serpentine belt for 2007 yaris hatchback

[nikki9]

hi, just a question. i had my serpentine belt replaced at firestone and about two days later there was a loud screeching noise when i would start the car and also when i would accelerate. i took it back and the mechanic said the belt was loose and he said he would tighten the belt. that worked for about a week and now the noise is faint but still there when i accelerate sometimes. any suggestions or advice? thanks

[yaris2010RS]

could be still loose or too tight. to check yourself Simply press the belt with your finger,
halfway across the suspended area. If a belt can be depressed more than ½ inch its too loose

[ilikerice]

get OEM belts and take it to another mechanic.. ive always had issues buying belst from aftermarket part stores dayco, driverite, etc.. they all seem to stretch after a week so if i do a belt job on someones car i tell them, i only install OEM belts.. u will be retightening aftermarket belts for weeks.. i personally have never had a problem with oem belts. just my 2 pennies

[thebarber]

make sure both bolts that attach the alternator are tight....thats how you tension the serpentine belt...

if the tension is correct, once the belt streches it should be fine...

[nikki9]

thanks so much for your time and info:thumbup: