Just whack it with a rubber mallet. If you hear chunks bounce around,
it's your cat. Same thing happened to my Grand National.
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Rick
Barnes
Sent: Tuesday, December 17, 2002 6:15 PM
To: dakota-truck@dakota-truck.net
Subject: DML: RE: RE: RE: RE: Rattling noise in engine compartment when
started cold
After its cold, have someone start your engine and CAREFULLY listen for
it from outside, that's what I did...you may not get it to rattle by
shaking it as the air pumping through it inside makes some of the pieces
bang.
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Shane
Craven
Sent: Tuesday, December 17, 2002 6:59 PM
To: dakota-truck@dakota-truck.net
Subject: DML: RE: RE: RE: Rattling noise in engine compartment when
started cold
Is there any other way to tell if your cat. converter is broken? I ask
because I have the same rattling noise in the mornings, but when I'm
under the truck and I bang on the cat.--it feels solid and doesn't
rattle. I have 124,434 miles on my '92 3.9L and I still have the OEM
cat (which looks to be 3' in/out). Thanks in advance!
Shane Craven
-----Original Message-----
From: Rick Barnes [mailto:barnesrv@attbi.com]
Sent: Tuesday, December 17, 2002 3:30 PM
To: dakota-truck@dakota-truck.net
Subject: DML: RE: RE: Rattling noise in engine compartment when started
cold
When your cat heats up, the rattle goes away...I have had this same
problem. It is broken inside .
Rascal
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Rick
Barnes
Sent: Tuesday, December 17, 2002 5:55 PM
To: dakota-truck@dakota-truck.net
Subject: DML: RE: Rattling noise in engine compartment when started cold
Its your catalytic converter
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Parker,
Jon (GRCI)
Sent: Tuesday, December 17, 2002 5:29 PM
To: 'dakota-truck@dakota-truck.net'
Subject: DML: Rattling noise in engine compartment when started cold
I am experiencing an intermittent "rattling" noise when I first start my
Dak
on cold mornings. It seems to be coming from the front of the engine
compartment, on the passenger side. I can't tell if it is coming from
an
accessory or the motor itself. The noise is somewhat subtle, and
subsides
with rising outside temps or when the engine warms up - although it can
still be detected. It is most prominent when started cold on a cold
morning. I can find nothing "loose" that would cause this noise.
I'm inclined to think it is not the valve train as the rattle "varies"
at a
steady RPM. I did have my lower intake manifold gasket replaced
recently,
which I believe involves complete and partial removal of the upper
accessories. Perhaps they didn't put things back together quite right.
Any thoughts?
Thanks.
Jon
99 4x4 CC 5.2L Auto Sport+
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