Engine / Transmission Mount Questions - JeepForum.com
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > Engine / Transmission Mount Questions

The Black Friday Event! Today Only! Over 50% Off!Bestop Floor Liner Kit - Promo Code LINERKT40Corsa and Volant Exhausts - Black Friday thru Cyber Monday

Unread 05-25-2013, 06:19 AM   #1
Registered User
1990 YJ Wrangler 
Join Date: May 2013
Location: Bay Village, OH
Posts: 12
Engine / Transmission Mount Questions

I had a good knocking at start-up an low idle. I replaced the engine mounts with OEM ones, existing ones were not in bad shape. Then I went underneath to do the transmission mount. The mount itself was broken and the stud mount was crazy loose. I replaced the transmission mount with the Energy Suspension one I picked up at O-Reilly's. The stud bushings were in good shape so I just cleaned, disassembled and reassembled the stud set-up.
The knocking is gone, but there is a ton of vibration throughout the Jeep. I think I had over tightened the stud bushings so I went back in and loosened it up. It helped a little, but there is still way too much vibration being transferred to through the body. It feels like it is coming from the drivers side engine mount.
Anyway, does anyone have any ideas?

North_Coast_Cab is offline   Reply With Quote Quick reply to this message
Unread 05-25-2013, 10:01 PM   #2
Registered User
1991 YJ Wrangler 
Join Date: Apr 2008
Location: Meridian, Idaho
Posts: 2,554
Poly mounts for either the engine or transmission are known to transfer vibration through the body. They are much stronger and less to prone to failure, oil won't degrade as with rubber. These are a good choice for off road wheeling, but if this is mainly a daily driver, rubber mounts are really your best option.
idaholtby is offline   Reply With Quote Quick reply to this message

Quick Reply

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.