I have a 90 Civic Si w/ a B16 w/ hydro tranny. Under normal accelaration I have vibration in 2nd and 3rd gear. I changed the transmission thinking it was that. I also replaced the axles w/ hasport hydro axles and also replaced the lower ball joints and all the bushing in the lower control arms w/ energy suspension bushing. Check all suspension componenets, nuts bolts etc... Balance the tires twice and also had the car aligned. But I'm still having the same problem. What else could it possibly be? Wheel bearing, tie rods, differential bearing, transmission differential itself?

 

Checked the radius rods too??

 

check your rear subframe. near the rear motor mount. probably cracked.

 

Will check it out this weekend. Thanks

Will check this out also. Thanks

 

Hope you find it man, that must be really frustrating.

 

Yeah man really sucks. i hope i solve the problem. Anyone else with suggestions please let me know. Thanks

 

as far as i know this could be wheel bearings too.

 

Thanks. I'll check this out also

 

Check your half shaft

 

I have changed the half shaft also.Thanks for the suggestion though.

 

i had the a similar problem with my crx i changed my inner and outer tie rods and my mounts and it worked out but it could be anything really hope you find it man i know the feeling

 

Thanks man. Im going to change the tie rods and probably change the wheel bearings. Hopefully this will fix the problem.

 

Bump for any other solutions

 

Radius rod bushings.