Vibrations

GreeNeons03 · Post by **GreeNeons03** » Wed Mar 19, 2008 10:12 pm

Ok, so I've had this problem for a while now and getting my Motor mounts replaced doesn't seem to fix it, and they break again in no time. But while I'm sitting at a stop light with my foot on the brake, my car begins to vibrate a lot. It kind of starts out low then gets greater then back low and greater again, if you can picture what I mean. Anyway, if I shift into Neutral it stops even after I shift back to drive, untill I hit the next light. I don't think it's my mounts. Anyone have a guess as to what it might be?

snufflucks · Post by **snufflucks** » Wed Mar 19, 2008 11:04 pm

Is it actually just vibrations or does it feel like an Oscillation (giving gas then letting off the gas over and over)?

GreeNeons03 · Post by **GreeNeons03** » Wed Mar 19, 2008 11:12 pm

Its a vibration that Oscillates (that's the word I was looking for). It doesn't do it in park, neutral or reverse, only in drive.

snufflucks · Post by **snufflucks** » Thu Mar 20, 2008 1:57 am

There are so many unrelated things that can cause the problem you are describing that diagnosing anything like this over the internet is impossible.

jT · Post by jT » Thu Mar 20, 2008 6:14 am

tranny mount maybe.

i get mad vibrations also so much that my driver side mirror shakes rattles and almost rolls.. but have not done anything about it yet

BlackRoseRacing · Post by **BlackRoseRacing** » Thu Mar 20, 2008 6:32 am

What rpm are you idling at in D at a stop?

01WhiteNe0n · Post by **01WhiteNe0n** » Thu Mar 20, 2008 1:25 pm

I know what you mean mine used to do it but has gone away now.. It almost feels like the car is gonna stall, I would always put into neutral when I would hit a light or whatnot.

Since then I put in new plugs coil and wires had injectors cleaned, then I ended up getting my tranny rebuilt ( My own fault ) And no longer does it. I'm not sure which stopped it but for me i would of described it as a hesitation problem when it would drop in rpm the car would shake and feel like it was gonna stall and when in N the rpm would go back up.

GreeNeons03 · Post by **GreeNeons03** » Sun Mar 23, 2008 2:22 am

BlackRoseRacing wrote:What rpm are you idling at in D at a stop?

Around 800 or 900. Today it got down to 600 and vibrated worse than ever.

atom · Post by **atom** » Sun Mar 23, 2008 3:00 pm

Yeah thats a neon thing, I saw a member once claim it was a gas saving feature. Mine does the exact same thing to a T... put it in neutral and it stops doing it.

01neon01 · Post by **01neon01** » Sun Mar 23, 2008 4:01 pm

what mods do you have on your car? i cant remember where i saw it but i think it has something to do with the stock tb that makes it shake all crazy when at idle. anyways since i got my 60mm tb i no longer have that problem

MyNeonSaysHi · Post by **MyNeonSaysHi** » Sun Mar 23, 2008 4:33 pm

On my 01 it did the same thing after I added an intake and exhaust. I just put it in Neutral at stop lights. No problem.

BRAD727 · Post by **BRAD727** » Sun Mar 23, 2008 4:35 pm

mine vibrates all the time and i idle around 600 to 800 rpm i thinks it normal..

JCsrt04 · Post by **JCsrt04** » Mon Mar 24, 2008 8:28 pm

did you try cleaning the idle air control valve? may be dirty or sticky. Give it a shot!

GreeNeons03 · Post by **GreeNeons03** » Mon Mar 24, 2008 10:43 pm

01neon01 wrote:what mods do you have on your car? i cant remember where i saw it but i think it has something to do with the stock tb that makes it shake all crazy when at idle. anyways since i got my 60mm tb i no longer have that problem

None, The only thing I've done is remove the resonator and I did that Saturday.

JCsrt04 wrote:did you try cleaning the idle air control valve? may be dirty or sticky. Give it a shot!

I don't even know what that is. I don't know a whole lot about cars but I'm learning little by little. If someone can tell me what it is and where it is and how to clean it I could probably get it.

half_twisted · Post by **half_twisted** » Sun Mar 30, 2008 4:56 pm

a 60mm t/b should fix the low idle. mine does it also since i bought it at 42kml. and i have polyeurithane filled motor mounts that transfer the engines vibrations even more. took about 2 weeks to gets used to. now i dont even remember it until someone gets in my car and ask me why the car shakes.

JCsrt04 · Post by **JCsrt04** » Fri Apr 04, 2008 4:36 pm

Idle air control should be a module attached to the TB. it regulates the amount of air that is allowed into the motor while you are stopped (which keeps the RPMs within spec)
no real amount of time between cleaning, they just get sticky sometimes and rather than repalcing it, you can take it off and clean it.
http://forum.2gn.org/viewtopic.php?t=757&highlight=iac
6ths pic down, dirty TB Middle right side of it...thats the IAC

rseldner · Post by **rseldner** » Wed Apr 16, 2008 12:37 am

i have a similar problem on my 00. it shakes when i come to a stop...and if turn the wheel i bit it shakes more violently, and then stops. what the dealio?!