Timing Tensioner problems of the 2005 Nissan Pathfinder

The vehicle was making a high-pitched noise during acceleration @ apprx. 2000 rpms. Additionally, I had recently noticed sluggish and uneven acceleration. Upon taking it to the dealer, I was informed that there was a problem with the inner timing chain and tension guide/shoe, a worn drive belt and drive belt tensioner, and a stuck fan belt clutch. In addition, I was told that there is also potential damage to the inner timing cover. Nissan is aware that there is a defect with the timing chain and tension guide/shoe. The defect could cause the timing chains to slip - which would lead to immediate engine damage - and create a potentially dangerous situation in traffic. In addition, the faulty part could cause other engine issues (like the ones reported).

The vehicle started to make a whining noise under throttle but was not initially identified as a significant problem. It was assumed to be a belt or belt pulley. Approximately 2 weeks after the noise started, the timing chain developed a problem and loud rattling noises could be heard from the engine. The sound was a sloppy rattle consistent with a timing chain tensioner or guide broken.

Oil pressure dropped while driving due to timing chain tensioners and guide failure. If complete failure had accured, motor could have blown or locked up causing accident.

I own a 2005 Nissan Pathfinder se, 4. 0 liter v6 with 53,000 miles. I just had to replace the timing chains, timing chain guides, and timing chain tensioners. I was driving on the freeway when the problem occurred and had to have the car towed home. The dealer wanted in excess of $2,500. 00, I had the work completed for $1,800. 00 with another source. I have come to find out that this is not an uncommon problem with this vehicle and Nissan refused to do anything about it. I contacted Nissan north America and was told that while my car has under the 60,000 mile warranty limit, I was over the 5 year limit by 7 months.