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Discussion Starter #1
A number of you including BPilot have reported a rattle from the right rear area of the car.

In my car it sounds like it is coming from the rear wheel well area.

Just had the car in at the dealer and the assistant service manager heard it quite plainly but could not figure it out. He said he took out the shock and played with the heat shield and some other stuff but could not eliminate it.

He is trying to get a Honda Canada tech specialist (TAC?) to come out and look at it on Monday.

He also said with the car pretty loaded with a couple of mechanics it squeaked quite loudly going over bumps. Don't know if the two issues are related or not.

Who has this particular rattle and has anybody had it fixed?

Bpilot did you ever test out or verify your differential theory?
 

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I have that same annoying problem too. Let us know what they find out. I'll be scheduling the water pump recall soon, and have them look at it the same time.
 

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Here's thought, I had left my rear seatbelts connected to the seat. When I would drive on a bouncy road or the sub would hit it would cause the seatbelt to vibrate off the wheel well area.

The only other rattle I had in the rear was my cargo cover and the dealer found it to be defective. A new one is on order.
 

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Discussion Starter #4
Definitely not the seatbelts. A very clear rattle going over bumps of a medium-to-high pitch, like metal rattling against plastic or metal. Sounds like something's loose or....?
 

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Sounds like the cargo cover ... Do you have the cargo cover installed ... if so ... take it off and see if the rattling continues ...

PrG
 

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Discussion Starter #6
This rattle from the right rear over bumps is not the heat shield (the dealer took it off) not the suspension (the dealer took off the shock), not the seatbelt and not the cargo cover.

My dealer cannot figure it out and said he'd have to try get a Honda Engineer to look at it.

Anybody have this and figure it out?
 

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Right Rear Rattle Noise

I had one of the headrests for the third row seat that wasn't pushed completely into its position that was causing a rattle that was driving me nuts. This was inside the cargo box area and not actually in the third row seat. I gave it a little push - RATTLE'S ALL GONE and hasn't come back.


GOOD LUCK!
 

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Discussion Starter #8
Glad you found it but that isn't the cause of my rattle. I have all the headrests out.

Mine definitely seems suspension related or something loose in the panel or door, and I heard it clearly on the dealer demo Pilot as well.
 

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Don't mean to side track the issue but I am confused about how the headrests shafts are supposed to be inserted into the holes in the cargo area below. I know the left hole is not drilled out and is about 1" deep whereas the right hole is completely drilled out. That means when you insert the headrest, the headrest lies at an angle with the shafts exposed. Is it supposed to be inserted all the way in with it shafts completely embedded into the plastic mold? I guess, if the headrest shafts are completely inserted, the headrest would rattle, maybe that's why the left hole is not completely cut-out, right?
 

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ablatt

Sorry to be away so long. I must tell you that this rattle is a problem and many must have it as my original and the replacement, as well as a demo have the identical problem. I thought by the time #33,400 was made, it would be solved. It is not. I have spent hours looking for this. For those offering suggestions, please be assured this rattle is not on the inside. I have taken the right rear seat out and with someone driving, it is clearly evident in the right rear wheel vicinity. Taking the shock off of my first Pilot eliminated the sound. Switching proved it not to be the shock, but the effect the shock is having on something else. I would pay big bucks for a solution to this one. I have taken the wheel off, the rotor off, the brake shoes off (the emergency brake uses shoes inside the rotor) and have not found the problem. I continue to think it is related to the axil interaction with the rear differential, but can not prove it. This is most noticeable at slow speeds and small bumps. The MDX I drove did not do this. The new Pilot did not do it as bad at first, but it is NORMAL now. Anyone want to buy a SS Pilot with NAVI at a discount? 2100 miles in ten days! We need help on this and please dont let the thread die until someone solves the issue. Remember the field engineer said this was NORMAL. He was right, but normal rattles drive me crazy. HELP.
 

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Discussion Starter #12
BPilot, the strange thing is that it doesn't do it ALL the time, but only when the vibration going over bumps hits a certain frequency. It could be at low or high speeds.

I don't know much about cars but couldn't it be something loose around the subwoofer or seatbelt harness inside the body panel? I've also noticed that the rear air spoiler at the top is very loose on my Pilot but the sound certainly seems to be coming from the rear right wheel well area.

It also drives my nuts and I can only assume from yours and my experiences that most people don't notice it and accept it as normal road noise.

I also didn't hear it in my test drive of the 2003 MDX.

Well I'm taking it to another dealer on Thursday to have a look and will offer Maple Leaf tickets to any mechanic who can figure it out and fix it.
 

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I also had a "mysterious" noise coming from the rear area which sounded like a suspension noise. Coincidentally I also had a piece of broken trim along the inside top of the glass on the rear hatch and also a rear hatch strut that had lost pressure and would cause the hatch to bounce when it opened up to the limit of the struts. The dealer replaced both the broken trim piece and the left rear hatch strut. Since the pieces were replaced the "mysterious" suspension noise has not returned. I'm thinking that in my case it was the defective strut that was making the noise.
I know that other people have said that they also have defective hatch struts. Maybe you should check yours out?:confused:
 

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I am going too far with this..

ablatt, I was away and hoped you would have solved this by now. Here is what I have done and maybe have a minor improvement, but I may go to an MDX to solve this. On the new Pilot, removing the right rear shock solves the noise problem. It simply goes away. I have yet to figure out what this means. Swapping the shocks makes no difference. I removed the right rear seat and spent a lot of time riding and listening with my brother-in-law driving. The best spot for the sound is where your right foot would be if you were sitting in the right rear seat. This conincidently, is directly above the upper shock mount. There is absolutely nothing loose in that area. What is loose and can be easily moved to produce the sound is the right driveshaft. It moves in and out and has some up and down movement. The left driveshaft is tighter where it mounts into the differential as was the case on my original Pilot. I did two things. I took a rubber strap and fastened one end to the differential end of the drive shaft and the other end to the shaft itself. This pulls the shaft toward the differential which should help control the lengthwise slack. I also added lubricant to the cv joint boot on the wheel side. My next step will be to add lubricant to the differential side. The theory is that the grease will make movement more difficult and cushion the sound. The next step will be to figure a way to tighten the fit of the d-shaft into the differential. I still think our problem is in this area. Surely others have this noise as both of mine have as well as another I test drove. We need all the help we can get on this one. BPILOT
 

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Scoobs - Thanks

Wish mine and ablatt's rattle was that simple. I can pinpoint the area by the ear on floor method and this problem is outside and underneath. The Honda tech told me after a quick ride in my first Pilot that something that easy to hear would be easy to fix. It was still rattling at 11,000 miles and trade in. My new one is the same. The Honda Field Engineer said this was "Normal." I can assure you it is not and am literally begging for help on this. It rattles with the hatch open, the door open, the emergency brake on or off, regular brakes on or off, accelerating or de-accelerating, turning may have a minor impact, but not with the shock off. Explain that and you'll make a lot of people happy. My wife included as she is at her limit with me and the rattle. I know ablatt would appreciat it too. Thanks, BPILOT
 

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Sorry to hear that the problem appears to be more difficult to isolate and solve. I really think Honda should do something for you guys to resolve this issue. If I can think of something else to assist I'll let you know.
 

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Discussion Starter #17
Well, 3 different dealers have not been able to isolate and fix the rattle from the right rear. The funny thing is it doesn't do it ALL the time and is worse some times than others.

The assistant service manager at the dealer where I bought it can hear it and sympathizes with me, but he says he spent a lot of time on it and couldn't isolate it. He is now trying to get a Honda engineer here in Canada to look at it, but I have no idea when that will happen.

I also would trade in the Pilot for an MDX, as it has a way smoother ride, but have to get a good enough price on the Pilot to make it worthwhile.

My Pilot is pretty solid otherwise and meets all my requirements so it would be really nice to fix this problem. Hopefully one of us can provide the answer.

By the way, BPilot, I don't know if I ever showed you this post before, but if not, here is one you'll find interesting from the MDX forum regarding a 2001 or 2002 model:

__________________________________________________
Loose driveshafts - rattle on bumps
I finally investigated a loud mettalic rattle from the rear wheels, every time I hit a bad bump

It seems to be the rear driveshafts. They fit very loosely to the differential housing, and can be rattled up and down.

This was quite a shock to me, as they seem very loose.

Anyone else looked at their rear drive shafts ? just grab em' and shake them up and down.
_______________________________________________
 

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Good Research

ablatt - I have felt, as you know from previous posts, that this is the area of concern. I actually have some pictures of how I wrapped the right driveshaft with a soft rubber to see if the sound would be muffled. It seemed to help slightly. It would be helpful for those fellow posters who have access to drawings, to provide a drawing of the area of the differential where the drive shaft is inserted. My next effort will be in this area. It would be nice if Honda would address this issue. My origianl complaint letter contains similar wording regarding the noise on my original Pilot. The relpy from Honda was that this is NORMAL! Any and all help will be appreciated. Bpilot
 

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Here are some assembly diagrams. Hope they help. Let me know if you need any of the part numbers for these components.

Chris

This first pic is of the rear diff.
 

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