extreme vibrations?! help! might be serious!

[jay92889]

i slammed my car into a curb last month. it actually slid (it was almost parallel with) the curb and hit the drivers side, and i was going about 20mph.

it was enough to damage a lot of shit!

so far i had replaced everything that was visibly damaged:

lower control arm
subframe (new one bolted right in perfect, so no frame damage there)
shock + spring
stabilizer bar bushing, although the bar might be a tad bent. (holes don't match perfectly)
axle + cv joint. (i guess it go compacted a bit into the trans enough to tear the boot/leak grease)
steering rack + all tie rods (didn't need to but might has well have.)

i replaced everything on the side that took the impact (drivers) short of the spindle and upper control arm!

anyway, other than the car's SORE need for an alignment/tires, for SOME reason when i'm in drive accelerating going from 800-1300rpm the whole car kinda vibrates wildly!

it didn't do this before at all.

i know my idle is a bit low (500) so i thought i'd do a test and hold the brakes and rev to an appropriate idle rpm to simulate how it would be and rule the idle out as a culprit and it's still BAD.

once i pass that bad rpm range it's still a little coarse, but maybe that's just me. it's pretty bad from 900-1400ish. it's even worse when i'm just idling in drive and it idles at about 500.

what the hell is up with it?! the trans shifts the same. car sounds the same.

is this possible a mount issue?!

revving the engine in park or neutral it's smooth, so could it be that i damaged the mounts and the engine is just actually that rough when it has the load of being in gear and the mounts absorb it?? i know my front mount is shot and my rear mount is torn in half, the left side one doesn't look so good either but i don't think thats the reason! it just doesn't feel like a mount issue, but maybe you all could give me advice or things to check!


thanks in advance!

-jay

[Losiracer2]

i slammed my car into a curb last month. it actually slid (it was almost parallel with) the curb and hit the drivers side, and i was going about 20mph.

it was enough to damage a lot of shit!

so far i had replaced everything that was visibly damaged:

lower control arm
subframe (new one bolted right in perfect, so no frame damage there)
shock + spring
stabilizer bar bushing, although the bar might be a tad bent. (holes don't match perfectly)
axle + cv joint. (i guess it go compacted a bit into the trans enough to tear the boot/leak grease)
steering rack + all tie rods (didn't need to but might has well have.)

i replaced everything on the side that took the impact (drivers) short of the spindle and upper control arm!

anyway, other than the car's SORE need for an alignment/tires, for SOME reason when i'm in drive accelerating going from 800-1300rpm the whole car kinda vibrates wildly!

it didn't do this before at all.

i know my idle is a bit low (500) so i thought i'd do a test and hold the brakes and rev to an appropriate idle rpm to simulate how it would be and rule the idle out as a culprit and it's still BAD.

once i pass that bad rpm range it's still a little coarse, but maybe that's just me. it's pretty bad from 900-1400ish. it's even worse when i'm just idling in drive and it idles at about 500.

what the hell is up with it?! the trans shifts the same. car sounds the same.

is this possible a mount issue?!

revving the engine in park or neutral it's smooth, so could it be that i damaged the mounts and the engine is just actually that rough when it has the load of being in gear and the mounts absorb it?? i know my front mount is shot and my rear mount is torn in half, the left side one doesn't look so good either but i don't think thats the reason! it just doesn't feel like a mount issue, but maybe you all could give me advice or things to check!


thanks in advance!

-jay

um, I think in your last paragraph...you figured out your problem, get new mounts and you should be fine. If its vibrations on idle, then yeah its definitely mounts. If you see that they're torn/ripped, definitely bad mounts. Now's a good time to get ES inserts, they can be used w/ torn mounts and work perfectly fine, since they fill the void in the mount w/ the Polyurethane.

[jimy]

I wouldn't be driving a car with bad motor mounts anyways.

[jay92889]

um, I think in your last paragraph...you figured out your problem, get new mounts and you should be fine. If its vibrations on idle, then yeah its definitely mounts. If you see that they're torn/ripped, definitely bad mounts. Now's a good time to get ES inserts, they can be used w/ torn mounts and work perfectly fine, since they fill the void in the mount w/ the Polyurethane.

right, but my question is could the mounts be doing this or is it probably something more serious, and if so, what? i know i've had at least the front mount shot before the accident and it wasn't bad at all before that.

you'd figure while you're accelerating at 1-1.5k shitty mounts or not, the engine in gear would be able to remain smooth, right?

at 500rpm idle in neutral, it's pretty good. at 500rpm in gear it's HORRIBLE but probably since the idle is too low, so gassing it a little with the brake held at 900rpm where idle should be it's COARSE like a mother and that's where the problem lies.

it doesn't really feel like a mount issue, but i'll try and have them replaced.

what else is a possiblity though? transmission damage maybe?

thanks for the help so far!

[AD5OS]

Sounds like a bad mount to me too. I bet you are getting some good clunking when the tranny shifts too. Is it any worse in reverse?

[champagneaccord]

Couldn't the tranny have been damaged too?

Like the axle housing area shifted or something? (From when the axle got compressed)
Just a thought

[92Inspire]

very likley. id check it out or have someone check it out. your gonna need to take out your axle and check out the race inside the trans where the axle goes and the splines. did you check your hub or hub bearings, and rim? but like everyone said if your mount is that bad i replace it anyway. im one to talk, all my mounts are bad i have so much play my exhaust moves an inch and a half with the idle in park. good luck man.

[Losiracer2]

yeah it could be something else, but on a normal not crashed car, the mounts are usually to blame since that's where all the vibrations are usually dampened on idle. Are you leaking any tranny fluid? or any other kind of fluid?

[turbo90accord]

imma say bad trans

[alkoholikwun]

definitely check your motor mounts, and an alignment is a must.

[turbo90accord]

motor mounts may attribute to some vibration but being that you say its smooth in neutral and at a stop when revved makes me thing its something to do with the drive train under load.

[jay92889]

motor mounts may attribute to some vibration but being that you say its smooth in neutral and at a stop when revved makes me thing its something to do with the drive train under load.

sorry guys, I had a terribly busy day yesterday. mainly stuck at the junkyard without a ride, as my car still needs a lot of suspension work! they really rob you blind for pumps, they want something like 40$ for a steering pump without core, but alternators are only $14?

to answer questions:

i am getting clunking when i shift from neutral to reverse, to answers ad505's question. also when i accelerate, coast, and get back on the gas rather aggressively you can hear it clunk again! we can certainly attribute this to the mounts, or at least the front one for now. that's a little strange though, the front mount was bad before the accident and did not clunk, so i'm beginning to think more and more it's another mount that went bad and is causing this.

there aren't any trans leaks. a bit of oil here and there, but nothing much to raise any concern.

i didn't notice anything out of the ordinary inside the trans axle housing when i replaced the axle, though it wouldn't be a bad idea to check again if the problem persists. i haven't checked my hub, bearing, or rim as the problem doesn't require the car to be moving to be noticed.

"motor mounts may attribute to some vibration but being that you say its smooth in neutral and at a stop when revved makes me thing its something to do with the drive train under load."

i really believe you're right about the drivetrain under load. since i have three definitive bad mounts that are ripped or torn, there's less tension on the engine to keep it tight in the bay, so wouldn't that actually allow it to only IDLE smoother? that fact it idles and revs smoothly might be misleading since there's much more play in the mounts for it to move around. for a 500rpm idle, it's pretty smooth. possibly too smooth?

while i was at the junkyard i was able to pick up a front torque and rear hydralic engine mount that were NEW on one of the cars before it totalled (that's got to suck) for about $10 EACH! i'll have to put these in and check/replace the side ones as well. money is a bit of a large issue right now, and i've got much more pressing things to sort out on the car before i can get to this, nevermind college and everything else, but i'll certainly let everyone know how things go when i get to that point!

thanks for all of the input!

-jay