DC header, AEM cai and MI lightweight crank pulley install - Toyota Yaris Forums

Freestylin · 08-15-2014, 11:49 PM

Make sure the tension on the belt is set correctly. Right now I am assuming it is a bit loose, which causes the squealing noise at start-up. On a new belt, there should be approximately 7mm to 8.5mm of deflection when you press against the belt at the longest span (between the crank and alternator pulleys) in the middle. Specifications for a used belt is between 11mm to 13mm of deflection.

If that doesn't solve your problem, then check to see if your belt has been glazed due to running the belt loose. If so, then you may have to replace it again.

08-15-2014, 11:49 PM	#3
Freestylin Drives: 09 Blizzard Pearl RS LB Join Date: Sep 2009 Location: Calgary, Alberta Posts: 371	Make sure the tension on the belt is set correctly. Right now I am assuming it is a bit loose, which causes the squealing noise at start-up. On a new belt, there should be approximately 7mm to 8.5mm of deflection when you press against the belt at the longest span (between the crank and alternator pulleys) in the middle. Specifications for a used belt is between 11mm to 13mm of deflection. If that doesn't solve your problem, then check to see if your belt has been glazed due to running the belt loose. If so, then you may have to replace it again. __________________ “On a given day, a given circumstance, you think you have a limit. And you then go for this limit and you touch this limit, and you think, 'Okay, this is the limit'. And so you touch this limit, something happens and you suddenly can go a little bit further. With your mind power, your determination, your instinct, and the experience as well, you can fly very high.” ― Ayrton Senna