When the honeycomb in my cat let loose from the casing, it was a rattle
on deceleration and at idle, but then quieted down under throttle as the
exhaust volume pinned it against the back of the casing.
I don't know if it's the same rattle. Mine sounded like a bearing going
in the trans for a while, then it turned into a sound like rocks in a
blender on low speed.
On 8/31/2012 10:21 AM, Ken & Janet Olson wrote:
>
>
> ----- Original Message ----- From: "Mike Burgess"
> <mike_burgess@yahoo.com>
> To: <dakota-truck@dakota-truck.net>
> Sent: Friday, August 31, 2012 10:14 AM
> Subject: DML: rattle on long deceleration
>
>
>>
>> While pulling a pretty heavy trailer, and using engine brakeing
>> (overdrive selector OFF) on a 10 mile downhill grade (Grapevine, in
>> southern california) I started getting a "rattle" or odd buzz (almost
>> like a bearing spinning out !) from either engine or trans. It
>> cleared right up, when I give it a tiny bit of throttle, and returned
>> right afterward, but it ain't normal. Ideas, theory's ? did not
>> return after flatland driving and using engine brakeing.
>>
>> 5.2L , autotrans w/OD 1998 Dakota, 210K miles
>>
>
> Couple outside of the box ideas: Catylitic converter heat shield or
> rear transmission mount.
This archive was generated by hypermail 2b29 : Thu Feb 07 2013 - 20:41:40 EST