Unusual noise/vibration sound in 307 drivetrain ???

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Johnnys1985OldsT
Posts: 2
Joined: Fri Jun 14, 2024 3:09 pm
TOA Membership Number: 1445
Years Owned: 1985 Oldsmobile Toronado

Unusual noise/vibration sound in 307 drivetrain ???

Postby Johnnys1985OldsT » Fri Jun 14, 2024 4:25 pm

There is an unusual noise/vibration sound in the drivetrain of my '85 Toronado with the 307. :x It comes when I apply the gas/torque to the engine. It is not steady. Coasting along, there is no noise. When gently applying the gas, there is no sound. It sounds like it is coming from under the hood. It is very loud when driving along and echos off buildings. Everything was checked by my "ace" mechanics, who found nothing loose or rubbing. They even removed the starter to check the flywheel, but found nothing wrong! The noise will appear when standing on the brakes and speeding up the engine. It is and erratic sound. What can It be :?: :?: :?:

Johnnys1985OldsT
Posts: 2
Joined: Fri Jun 14, 2024 3:09 pm
TOA Membership Number: 1445
Years Owned: 1985 Oldsmobile Toronado

Re: Unusual noise/vibration sound in 307 drivetrain ???

Postby Johnnys1985OldsT » Thu Jun 20, 2024 5:22 pm

Today, I filled my problematic Olds with 93 octane gas to see if it made a difference in the noise, but no! Still the same unusual noise/vibration. Still a mystery!


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