Corrdad Posted June 18, 2016 Share Posted June 18, 2016 I am having a high pitch whine from the engine compartment between 10 mph and 30 mph. I have been told it's the idler pulley and is a common issue. Anyone else have this issue and if so are there aftermarket replacement parts that can keep this issue from coming up again. Engine is 496. Thanks Quote Link to post Share on other sites
p1mlb01 Posted June 18, 2016 Share Posted June 18, 2016 I would confirm it's the idler pulley, I'm not sure how common of an issue, mine is 19 years old and I still have the original pulley. I thought about replacing it due to age, but when I asked about it at the shop where I get some parts, he told me he has only replaced 2 or 3 in the last 15 years . I would pull the belt off and spin the idler and accessory pulleys and make sure they turn free with no bind or excessive run out. The water pump will have a little resistance, but should turn free and true. Power steering pumps can get a whine as well, make sure your PS fluid is within operating range. Quote Link to post Share on other sites
Corrdad Posted June 18, 2016 Author Share Posted June 18, 2016 Thanks. I'll check my power steering level. Safe boating. Quote Link to post Share on other sites
jdsdls05 Posted June 19, 2016 Share Posted June 19, 2016 Look up fuel pump Whine you wont like the search results but I think its that more then the pully. I the brightside its a 1 hour fix just an expensive part Quote Link to post Share on other sites
Corrdad Posted June 19, 2016 Author Share Posted June 19, 2016 Thanks. I looked up the post and I'm not sure it fits with my issue. The problem in the fuel pump post seems to be a constant from start. I have no noise below 10 mph or above 30 but I'll check it anyway. I'm happy to fix whatever I just need to find it. Safe boating. Quote Link to post Share on other sites
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