One problem related to engine knocking noise has been reported for the 2004 Honda Odyssey. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Honda Odyssey based on all problems reported for the 2004 Odyssey.
The motor mounts on this vehicle have to be replaced. There has been a banging noise coming from the engine upon acceleration for some time. I brought it to the repair shop and they are telling us that we have to replace the motor mounts at over $1000. 00. He has told us that this is a very common problem in this model vehicle. We have done research and found many others complaining to you and Honda, as well as other forum boards. This is a dangerous situation that is being overlooked by Honda. Motor mounts are not a routine maintenance part. They should not be failing at all. As you know, failure of this part could cause catastrophic results causing a vehicle to careen into others, due to not being able to stop. This should clearly be a recall issue. The consumer should not be footing the bill for an obvious safety issue that Honda is choosing to ignore. An investigation should be conducted immediately into this negligent behavior on Honda's part.