I just recently put in fuel injector cleaner. now when i drive I get a vibration. the car idles fine. the vibration isn't that bad in 1st gear acceleration but when in 2nd and up, I'll take it to redline you can feel the car vibrate. the higher the rpm the more and louder the vibration is . when i take my foot of the gas it stops vibrating. when i rev it it doesn't do it. it seems to increase the more i step on the gas pedal. i figure it's not the motor cause it would do it when i rev it. i figure it can't be the suspension cause once i take my foot off the pedal it stops. I'm not getting any check engine lights or bad acceleration like sputtering when driving it.
the weather here is cold.
i'm just going to keep driving it till the tank gets low and fill it up again and see if it stops. any idea's would be great.

 

is it a rear vibration? could be your CV joint housing.



https://www.s2ki.com/forums/index.php?showtopic=275218

 

what makes them worn out? how long do they usually last? how do you know if there worn visually?

 

If you have a vibration when on the gas, and it smooths out right away when deceling, it's most likely the problem.

They can be swapped side to side, without buying any parts.

The earliest s2k I've seen with pitted inner CV buckets was XXX miles.

EDIT...just checked my notes...the record holder is 35k miles