Ok I just picked up a 2000 4runner. It currently has a high idle around 1700 rpm. I have changed collant temp sensor and checked all vacume lines. Also have checked throttle body for play. Still no success. Also the 4x4 light is blinking. I've checked front drive shaft and it seems front diff still locked in. Just wanting to know where to start with the 4x4. Also the cruse control don't set. The light comes on in the dash but doesn't actually set.