ok i have been searching for a week now and i cant find a thing and am gettin pisssed ...i have some vibration in my car it is not the engine,trans,diff mounts fan clutch or drive shaft.. it does it in neutral or well driving and thru the rpm range getting worse the higher it revs and it is worse when it is cold but still does it when warm just not as bad...... every thing is stock the only thing i can tthink of now is maybe water pump or air pump sumthin on the rotating assy. ???

 

engine rebuilt recently???

 

changed anything on the car recently? it sounds like driveshaft to me. how do you know it's not?

 

Vibration in neutral - I'd look real close at the fan blades.

Another possibility - debris in the bottom pulley.

 

maybe some of your clutch disc fragmented

 

or flywheel, maybe.

 

try this.....jackstand the car and put it in gear....spin it up to 40 MPH and shut off the motor and push in the clutch...now hear for ANYTHING rubbing/clanking/squeaking. Might help you to pinpoint it. Also try it without the clutch in with the trans in neutral. I hope this helps.

 

its it just a small viberation or more like a jerking if its small check your fan blades or maybe the belts messed up.

 

Read this it should help.

http://www.mazdatrix.com/g2.htm

 

damnit If there was rep points I give you 10....Great info....

 

You wrote: "...it does it in neutral..."

I once had a similar problem with my 90 GXL, and it turned out to be the transmission mounts. Would recommend that you check yours.

Hot_Dog
90 RX7 GXL
02 Acura RSX-S

 

well i have takin the fan right off and all ***. belts ...still does it !!
its not the rear end or u joints as i said it does it with clutch in or out and not moving
its the stock motor and the clutch was done 10k ago and the problem has just come up
ITS NOT A BIG VIBRATION just enought to reall y **** me off after a while
the trans mount look good and there is not to much play i ordered sum just cause it will elimenate that ..............if it was internal iam sure it would have gone boom by now ...the thing that gets me is it get better after driving for awhile ...but it is always there

 

ok guys found out what it is !!!!
turns out after days of f@#kin around i found out that the vibration is caused buy the chromolly surface in the rotor housing flaking off (high milage i guess) which would explain why the vibration get a bit better when it warms up ...the layers exspand and contract ....so i dont have much life left in this motor.... all the seals are still good so meh whatever ....figure i will build a motor up real nice for a na project s5 lighter rotating assy. 93 tt housing , street port, and better oil pump should be just fine for me anyways thanks for all ur help guys