Idle Drops and Belt Squeaks When Bass Hits
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=145514
Printed Date: July 03, 2025 at 11:41 PM
Topic: Idle Drops and Belt Squeaks When Bass Hits
Posted By: jadden14
Subject: Idle Drops and Belt Squeaks When Bass Hits
Date Posted: July 10, 2019 at 6:28 AM
I have a 1993 Toyota celica with a recently added m2000d amp running 2 12 machete super sports. After upgrading adding the speakers and amp the idle drops when the bass hits and the belt squeaks like mad. I put a 180 amp high output alternator in to fix this but it seems to make no difference. I checked all my grounds over and over again(recently did big 3), not sure what else to check, only thing I can think of is the battery is too small or my capacitor is not working right. Any suggestions?
Replies:
Posted By: geepherder
Date Posted: July 10, 2019 at 5:32 PM
Your alternator puts out a lot less than it's max rating at idle. Assuming your belt is in good condition and tensioned properly, turn down your volume at idle. You might also search for a smaller alternator pulley (more mechanical drag on the engine, but would spin it faster).
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