputs. Thanks

2 Answers

270,115

I'm not a fan of belt lube. Just replace the belt or the pulley/tensioner that is causing the noise.

2 of 2 people found this helpful.
107,595

Tom's right find the problem and fix it, the belt squeal is just a symptom.

2 of 2 people found this helpful.

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    Mik00000
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