[V8] Replacement Battery and strange rumbling

[Kneale Brownson]

There ARE batteries with the little vent connector for the tube under the
rear seat that vents to the outside (supposedly--you want to be sure the
tube is intact and not pinched or plugged enough to prevent venting).
There even are batteries that have vent holes at each side with the
connector in one and a plug in the other so you can reverse them.  I get
mine at Sam's Club.

Does the noise sound like a rapid vibration?  It may be the bushings in the
trapezoid arms.  

At 07:08 PM 2/7/2005 -0700, Eric Langheinrich wrote:
>Hoping someone can give me some guidance on a couple of problems I'm having. 
>First and probably simplest is what to use for a replacement battery. As 
>I've been shopping around, I found what seems to be a suitable battery at 
>NAPA with the exception of the note to vent to the outside. That's difficult 
>given the battery sits under the rear seat. 
>
>The second problem I'm having is with a weird rumbling that seems to be 
>coming from the rear of the car. The noise is only present when the car is 
>in gear and only when moving at speed. Low speed doesn't cause the noise. 
>When I drive over a bump the noise gets worse for a second, but then returns 
>to the usual irritating noise. Any ideas? I've had the exhaust checked and 
>have been told it's definitely not the exhaust. Is it the rear diff? Any 
>other ideas on what I should check?