High pitched noise

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Jul 29, 2023 | 06:40 PM

bcompton35603

Thread Starter

Cross-Country

Joined: Oct 2008

Posts: 81

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High pitched noise

My latest issue is a high pitched noise after I start the engine and it is consistent. Recently I replaced the AC compressor, tensioner assembly, and serpentine belt. Today I replaced the idler pulley just below and left of the alternator. I was planning to replace the alternator any so hoping that's it. Only other thing I can think of is the fan clutch. Doesn't sound like it's coming from the area of the PS pump or crank pulley.

Jul 30, 2023 | 02:59 PM

Jon Freeman

More Turbo

Joined: Sep 2017

Posts: 574

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Take the belt off and run the engine for about half a minute, see if the noise persists. If not, it's coming from something driven by the belt. If it persists, it's coming from a non-belt driven source.