Strange noise

Hi folks,

2013 Tacoma. 75000 miles. Auto double cab. Yesterday, I sprayed the engine (cold) with some Gunk engine cleaner...let it sit for 10 minutes and gently hosed it off. Truck started up fine and I let it idle for about ten minutes. Today when driving, it had a chirping/ clicking sound at 40 mph and disappears a few seconds later. Drives and idles fine. No CEL.

Planning on changing the serpentine belt this week.

Any other ideas what this sound could be?

 

Put trans in P or N and slowly raise the rpms, see at what rpm it makes the noise.