Question about 1993 Chevrolet S-10
My S-10 makes a sharp whining noise. i have removed the belt and started it, still makes the noise. So.... pulley's and all belt driven hardware eliminated. No codes are thrown. Whining sounds like the whine from an amp. and increases and decreases pitch when accelerating. I have no amp hooked up. i have disconnected the radio just to be sure and the noise continues. running out of things to troubleshoot. any ideas? Maybe unrelated but the injectors seem to be dumping an excess of fuel during idle.
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Posted on Jan 02, 2017
it is your idler pulley. get it from dealer comes with bracket, just use pulley off bracket. take your belt off and your idler pulley is lower right hand side(facing your engine). 15mm bolt, replace pulley and reinstall your belt. it;s a common problem on trailblazers
Posted on May 05, 2009
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