greenleg88 Posted November 25, 2010 Share Posted November 25, 2010 hello all, i know this is a subaru forum, but all the people over at toyotanation wanna talk about is fitting 22 inch rims on their corollas...so i figured id ask some real knowledgeable folks. on a 05 corolla automatic with ~60k miles my mothers car has recently developed a rumble/clunk/ vibration. it really wories here and i took a look at it. at first look, i started it up not expecting anything at all actually and i heard a low frequency clunk. it sounds like a big heavy piece of metal clunking metal. i thought theres definitely something wrong. i took a look at the front motor mount as the engine was shut of and started again and noticed a good amount of movement.. considering ive never looked at this part when there wasnt somethign wrong.. i guess i dont know if that was the problem... on a related note.. i hear this "clunk" when hitting large bumps in the road as well. but it has to be a decent sized pothole or dip. otherwise you cant hear the clunk. when i do feel the clunk, i can feel it through the brake pedal slightly.. which i guess could mean anything.... ive noticed this only happens really when the car is dead cold. when i first got in with the engine totally cold, i started and stopped and started again a few times and experienced the same clunking. but once the engine was warm and i tried starting it up a few times, i got nothing. and could not induce the clunk even by hitting bumps on purpose. usually if i hit a really big bump in the road after the car is warm, i can ever so slightly hear it. but it has to be a big buh bump.... could it be transmission mount? it doesnt vibrate the shift lever any more than normal.. i dont think.. thanks! shadowtag88 is online now Report Post Edit/Delete Message Link to comment Share on other sites More sharing options...
OB99W Posted November 25, 2010 Share Posted November 25, 2010 With your foot on the brake, does it "clunk" if you shift back and forth between reverse-neutral-drive? Link to comment Share on other sites More sharing options...
naru Posted November 25, 2010 Share Posted November 25, 2010 Seeing how the front mount has a good amount of movement,that is likely it.If you can put your hand on the mount while it is clunking,that will confirm the diagnosis. Recently did a motor mount on a Focus that was real noisy.More so when turning one direction in that case. Link to comment Share on other sites More sharing options...
Fairtax4me Posted November 25, 2010 Share Posted November 25, 2010 My sister has the same car. The front motor mount does move quite a bit. A clunk when starting would indicate something mount related though. Find a nice big prybar, and stick it between the block and the exhaust manifold. Then use it to pry the engine around while you listen for something to make an obvious noise. Do it with the engine off. Check the movement of all of the mounts (the ones you can see at least). You can also put the prybar close to each mount and move it around looking for excessive movement. Also check the exhaust system for broken/loose hangers. Link to comment Share on other sites More sharing options...
greenleg88 Posted November 26, 2010 Author Share Posted November 26, 2010 Thanks so much for the responses! ive been trying to get some help for weeks! i dont recall it clunking much if im just sitting still shifting through with my foot on the brake... but i feel like that was just circumstantial and i will try again... To the comment about the front motor mount likely being it because it moves a lot- I feel that perhaps i dont ever pay attention to how much it moves when i haven't heard the noise... and aside from it clunking only when it starts, it clunks when hitting bumps in the road so i dont think i could reach it... and lastly- i will try using a pry bar of some sort and checking movement. I assume it shouldnt be moving at all? at least not with the amount of force i can exert? Thanks! Link to comment Share on other sites More sharing options...
nipper Posted November 26, 2010 Share Posted November 26, 2010 When you pry, look for the points where the engine is bolted to the car. Watch them to see they seperate at all. Another thing I would check out would be the exhuast system banging on the car. If you can , have someone reve the engine while you have the hood open. Have them rev the engine and look for any unusual movement or noises. I have come across some posts on the passeneger side motor mount going bad for this car but I can't pin down on a when. Link to comment Share on other sites More sharing options...
OB99W Posted November 26, 2010 Share Posted November 26, 2010 i dont recall it clunking much if im just sitting still shifting through with my foot on the brake... but i feel like that was just circumstantial and i will try again... If it doesn't do it at idle speed, try again with left foot firmly on brake, right on accelerator, holding the engine revs a bit higher ("fast idle", about 1200 RPM). Doing that, there might be a bit of shift shock, but it shouldn't clunk if nothing's loose. Link to comment Share on other sites More sharing options...
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