[mapex]

Shortly after installing my alcohol kit there developed a squeaking sound when the car was idling. It happens about every second. I've pretty much narrowed it down to the blower. Used a stethoscope for listening it seemed loudest inside the blower. Any ideas on what the squeaking might be from?

[LGG]

Sounds like your coupler. Have you ever had it replaced before? If not, try that first

[vhall222]

I thought the coupler sounded like rocks tumbling?

[dvldoc]

Bad couplers can sound like a ton of stuff, totally shot ones sound like rocks, once you go to a 3.25 pulley you can exspect to have to replace it, The holes get oval shapped from the stress of the blower spinning at a higher RPM. It's better to catch it early, the box of rocks sound is not the coupler but the rotors boncing around in the housing from being spun unevenley.