Four problems related to manifold/header/muffler/tail pipe have been reported for the 2005 Toyota 4Runner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Toyota 4Runner based on all problems reported for the 2005 4Runner.
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. Cracked exhaust manifold causing excessive engine noise and exhaust fumes. This is a time consuming and costly repair.
Tl the contact owns a 2005 Toyota 4runner. While driving at any speed, the check engine indicator illuminated and remained lit. The vehicle was taken to ackerman Toyota (314-351-3000, located at 2020 hampton Ave, saint louis, mo 63139) where it was diagnosed that the air switching valves needed to be replaced. The vehicle was taken to an independent mechanic where the exhaust manifold and the air switching valves were replaced. The manufacturer was not made aware of the failure. The failure mileage was approximately 172,000.
Leaking exhaust manifolds due to faulty design this is on the v8 4runner. Exhaust will go into the cabin of the vehicle and smell like rotten eggs. Toyota will not help in the replacement of these manifolds. The charge is 2500 to replace. There is a technical service bulletin on this issue. It is hard to drive with exhaust leaking in the cab sometimes getting sick.
2005 Toyota 4 runner exhaust manifold cracks.