My rattle does not seem to vary its sound with changing engine RPM. Also,
seems to fade with rising engine temp, so only after 5-10 minutes of
operation.
-----Original Message-----
From: Tim Althoff [mailto:talthoff@yllwdkta.com]
Sent: Wednesday, December 18, 2002 12:56 PM
To: 'dakota-truck@dakota-truck.net'
Cc: 'Parker, Jon (GRCI) '
Subject: RE: Rattling noise in engine compartment when started cold
I think I have the same thing as you are describing. Mine is definitely not
the cat! it is the motor or an accessory. mine lasts for about +/-5
seconds. it starts immediately after the cold start and then speeds up with
the idle and the slows down and then goes away. I am thinking its in the
valve train but have yet looked into it. is this what you are describing?
Tim Althoff
www.yllwdkta.com
-----Original Message-----
From: Parker, Jon (GRCI)
To: 'dakota-truck@dakota-truck.net'
Sent: 12/17/02 5:29 PM
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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