New Diagnosis for Rumble Strip and Shuddering
All - I took my 01 X to an independent shop that has a 25 year reputation here in Chicago, working solely on Honda and Acura automobiles.
After replicating the shudder and rumble strip issues, they ran a diagnostic and did a visual inspection. Everything checked out OK.
Here's what I thought was interesting.
The mechanic told me that apart from the rumble and shudder, the transmission performed flawlessly in the road test, up and down shifting smoothly without any slippage. I agreed...apart from certain, replicable, instances at a particular speed and rpm range, the tranny and the engine were perfect. RPM's did not fluctuate during rumble nor during shudder apart from me taking the foot off the gas because it is unnerving.
He noticed that both engine mounts were trashed and demonstrated to me how much the engine actually moved by applying the brake, placing the trans in Drive and engaging throttle. I was looking at the engine and the whole thing actually moved what looked like 3/4" or more!! That is a lot for an engine that is not supposed to move at all with good mounts.
Anyway, he suggested that this could be the cause of the "rumble" and what we perceived to be a shudder. Once the engine reaches a particular resonance or tension level with the tranny, the whole thing can vibrate (rumble) or even hop (front end shudder).
Anyway, he recommended replacing the 2 engine mounts...and suggested that my transmission may actually be fine.
He did not dispell the possiblity of transmission failure...but did note that if there was an internal tranny failure, other symptoms often likely exist...like slippage or locking or failure to engage.
Thoughts on this?
I searched the forum to look for any instances of Acura Client Services picking up some of the tab for busted mounts (it's a common problem with 01 MDX) -- but did not see any instances of this. Anyone get compensated for this expense?
Does Client Services require that the work be done at an Acura dealership for it to cover expense, or are they generally willing to accommodate independent Honda/Acura shops?
2001 SS MDX Touring - Original Owner
149,000 and running strong!
Redondo Beach, CA