Rattle/rumble noise from gas tank when hitting bumps.

If you have confirmed it is in fact inside the gas tank it would have to be the gas tanks slosh guard which is the wall inside the gas tank which stops too much sloshing from occurring when the car is stopping or accelerating. There is not much which can be done about this besides just replacing the fuel tank itself. You could contact your local dealer to ask if they will assist in any way with this. To me a gas tank should last the life of the car :/.

humm might be that one of the back doors might be out of alignment
easy fix search it on here

Okay, I'll do some more searching. Not sure if it's in the gas tank as it seems to sound the same whether full or empty (if that matters).

Thanks for the feedback.

gulliver said:

Okay, I'll do some more searching. Not sure if it's in the gas tank as it seems to sound the same whether full or empty (if that matters).

Thanks for the feedback.

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Did you ever find a fix for this noise?

I'll bet the noise is from the rear stabilizer bushings. Mine is doing that same type of noise. There's a video about fixing it and it isn't hard. I just haven't gotten around to doing it.

My firstborn thought was the rear stabilizer bushings also! These Elements we notorious for them and that sound. If it?s high mileage then likely that?s what it is. Not super expensive fix either.

https://youtu.be/SRYfxRym-Kw

original post is from 2009...

Haha... thanks 07lmnt!

Damn, just when I try and be helpful. Maybe the person who bumped it needed some insight.

mbrown said:

I'll bet the noise is from the rear stabilizer bushings. Mine is doing that same type of noise. There's a video about fixing it and it isn't hard. I just haven't gotten around to doing it.

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I replaced all bushings, and I do mean all rear end bushings: knuckle, trailing arm, differential mounts. I replaced the rear upper arms and sway bar links and shock assemblies. It's not the jack or spare tire or the spare tire cover. It's not a door out of alignment. It's not the exhaust. All bolts are tight.

I was under the car yesterday after changing differential oil seals and mounts and started banging on things. I remembered that I read somewhere that someone had a gas tank rattle so I stated banging on the rear underside of the tank. It sounds like the rattle is coming from within or possibly on the top. It's fairly pronounced when going slow to moderate speed over bumps and rumble strips. Putting a new tank on is not an option unless someone has an NOS because they are discontinued.

I was curious if anyone else had solved this problem.

David M said:

Haha... thanks 07lmnt!

Damn, just when I try and be helpful. Maybe the person who bumped it needed some insight.

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I figured a thread bump might get some kind of answer. Over time, more stuff tends to pop up as cars get older.

David M- Thanks for the link to rear noise diagnosis and bushing replacement video.
Previously I was not shaking the stabilizer bar hard enough to hear noise. Already sprayed bolts with WD-40 and plan to replace bushings. Looks like an easy fix.