Hi Richard, welcome to the forum, thanks for the donation. Did you mean Corolla, I didn't see a corona listed in our database, maybe I just missed it? I would have the suspension checked. I did look up service bulletins for your suspension, I didn't see anthing that caught my attention. If your suspension is electronically controled, You might have the codes checked, see if it shows anything?
Wednesday, November 18th, 2009 AT 2:32 PM