Im a mechanic more then likley its a Cv joint its comon on modles 02 to 05 grinding or clicking or any kind of sounds from the front end like the other people on here trying to say very first off is usually a brake problem or a bearing problem but if you've eliminated that it could be the brakes tie rod ends ball joints or bearings it's probably going to be your CV joints and if it's only making the noise why you doing a steady 25 to 30 miles an hour that's definitely what it is it's common in odysseys especially from 180000 miles and up but every once in awhile Could Happen earlier you also might want to check your axlesThis is on our '04 Ody w/76k (no history of trans issues),
I've found other grinding sound-related postings, but an admittedly-risky diagnostic test I tried has me in doubt.
The grinding sound is definitey speed-dependent, with longer pulses (that are most obvious) at slow speeds.
I jacked up each of the 4 corners, spun each tire and did not hear the noise, leading me to think the rotors are not the issue.
I then lifted the front on jack stands with both wheels off the ground. With the wheels already turning pretty fast at idle (surprising, I thought) I slowly accelerated - still no grinding noise.
My thought is taking the weight off the front tires points to something, but I've hit the limit of my diagnostic skills.
Any ideas of test suggestions?