All of a sudden I heard a whining noise that I had never heard in my 2008 Nissan Frontier 4.0 truck. The noise is new and over the last week or so, it comes and goes. Vehicle went out of warranty 2.5 months ago at 5 yrs 2.5 months old. 54500 miles on the truck. The whine pitch increases with engine speed. In neutral as you rev the engine you hear the whine noise go up and down with the rpms. Very disappointing to think I am stuck with a large $1500 timing belt issue with what I thought was a well designed vehicle from a company I thought I could trust high quality.

- Wichita , KS, USA

Trans cooler ruptured within radiator causing water/coolant to mix with transmission fluid destroying transmission.

- Seal Beach, CA, USA

Engine intermittently flutters while in gear. I bought this vehicle while still under warranty; however, while it was being driven around the dealership for service, etc. It went over the 60,000 mile warranty. The dealer said they would still look at the problem and suggested that it may need a throttle adjustment. After speaking with the mechanic he said the throttle was within range and it was reported to him that all Frontiers and pathfinders have that problem. Someone should be able to force Nissan to fix this problem.

- Melbourne, FL, USA

A whining or buzzing type noise has develop from the timing chain area caused by excess slack in the secondary timing chains. Nissan has issued a service bulletin (ntb09-128) regarding this issue. Replacement of both secondary timing chains and their tensioner shoes will be necessary to repair this concern. My 2008 Frontier has 89K miles on it (out of Nissan's 60K warranty) and has been whining for sometime now. Nissan knows of this problem per the previously mentioned tsp. It is my worry that if the chain breaks or fails while driving it the motor will instantly stop/fail and possibly lock up therefore putting myself and family and or others at great risk for injury.

- Northborough, MA, USA

I received a letter for a settlement offer from Nissan about the transmission cooler failure which leads to total transmission failure. I started to research what was wrong and what I can do about it seeing as my Frontier has 102,000 miles on it and is not covered by the settlement offer. As I did some research I found out about a symptom before transmission failure occurs which is at an idle you have a loss of heat until you rev the engine or start to accelerate and heat returns. I noticed that this had happened around November 2012 while I had left my truck running while parked for a few minutes which I normally do not do. I started to drive and the heat was working again so I thought it might have been a thermostat sticking and watched my vehicle for the signs of this to happen again. I did not notice anything happen again because I do not let my truck sit idle long enough until I tested it today and when I let it sit idle for a minute the heat stopped working properly and returned to normal function when I started driving it. I am trying to find a way to repair the problem before it gets worse but I do not know if I will be able to afford it. So as for the time being I will have to drive my only vehicle to work and hope the transmission does not fail completely and cause an accident or worse. Hopefully I can find a affordable repair or Nissan will be forced to repair it before someone driving down the road at highway speeds has this happen and us consumers suffer bodily injury or fatalities before they will do the honorable thing and admit their vehicle has faulty materials used in its construction and repair them. Only they will suffer in the end if they do nothing.

- Foley, AL, USA

Failed transmission twice due to leak of coolant caused by radiator leak. Occurred at 50K and 64K miles. First failure caused a delay after pressing accelerator allowing engine to rev before engaging when trying to accelerate from a stop. Both replacements covered by warranty.

- Beatrice, NE, USA