I was amazed at the difference in noise at idle after I replaced both of mine and how much it quieted it down....
Never knew motor mounts could make that much noise at idle....
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| Finally got around to changing motor mounts. http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=86522 |
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| Author: | buddy357 [ Mon May 01, 2017 5:19 pm ] |
| Post subject: | Finally got around to changing motor mounts. |
Spent a couple hours yesterday changing both motor mounts. Wasn't horrible, but not a lot of fun. The sound came from the drivers side I thought, but my hearing isn't the best. Most of the posts I read when figuring out the rattle seemed to say the passenger side usually went first. So like an idiot I did the passenger side first, and it wasn't the one. Driver's side though, rattled like a chew toy. Only hiccup came as I was buttoning up. Broke u-joint on my extension, so I have to pick up another to finish tightening things down. It's got to be age, my Libby only has about 42k miles. |
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| Author: | jws84_02 [ Mon May 01, 2017 8:46 pm ] |
| Post subject: | Re: Finally got around to changing motor mounts. |
Nice work. I hate doing the driver side. Have you changed the timing belt? It's due by age even though it has low mileage |
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| Author: | WWDiesel [ Mon May 01, 2017 9:33 pm ] |
| Post subject: | Re: Finally got around to changing motor mounts. |
I was amazed at the difference in noise at idle after I replaced both of mine and how much it quieted it down.... Never knew motor mounts could make that much noise at idle....
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| Author: | Dez [ Mon May 01, 2017 11:31 pm ] |
| Post subject: | Re: Finally got around to changing motor mounts. |
I wonder if this is the noise that has been driving me nuts. I've checked everything except motor mounts I didn't think they could cause noise. I mainly hear it when coming to a stop at idle or in reverse. |
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| Author: | flash7210 [ Tue May 02, 2017 12:05 am ] |
| Post subject: | Re: Finally got around to changing motor mounts. |
Motor mounts have been on my to do list for far too long. I need to get off my butt and replace them. |
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| Author: | usa591 [ Tue May 02, 2017 2:42 am ] |
| Post subject: | Re: Finally got around to changing motor mounts. |
Dez wrote: I wonder if this is the noise that has been driving me nuts. Very likely. And one of the less expensive mysterious noises to fix. |
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| Author: | buddy357 [ Tue May 02, 2017 6:12 am ] |
| Post subject: | Re: Finally got around to changing motor mounts. |
Geordie did the timing belt, studs, and weeks kit in November of 15. Only put 6k on it since. Keep saying I'm gonna sell it but then don't. Guess I'm a glutton for punishment. |
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| Author: | WWDiesel [ Tue May 02, 2017 10:09 am ] |
| Post subject: | Re: Finally got around to changing motor mounts. |
Dez wrote: I wonder if this is the noise that has been driving me nuts. I've checked everything except motor mounts I didn't think they could cause noise. I mainly hear it when coming to a stop at idle or in reverse. I too had never considered a motor mount rattling at idle, I had replaced both the belt tensioner and alternator override pulley trying to eliminate the rattling noise at idle which was worse if AC compressor was engaged: so I was truly amazed at the difference when I changed out all mounts on my CRD! After I got the new ones installed, I found that the left (drivers side) mount when shook in hand, had a very audible rattling noise internally!  According to what I have read, they are "hydraulic" type motor mounts and are very different than conventional just rubber bonded to metal motor mounts that I am very familiar with.  Live and learn.... 
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| Author: | GordnadoCRD [ Tue May 02, 2017 3:23 pm ] |
| Post subject: | Re: Finally got around to changing motor mounts. |
My driver's side one also had something rattling inside. The passenger side one was split very nearly in half. |
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| Author: | buddy357 [ Wed May 03, 2017 7:25 am ] |
| Post subject: | Re: Finally got around to changing motor mounts. |
I started with the decoupler pulley. The rattle was only there when idling, usually when the nose was pointed downhill. Under load, nothing. Was driving me nuts. |
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