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  #13  
Old 02-10-2014, 11:01 PM
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Remove trim panel by gas pedal, you will see a plastic cover on side of heater. The tubes are behind cover. I squeezed foam in between tubes without removing cover, then secured it with zip ties. Get foam as close to fire wall as possible. Then under hood behind engine you will see heater hoses entering cabin. I put one large zip tie around both tube necks to keep them rigid. My vehicle is the Cherokee Trailhawk, not the grand cherokee. They may be different. Be careful, tubes could be hot.
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Old 02-10-2014, 11:12 PM
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Re: 2014 Trailhawk rattle

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Originally Posted by Richard Allen View Post
Remove trim panel by gas pedal, you will see a plastic cover on side of heater. The tubes are behind cover. I squeezed foam in between tubes without removing cover, then secured it with zip ties. Get foam as close to fire wall as possible. Then under hood behind engine you will see heater hoses entering cabin. I put one large zip tie around both tube necks to keep them rigid. My vehicle is the Cherokee Trailhawk, not the grand cherokee. They may be different. Be careful, tubes could be hot.
So you did this both inside and outside the cabin? Can you take a cellphone photo and upload them?
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Old 02-10-2014, 11:27 PM
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Yes. First squeeze foam in between and around heater tubes on drivers side of heater. Wrap zip ties around tubes, foam and plastic cover. The more foam the better. Remove engine cover, and behind engine you will see ac and heater lines. The heater lines were slightly loose at firewall. I zip tied both tube necks together with one zip tie. This prevented them from moving. Use foam rated for hi temperature.
Be advised I am not a trained mechanic and do not know if this is a proper solution. But it finally stopped the one flaw in what appears to be a perfect vehicle.
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Old 02-11-2014, 12:23 AM
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Re: 2014 Trailhawk rattle

The MacGyver approach...I like it!

Good job Mr. Allen. And thank you for sharing. I don't need it (yet) but I will file away for future reference.
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Old 02-11-2014, 12:27 AM
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Re: 2014 Trailhawk rattle

I found this hose with a green top laying up against the heater hose and firewall. It has a clip on it, but it's not clipped to anything. I zip-tied the clip away from the heater hose, but it did not get rid of the dashboard rattle.
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File Type: jpg Green Hose.jpg (207.3 KB, 35 views)
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Old 02-11-2014, 12:46 AM
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Quote:
Originally Posted by LeCreaux View Post
I found this hose with a green top laying up against the heater hose and firewall. It has a clip on it, but it's not clipped to anything. I zip-tied the clip away from the heater hose, but it did not get rid of the dashboard rattle.
There are threads saying that green check valve is the culprit, and I think that when they relocate it they move heater hose which may temporarily stop rattle, but it is not the problem. Use the foam insulation between tubes and around tubes by heater.
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Old 02-11-2014, 11:26 AM
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Re: 2014 Trailhawk rattle

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Originally Posted by Richard Allen View Post
There are threads saying that green check valve is the culprit, and I think that when they relocate it they move heater hose which may temporarily stop rattle, but it is not the problem. Use the foam insulation between tubes and around tubes by heater.
I bought zip ties and foam this morning and put foam and ties around those tubes inside. I don't see where to put ties outside, I only see one heater hose at the firewall. But it didn't affect the vibration sound at all, still as loud as ever at 1200-1500 RPM.

Can you take a picture of your fix, especially where the zip ties are?
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Old 02-11-2014, 11:41 AM
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Re: 2014 Trailhawk rattle

Here's a video of my dashboard rattle.

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  #21  
Old 02-11-2014, 01:52 PM
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That is exactly the same as mine.
It is the heater pipes causing this. It is important to compress foam in between heater pipes at side of heater. The pipes are behind black plastic cover. I used trim tool with 90 degree bend to get behind pipes and press in foam as tight as I could. Then added more foam all around pipes and tided it all with zip ties. THEN. Tied two heater pipes in engine compartment together with one tie. No more noise at all.
This is a temporary repair until jeep issues a service bulletin.
Send me your e mail and I will send pics.
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  #22  
Old 02-11-2014, 05:02 PM
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Re: 2014 Trailhawk rattle

I did all your steps according to your pictures but it still didn't fix mine. The rattle was as loud as ever.

However I did track it down very close to the same solution. My rattle was the Air Conditioning pipes right above the heater pipes. Since I had already zip-tied the heater pipes together, I zip-tied the large A/C pipe to the top heater pipe. No more rattle.

There's padding around the A/C pipes on the firewall, but it's loose inside that padding. Apparently it contacts something inside the firewall or dash. By stabilizing the pipe it couldn't rattle any more.

I'll show this to the dealer tomorrow morning and let him know they need a better solution. Maybe replace the padding around the A/C line or stabilize it more.
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File Type: jpg Zip Tied Hoses.JPG (33.7 KB, 40 views)
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  #23  
Old 02-11-2014, 05:49 PM
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While I am sure this noise has driven some of you nuts I am happy to hear this type of complaint because that means the Jeep is so damn quiet during operation that you can actually discern this type of noise generation. Take my 5.0 for a ride, or even my Rav4 and I doubt you would even notice these sounds.

Pat
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  #24  
Old 02-11-2014, 09:24 PM
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It is REALLY quiet now! Great ride.
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