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high pitch squeal that goes away with throttle

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5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

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YOUR RESEARCHhigh pitch squeal that goes away with throttle

Leading reported evidence

Test on cold start car

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

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Suggestion
30 second job to pull belt and test on cold start car.
Original post Read captured discussion
high pitch squeal that goes away with throttle

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Leading evidence: 'Test on cold start car' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Test on cold start car' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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1 matching discussions · 5 captured posts examined · 0 partial discussions

Frequently discussed actions (1)

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Test on cold start car

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
30 second job to pull belt and test on cold start car.
Original post Read captured discussion
high pitch squeal that goes away with throttle

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Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

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Generation: 20261026T174436Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Just noticed driving home a high pitch squeal that is very loud OFF throttle, but goes away immediately WITH throttle. Sounds like typical belt squeal but can't say for sure. Luckily I was only 2 miles out and made it home. No smoke or smells. Car is an '00 6spd coupe with 110k. Recent water pump, clutch and IMS with 15k tops. Unknown when the drive belt/rollers/pulleys were last done. Any ideas? Just weird how it comes/goes with or without throttle. Luckily I have an apt with my mechanic next week for something else but won't drive it in the meantime to be safe.

POST 2Original post

30 second job to pull belt and test on cold start car. Well, 60 seconds If not a belt easy to move to next issue on list

POST 3Original post

Has the AOS ever been replaced? Try removing the oil cap while engine is running, if it has an unusual suction on it the AOS diaphragm has failed. If it has failed , take a look at the UAOS, eliminates ever having to replace that pita thing again.

POST 4 / ORIGINAL POSTEROriginal post

Quotes source post: 17489107

Yup it's the AOS thanks. Just fired it up and saw a faint puff of smoke (it never smokes) and the oil cap was a little more difficult to remove than when the motor is off. Also, a few minutes prior to hearing the squeal, I was parking at the store and noticed an erratic idle drift up to 1500rpm while coasting in neutral. Now it all makes sense. I'll tow it to my indy to be safe. In addition to the UAOS, any other suggestions while we're "in there", such as renew clutch and ims?

POST 5Original post

Quotes source post: 17489774

The UAOS install is only 3.5-4.0 hours labor and is not associated to the IMS, RMS, clutch,( unless the tech is doing those as" an engine out procedure"), but if they have not been updated, I would suggest updating them as well as the coolant tank.

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