5th gear shakes really bad when i gas.

droid · Postby **droid** » Thu Nov 20, 2008 9:14

FC RX7 is what i'm driving.

The 5th gear shakes really bad when i gas and more than i think a car should ever shake while in gear.
The funny thing is when i downshift, as i barely press the clutch in the noise supresses.

This shaking only happens at like 60+ MPH and stops when im around or under 50MPH.

Maybe a bad clutch job, flywheel? I dunno any tips would help but i blame the last mechanic.

Postby **RX-7 Chris** » Thu Nov 20, 2008 9:14

the shaking is most likely a bad u-joint. the noise is most likelly the cluch releace bearing.

droid · Postby **droid** » Thu Nov 20, 2008 9:14

Alright cool! I'll make sure to note that.
Thanks

Low Impedance · Postby **Low Impedance** » Thu Nov 20, 2008 9:14

the fun thing is the driveshaft has non replaceable u-joints

Postby **RX-7 Chris** » Thu Nov 20, 2008 9:14

so does mine but they can be replace at a driveshaft shop

droid · Postby **droid** » Thu Nov 20, 2008 9:14

ah fun, The guy who did my Clutch work said that i cracked my drive shaft and he replaced that. So you think it may be cracked now? tho back then my car wasn't as rugged as it is now.

Could it be installed wrong with missing pieces? cuz he really screwed me and i wouldn't doubt it

Postby **RX-7 Chris** » Thu Nov 20, 2008 9:14

I would start with looking at the driveshaft. You may get lucky and just have a loose bolt etc. Another thing it could be is that you lost a weight off one of the wheels or a wheel bearing going bad.

With the car jacked up grab the wheels and try to move them side to side, if you have any slack then it is a wheel bearing.

then grab the driveshaft and move it side to side, if it does the it is the u-joints. Also look to see if it could be missing and of the weights on the driveshaft.

droid · Postby **droid** » Thu Nov 20, 2008 9:14

Alright cool, imma go check it out. hmmm i think it is loose bearing around the drive shaft cuz i can hear everything cuz i have no boot around my stick shift. so i see right there down towards the drive shaft. Thanks, Ill do those when i lift my car.

Also related to the weird sounds im experiencing, i get this rubbing sound when i'm in low gear, like from 15-30mph, mainly in 3rd, 2nd and sometimes 1st if i drive slow. But that has to be slower than a regular accelerating driver.

I know i replaced the pieces invovled with the alignment and my tires are balanaced and new too.

Postby **RX-7 Chris** » Thu Nov 20, 2008 9:14

you may have something hanging down and hitting the driveshaft.

droid · Postby **droid** » Mon Dec 01, 2008 9:14

Yes i finally got my car into the shop and i got to look at the driveshaft.
It is the U-joint and they are able to replace it. They didn't seem like a big problem surrounding the driveshaft.

Thanks for the help again!

Postby **RX-7 Chris** » Mon Dec 01, 2008 9:14

glad it worked out

droid · Postby **droid** » Mon Jan 05, 2009 9:14

Hey i got this replaced and it worked out fine, but i have a technical question. It feels like it's giving out again due to knocking noises. I want to prevent but I have a camber problem on it. Would that have any effect since it is Wishbone suspension?

Postby **RX-7 Chris** » Mon Jan 05, 2009 9:14

it would. also check to see how the pumpkin is sitting. Something may be bent causing the center section to be tipped up or down. this would cause noise and loss u-joints.

droid · Postby **droid** » Mon Jan 05, 2009 9:14

yeah my driveshaft was spinning crooked. now i just assume it was gunna happen again.

i'm getting the Cambers bent back today, so i hope this prob doesn't persist.

5th gear shakes really bad when i gas.

5th gear shakes really bad when i gas.

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