Whistling sound only on partial throttle.
11-05-10, 11:14 AM
#1
Lexus Test Driver
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Whistling sound only on partial throttle.
The engine makes whistling sound only when it's warmed up, and only on partial throttle. If I give more or less gas, the noise disappears. Maybe some type of vacuum leak? Any ideas?
(97 SC4).
(97 SC4).
11-05-10, 11:32 AM
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11-05-10, 11:44 AM
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i think i know that noise that your talking about ...like a really loud whinning noise when you accelerate, my car used 2 do that only in the rain for some odd reason, but it eventually went away..its probably a vacuum leak or something.
11-05-10, 12:34 PM
#5
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It probably is but where lol. There are so many little hoses, I hope I can figure it out today.
11-05-10, 01:48 PM
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This is a long shot but I had that problem on my old 92 ES, it turned out to be the bearings on the alternator. Never experienced anything like it before or since. But it was making a loud whistling, and it was throughout the rpm range.
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11-06-10, 11:24 AM
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and for the loud whistling sound throughout the rpm range..i do remember changing out the alternator out so that could be the solution.
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