Table 1 shows eleven common engine and engine cooling related problems of the 2005 Toyota 4Runner. The number one most common problem is related to the engine and engine cooling (eleven problems). The second most common problem is related to the manifold/header/muffler/tail pipe (four problems).
Head gasket failure. 2005 Toyota 4runner generation are notorious for head gasket failure. Due to the poor manufacturing of the gasket it has been deteriorating and has allowed coolant to leak into the cylinder causing misfires and possibly more damage internally. Read details...
Severe corrosion of frame at the rear body mount location. The body of the vehicle is no longer secured to the frame at this location due to the severe rust. Significant rust also on the front cross frame member which has the tow mounts rendering them useless and unsafe. Read details...
There is an awful rotten egg sulfur smell being emitted from my 2005 Toyota 4 runner when driving with back window open. After doing much research, I see there have been many TSB's issued for 4 runners dating back to 2003 and up to the 2006 models. Read details...