SCREAMING WHEN NOT PRESSING GAS
1999 Pontiac Bonneville • 119,000 miles
Replaced the tension pully and the belt looks good
You mean squealing/screeching? is it serpentine belt? they can look ok but still be worn out. the grooves wear too wide and bottom out and slip.
Try to isolate cause of noise with tube to ear ot auto stethoscope. could still be a bearing like alternator or AC.
Alternator is ok took it to autozone. There is a recall on the Fuel Pressure Regulator could this be the problem. If not when they fix the recall I will have them check the serpentine belt.
Let us know how it turns out.
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