Not sure

[Corey]

ok i just got my car last fri but i just noticed this today.. when i start up it starts up fine.. but once i get rolling and go from 1-3 grand my car starts jumping in the back kinda like its my diff maybe? (89 240)

 

[S13<3]

maybe its time for coilovers huh!!!

 

[Corey]

really? i bought the car with eibach springs and kyb struts.. but coilovers would make it do that?

 

[al0389]

Might be time to get some diff mounts...

 

[S13<3]

u said the back was jumping around i assumed bad shocks/springs

 

[TeeWhyS13]

the kyb shocks are almost definitely shot on the car with those springs

 

[Wreck-It Ralph]

welded diff and different tire sizes?

bad diff mounts would make the drivetrain jump for the most part.

 

[Corey]

stock diff and diff mounts. same tired size

 

[BILLFISHER21]

Check For A Bent Wheel And Or Warped Tire Or Something Like That. Does It Smooth Out As U Go Faster?

 

[Corey]

yes.. it just seems like the rear in kind of jerks until i get past like 3 grand

 

[BILLFISHER21]

Get The Rear Tires Spun On A Balancer And You Will See If They Have Any Prob.

 

[Corey]

ok i figured out its not a diff. problem.. it has something to do with my motor.. it puts in low rpms between 900 and 2500 rpms and then goes away as i get to higher rpms.. my friend that came over tonight said it might be a boost leak but hes not sure. any suggestions?



sorry forgot to put this (blacktop SR)