Two problems related to steering rack and pinion have been reported for the 2006 Toyota Tacoma.
Whiled I was driving I went over a bump in the road. The fan on my truck started making a loud noise. I took the vehicle to a repair shop to be checked. This I when I found out that the frame on my 2005 Toyota Tacoma was cracked and caving in where the motor mounts attach to the frame. This caused the motor to drop down and the fan started hitting on the shroud. Also it pierced a hole in my upper oil pan when the motor dropped down and hit the rack and pinion. Upon research there are many many cases of this happening to the 2005 -2006 Tacoma trucks. This is clearly a safety issue that Toyota refuses to fix.
Front suspension instability, I have replaced the tires two times, and have replaced the oem shocks for the bilstein "oem trd" but the vehicle behaves like the front sway bar or the rack & pininion are loose. I have taken this vehicle to the dealer countless times but they are unable to notice the noise that comes from the front suspension or anything wrong. It is my perception that a design flaw or a defective part of the front suspension or rack & pinion have to be causing all of the instability. I really consider this vehicle very unsafe and hope to find the problem withim the next couple months or I will replace it for a tundra.