Cracked Motor Mount on 4cyl Auto

Tim. · Oct 7, 2009

So I took my car down to the local shop and got a few minor things fixed, in the meanwhile I asked them to look into why my car rattled so much at stoplights while idle. When I shift into Neutral all the rattling goes away. They said the transmision mount was cracked, and that the other mounts were old and soft. They wanted 600 for parts and labor to replace them.

Anyway I am looking into a more DIY option, and have come across the Prothane motor mount option. However I want to ensure that I am doing the right thing. I read on the forum here that you should not "cut out the rear mount because the prothane installs over the stock rubber." Now if my transmission mount is cracked, I assume that is the rear? If so I assume I cant use the Prothane option? If that is the case what other options do I have?

This is a daily driver and all I want to do is get rid of these annoying vibrations and rattling at idle.

Thanks!

Tx4Codeman · Oct 7, 2009

The rear is NOT your transmission mount. Btw, i have tried installing the prothane rear over the stock mount and it didn't fit at all. They should have just created a full solid piece like the other mounts :\

FlashBlueRS · Oct 7, 2009

The front, rear, and drivers side mounts are all transmission mounts.

Tim. · Oct 8, 2009

Ok. So I need to figure out which mount is actually cracked since all they told me is "transmission mount." I'll see if I can find a tutorial on here.

Just want to clarify anyway, if I get the Prothane inserts, will it be a more comfortable ride or a rougher ride? (I assume the reason why it rattles so much now is it is cracked) Or am I better off getting OEM? I just want to make the right purchase decision here.

Gangsta_Man · Oct 8, 2009

Low miles used OEM mounts would give the most comfortable ride. Prothanes will NOT be smooth at idle. People install them for their durability/performance

xxjustin100xx · Oct 8, 2009

With the prothane inserts its a rougher ride but you'll have less wheel hop.

gomer3G · Oct 8, 2009

there is actually only one transmission mount. the other three are engine mounts, front side and rear. i know, i have replaced them all. i have ripped the rubber off my rear one twice now. just get the stock ones. you should be able to pick up all 4 for just under $250. the three engine mounts are around $50 each, and the tranny one is around $100.

Tim. · Oct 9, 2009

Okay so buy OEM replacements and just drop them in? No problem. Should I buy from the dealer directly (I know it will be WAY more expensive, but I get a family employee discount which might offset that) or is there a safe website to order from? Never sure what you will get with Ebay, and I don't know how many people here are selling their used mounts with low mileage.

Thanks everyone, really appreciated!

Gangsta_Man · Oct 9, 2009

This website is good. I calculated about $265 for all the mounts. That's a pretty good deal for brand new OEM mounts.

https://www.trademotion.com/partloc...,0&groupid=10039&make=24&model=Eclipse&year=2001&catalogid=1&displayCatalogid=0

Tim. · Oct 9, 2009

Okay I'll take a look at that. Now, you previously said you recommended low mileage used? Is that just for a price break or will new ones be fine as well?

Gangsta_Man · Oct 9, 2009

That was just a recommendation to save money. New OEM ones are preferred. Make sure you don't buy aftermarket replacements, as they are inferior in rubber and overall quality

gomer3G · Oct 9, 2009

go to autozone or any other local parts store. i like to price them all and just purchase at the one i like better, i love price matching.

Cracked Motor Mount on 4cyl Auto

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