weird sounds

We are hunting a high pitch sound under the hood at idle. The sound get lower pitch and goes away as you rev the engine/push the gas pedal. It sounds like it’s on the driver side, upper part of the engine, it isn’t there when it’s started. It starts a few minutes in after it’s either warmed...

I recently bought an 06 jeep rubicon and everything’s been running great. I decided to take it to a professional detail place for an engine bay cleaning because the person o bought it from lived down a dirt road. After the cleaning was done i had it in neutral and it wouldn’t even roll down the...