Vehicle is a 2006 Dodge Caravan with just shy of 200k miles
• issue occurs after a cold start (only)
• whirring/whining noise - not terribly high like a belt squeal
• there’s an intermittent hint of grind as well. Almost like pressures of movement (bumps, corners, etc) exacerbates the issue, makes the grind audible. First time I heard it, almost thought it was a tire rubbing lightly against fender or something. Until I stopped at a red light and the sound kept going.
• pitch audible at idle (so ruling out any wheel/axle, etc.), and is RPM dependent (higher pitch at higher RPMs)
• sound lasts only about 10 minutes or so. As it heats up, fluids get where they’re going, etc., it stops. It won’t occur again until the engine is cool and re-started
Just had it checked at a local shop and they didn’t come up with anything.
Any ideas? Suggestions very much appreciated!