Toyota 4runner squealing noise on startup. Stop your toyota from squealing its all in the turn of the key try the turn key slow trick the mystery of how to fix a squealing belt on a toyota camry. If its dry on a cold start up it will occasionally have a 1 second chirpsqueal but if its wet it will squeal like a dieing pig for about 5 seconds. How to fix that awful squeal.
If a belt is too big it will start making sounds as well. Different engines require different belts. Also there are times when the wrong size belt has been installed.
The best way to test this is when you first start it up spray the belt with wd 40 or brake cleaner anything that lubricates will work if the squealing goes away its the belt if not then its a bearing somewhere. If the torque and alignment on the belt tensioner and pulley are incorrect your belt may not have the proper pressure on it.
How To Troubleshoot A Car That Makes A Loud Screeching Sound When It Starts Autoblog
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