Recent content by yota4R

Do you guys think it may be spark plugs?

Maybe bumps may not be the best description.... It is like a forward and back jerking motion.

None :/ At first I thought it may be a tire balancing problem, since I heard that our 4Rs are lug centric vs. hub centric and are often not properly balance, but than I realized that if that was the case, the bumps would be more severe as I go faster.... but the problem only occurs as I...

I have a '00 4R that has these vibrating bumps every 1 to 2 seconds (not continuous vibration) as I reach 60 mph to 70 mph... if I go slower or faster, the problem seems to go away and seems only to be in that speed range. I've searched the forum but most people are reporting problems with a...