rattling on start up
09-01-2015, 06:59 AM
#1
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Join Date: Sep 2014
Location: Grand Haven, Mi
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rattling on start up
Just wondering if anybody else has this
I have a 2012 jk sport, 3.6
On start up after sitting all night i start the jeep up. Normally it idles around 1000 rpms and slowly works its way down to factory specs
as the rpms drop slowly, it sounds like i have a bicycle bell under the hood....like a heat shield or something vibrated loose
once the jeep is warm it goes away at idle, but then as i give it gas and get into that rpm range its there again.
Wondering if anybody else has a similiar issue?
The jeep is going in for service in a week (grease, oil, tire rotation etc..) i mentioned this to the service guys to look at it....but id love to give them a direction to go if i can
Also i have what seems to be dry starts....first 3 seconds of start up its alot of valve train noise. Is this normal?
Jeep has been dealer maintained since day 1, only has 37k miles on it
I have a 2012 jk sport, 3.6
On start up after sitting all night i start the jeep up. Normally it idles around 1000 rpms and slowly works its way down to factory specs
as the rpms drop slowly, it sounds like i have a bicycle bell under the hood....like a heat shield or something vibrated loose
once the jeep is warm it goes away at idle, but then as i give it gas and get into that rpm range its there again.
Wondering if anybody else has a similiar issue?
The jeep is going in for service in a week (grease, oil, tire rotation etc..) i mentioned this to the service guys to look at it....but id love to give them a direction to go if i can
Also i have what seems to be dry starts....first 3 seconds of start up its alot of valve train noise. Is this normal?
Jeep has been dealer maintained since day 1, only has 37k miles on it
04-02-2018, 06:18 PM
#3
JK Newbie
Any updates and there’s my issue sound like what you experienced?
Any updates and there’s my issue sound like what you experienced?
Last edited by Papa Bear; 04-02-2018 at 06:19 PM. Reason: Add video
04-07-2018, 06:04 AM
#5
Super Moderator
Heat shield or maybe even exhaust manifold. I noticed mine went bad when I would hear it on cold starts and then go away once the JK reached optimal temp. It's doubtful since you have the low miles but worth a look.