Question about 1994 Chevrolet S-10
Truck: 1994 S-10 4.3L V6 with CPI Most Recent Changes: Replaced air filter, alternator, steering pump line, and S.belt. Problem: Started noticing a low pitched whine from the front that gets louder with acceleration but decreases when the AT shifts gears. Almost sounds like a belt whine but not as high pitched. Basically makes my little truck sound much bigger than it really is so it isn't much of a problem, just want to know why it is happening...Any ideas?
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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
sounds to me like a bad fuel pressure regulator. I would replace that and see what happens, if that fails you may have contaminated fuel
Posted on Jul 10, 2009
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