Lexilux

Hi all,

I noticed something odd today. When my son stepped on the gas with the car in park, the rear end of the car raised up a lot. My son is pretty knowledgeable and mechanically inclined but he says hes never seen that and doesn't think it's normal. I'm gonna call the shop on Monday but any ideas on what would cause this? Is it normal?

The car hasn't been the same since I had the motor and transmission mounts changed in January....

Thanks in advance for anyone's thoughts on this!

DosyBoy

iTrader: (1)

Go bounce test the rear struts, start with that...

Lexilux

Hey, thanks for the response! I'll do that. I haven't noticed excess bounce going over speed bumps, etc.

DaveGS4

iTrader: (2)

I was going to guess motor mounts. Then I read where you said that was something that changed and was when it started acting funny, I suspect it even more. Have both the motor and tranny mounts checked by a second party.

Lexilux

Thank you for your response! I actually had the mounts checked by another shop and asked them to look for pinched wiring.. They said they were fine but I don't think they are. I think the original shop either didn't get things seated right or they didn't install the correct mounts. I'm dropping it off at another shop today to have the mounts checked again. I'm SO frustrated....

Anyway, thanks again!

PS...car did pass the bounce test for the struts....

neegroy

iTrader: (19)

tranny mounts?@!

or

rear diff mounts??

GSGenesis

Or! Like Sicily suggested! Lol! The rear struts! Go back there and smash down see if you can get it bouncing...

Lexilux

Thanks guys! I dropped it off at the shop yesterday afternoon....will see what they say today..

I guess I might not have been able to push down on the bumper hard enough to properly bounce test the struts....I only weigh 100 lbs

Lexilux

Thanks! Mechanic says struts are ok but the transmission mount was weak so I had it replaced again and the car definitely feels better. He says my differential mounts are toast. Now, Lexus doesn't sell the differential mounts...you have to buy the entire differential for $1600! That's ridiculous but it is what it is. I know that I saw that someone on here was making/selling the bushings for the mounts so I will look in to that but since I forgot to ask him, can you guys suggest anything else I should look into replacing while the mechanic has the differential out? It's going to cost me $670 for him to drop the diff and replace those bushings so I want to fix anything else that is a maintenance part while he's got it out. Thank you to everyone that responded and for all your help!

marshun

figs engineering sells the bushings for the diff.

gsbs300

670 to drop the diff? You don't even have to drop the thing all the way.ive snuck them in there by just lowering it a tad.

Lexilux

Thanks for the info but when I looked at their website I only saw "Rear Diff Pinion Mount Modular Performance Polyurethane Bushing" and that doesn't look like what I saw on here? I don't know anything about this stuff!

Well, I am at the mercy of a professional because I sure can't do it. He says he has to take it out. I don't really see that I have much choice. I should have learned how to work on my own car when I was younger, lol!

If anyone has any suggestions for getting it done for less $$....I'm all ears! Thanks