NHTSA Complaint #10683530 — 2008 HONDA ODYSSEY

CAR EMITS A GRINDING SOUND WHEN THROTTLE IS IN A CRUISE OR SLIGHT ACCEL POSITION. ENGINE GETS "STUCK" AT 1500 RPM'S WHERE IT EMITS GRINDING SOUND THE LOUDEST. CAN ALSO FEEL IT IN THE GAS PEDAL. NORMAL SEQUENCE IS THIS: 1) ACCEL TO ~40MPH 2) ONCE AT STEADY STATE AND IN 4TH GEAR, ENGINE RPMS WILL FALL TO 1500. 3) RPM WILL GET "CAUGHT" AT 1500, MAKES GRINDING SOUND 4) RPMS MIGHT BREAKTHROUGH 1500, POP UP TO 1800, AND GRINDING NOISE WILL DIMINISH. 5) RPMS WILL THEN DROP BELOW 1500, THEN RISE AND GET STUCK AT 1500 AGAIN ALONG WITH INFURIATING NOISE AND PEDAL VIBRATION. CYCLE IS USUALLY 5-10 SECONDS. GOING SLIGHTLY UPHILL MAKES IT CYCLE MORE FREQUENTLY. GOING DOWNHILL DOESN'T MAKE NOISE SINCE TRANS IS DISENGAGED. IT'S ALSO HARD TO TELL IF LOWER GEARS DO THE SAME THING BECAUSE ENGINE NOISE AND VIBRATION DROWN OUT GRINDING SOUND/FEEL. OTHER THOUGHTS: - KIND OF SOUNDS LIKE A STRONG CROSS-WIND (30+ MPH) GOING ACROSS THE WINDSHIELD. - IT ALSO SOUNDS SIMILAR TO HOW A BAD IDLER BEARING ON AN AC COMPRESSOR SOUNDS. THAT KIND OF METALLIC GRINDING SOUND. - IT'S NOT THE ENGINE MOUNTS (THEY'VE BEEN REPLACED) - IT'S SUBTLE AND SOME PEOPLE MIGHT NOT DETECT THE SOUND. *TR