Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety. Notes: The 2005-2007 Pathfinder appears to have a widespread defect where coolant leaks into the transmission, causing transmission failure around 90,000 miles. Repair costs are typically upwards of $3,500.

According to the New York Times & a class action lawsuit, the defect actually extends through 2010 model year. More info here.


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
103,441 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2007 Nissan Pathfinder engine problems

engine problem

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2007 Nissan Pathfinder Owner Comments (Page 4 of 5)

« Read the previous 20 complaints

problem #24

Jan 282013

Pathfinder 6-cyl

  • 106,000 miles


After a 90K mile check-up and full service in spring 2012, I understood that my Pathfinder was running well. Never was there a mention of issues with the radiator / transmission, nor was the connection between these elements replaced to prevent an issue (to my knowledge.) at 101K miles, the heat went out in the rear section of the car (I did not realize this until two months had gone by and I was arguing with my freezing child in the back seat that I had his heat as hot as it would go - he was clearly correct and the rear blowers were blasting him with icy air.) there was a "clunk" upon shifting the car into reverse, and between 40 and 60 mph the transmission lagged and sounded like it was grinding and working hard. At 106K I brought the Pathfinder to the Nissan dealer where I had originally purchased the car. This was the same dealer who had done the 90K service, as well. They determined that the radiator fluid had mixed with the transmission fluid and that my car needed both a new radiator and transmission for $9,000. (my truck is maybe worth $15,000 at this point - really?) after deliberating with the service supervisor, he offered an alternate option of only changing the radiator and flushing the transmission several times to eliminate the contaminated fluid. I gave the ok for this service option at $600. Since the service, my transmission is still lagging between 40 and 60 mph and the "clunk" still happens during a slow reverse. I am now investigating my options for a new transmission as the vehicle is still in beautiful shape, other than its engine issues. It is my belief that this issue is wide-spread enough that the transmissions and radiator should be recalled and replaced by Nissan - or paid for by Nissan since it's their faulty parts that cause the problem.

- Charlotte, NC, USA

problem #23

Jan 012013

Pathfinder 6-cyl

  • 98,000 miles
The radiator fluid is leaking into the transmission fluid and causing significant "rumbling" noises. The vehicle does not shift correctly.

- Davidsonville, MD, USA

problem #22

Oct 112012

Pathfinder 6-cyl

  • 106,000 miles
The fuel gauge stopped working over a year and a half ago. When we contacted the dealer they never told us about the extended warranty. They quoted a price that we, a military family could not afford, and that was it. Then last year, a shuddering began. We took it to the dealer and spent almost $800. They flushed the transmission, but the shuddering only got worse. When I took the car in they informed me that the radiator fluid leaked into the transmission and now both need to be replaced. I called Nissan and they basically said that its my problem!! I have been in tears since. My husband is in afghanistan fighting for his country. He worked hard and paid the car off 2 months ago and now this. He is so worried about us being stranded when his Focus should be on what's happening there. We don't have $8000 to spend on a car that we just paid off and that should be in top form.

- Macon, GA, USA

problem #21

Jan 142013

Pathfinder 6-cyl

  • 130,000 miles


When slowing down or speeding up between about 30-50 mph, the vehicle transmission felt like it was slipping. After much research and several hundred dollars of work come to find out that the radiator is faulty causing cross-contamination between engine coolant and transmission fluid. I am aware there is an ongoing investigation into this matter as well as a class action law suit pending. I have spent significant money to troubleshoot and replace what was needed (radiator and multiple transmission flushes) and feel I should be reimbursed as well as have a more thorough inspection and additional repair/replacement if needed. I am concerned that the engine is now damaged due to transmission fluid being in there and possibly the transmission. Both of which may be future problems that materialize down the road. Something should be done to make this right for the many Nissan customers.

- Point Pleasant, NJ, USA

problem #20

Feb 222013


  • 10,900 miles
I bought a 2007 Pathfinder from a very reputable used car business, carmax almost 3 years ago. They are very well known in the area for thoroughly checking their vehicles before reselling. It had approx 59K miles on it and I've loved it until recently. I started experiencing heating problems awhile ago but my mechanic couldn't find anything wrong - he even checked the radiator. A few months ago, the transmission would shudder occasionally when I reached about 40 mph. At first it was very minor, I actually thought it was maybe grooves in the road, etc but the issue got worse. I brought it to the dealer and was told I need a new radiator and transmission - this is a widespread problem. I was also told flushing the transmission probably wouldn't help. The radiator is going to cost me $913 and because this is such a widespread problem, a new transmission was the only thing they could find at $7400! I still owe on this vehicle and am wondering how will I ever trade this in or even afford to fix it. Nissan won't help in any way, even by discounting the labor and parts and the class action settlement won't help either because my Pathfinder has 109K miles on it - 9K over the extended warranty Nissan issued. What a disaster. I'm a single mom with a young daughter and a mother I care for. I recently took my family to visit my sister in West Virginia, you know - mountains. Imagine if something would've happened then. I had no idea all of this was going on and am now terrified to drive it. I've never received notification from Nissan that there was a potential issue - I would've brought it to the dealer immediately and been covered for repairs!!! this is a nightmare and Nissan should be held responsible in some way. Why aren't they standing behind their product at all!! do a couple of hundred people have to get hurt before something is done?

- Prince George, VA, USA

problem #19

Mar 042013

Pathfinder 6-cyl

  • 150,500 miles
My wife was driving home from picking up our children from school. She was traveling approx 65 mph when the vehicle lost power, became unstable, and would not accelerate. She said that it was like someone put on the emergency brake with five times more. Force than normal almost causing her to loose control of the vehicle. Upon taking the vehicle to a repair shop the problem was found to be that coolant had leaked into the transmission and had destroyed the transmission computer and the transmission.

- Gallion, AL, USA

problem #18

Feb 222013

Pathfinder 6-cyl

  • 35,500 miles


At 35,500 miles the secondary timing chain tensioner shoes failed. The dealer told me that this is a very common problem with the 4.0L motor. This repair is $1000 and not covered by any remaining warranty. I believe that since thousands of people have had to pay thousands of dollars to repair this defective part it should be a recall. This would be dangerous if this failed while the vehicle was moving at highway speeds, luckily I was driving slow enough to avoid an accident.

- Bayfield, CO, USA

problem #17

Oct 032011


  • 90,000 miles
Pathfinder started hesitating at 40 mph regardless of city or highway driving, had transmission fluid changed and was advised by my mechanic there is a leak from radiator into transmission line, have since then seen transmission fluid a milky color and I cannot drive vehicle with overdrive on, when it drove with od on at about 40 mph there is no shifting of gears.

- Joplin, MO, USA

problem #16

Oct 172012


  • 101,000 miles
The contact owns a 2007 Nissan Pathfinder. While driving approximately 55 mph, the vehicle began stalled while the contact was attempting to accelerate. The vehicle was taken to the dealer for diagnostic testing. The technician advised that the valve body and radiator needed to be replaced due to a leak in the radiator and the coolant was intermixing with the transmission fluid. The manufacturer was made aware of the failure and advised the contact that the vehicle was not included in any recall. The vehicle was not repaired. The failure mileage was 101,000 and the current mileage was 104,000.

- Memphis, TN, USA

problem #15

Nov 022012

Pathfinder 6-cyl

  • 84,000 miles
First issue started while trying to accelerate onto the interstate. The car/engine started shaking between 40 and 50 mph and would not accelerate. I was nearly rear-ended when I had to merge into traffic. Other issues were similar, car shaking at 40 to 50mph, like driving over a washed out road. Unable to accelerate initially, this would last for several seconds, before finally responding, shaking would go away when speed would exceed 50mph. Final safety issue occurred when accelerating after a stop light onto a highway ramp. At 40mph the transmission completely went out, the car would not shift into gear and would not accelerate. I had just started to merge, I had to swerve back onto the ramp lane and stop in the middle of the road. I was nearly hit by the highway traffic and almost rear-ended by a car going back into the ramp lane. Cars were forced to slam there brakes to avoid hitting my dead car, it also made it very difficult for other cars to merge onto the highway, several cars narrowly avoided an accident. Car was taken to shop, transmission and radiator had to be replaced. Radiator defect had caused the transmission to fail.

- Highlands Ranch, CO, USA

problem #14

Mar 032012


  • 122,123 miles


The contact owns a 2007 Nissan Pathfinder. The contact stated that while driving 45 mph, the vehicle began to jerk and shimmy abnormally. The vehicle was taken to an independent mechanic for diagnosis and the contact was informed that the radiator malfunctioned and leaked anti-freeze into the transmission. The vehicle was taken to a dealer for diagnosis where they also advised that the radiator failed and was leaking anti-freeze into the transmission. The manufacturer was notified but offered no assistance. The vehicle had not been repaired. The failure and current mileages was 122,123.

- Shirley, AR, USA

problem #13

Oct 122012

Pathfinder 6-cyl

  • 100,433 miles
I was driving at 30 mph and the Nissan Pathfinder 2007 start making a noise in the motor like when you have the car in 1 but it was on drive, then the service engine soon alarm appear. I parked the car but when turning on again it didn't. the dealer said that the radiator coolant damage transmission and the computer because was damaged. The estimated cost of the repair was $9,400.

- Humacao, PR, USA

problem #12

Sep 192012


  • 91,000 miles
I started having a sudden jerking in my 2007 Nissan Pathfinder when driving down the highway. When I took it into a Nissan dealer they diagnosed the problem as a failure with the radiator internally and externally which allowed leaking coolant into my transmission fluid causing both radiator and transmission failure. The dealer now states that I need to replace both items or trade it in..... come on Nissan you have a major problem. We need a recall.......

- Baxter, MN, USA

problem #11

Sep 202012

Pathfinder 6-cyl

  • 97,000 miles
Radiator defect leaked coolant into the transmission caused transmission to fail; will need a new radiator and transmission because of this known defect in the radiator. Also, engine timing chain defects in 2005-2010 Pathfinders. Repairs are set to be $12,000 - which is more than the value of the vehicle.

- San Diego, CA, USA

problem #10

Sep 142012


  • 85,000 miles
I was driving on the freeway when all of a sudden I heard a thud and lost power, had to go over 2 lanes without being hit.... I took it to the shop and the mechanic new excactly what the problems was. Radiotor fluid getting into the transmission causing it to fail... hundreds of Nissan Pathfinder owners are having this problem. Tell Nissan to recall this now before someone gets killed.. shouldnt have to pay $8000 for Nissan crappy work..

- Waipahu, HI, USA

problem #9

Aug 292012


  • 160,000 miles
My Pathfinder was should have been slowing from the speed of as I was braking and letting off the gas, but it kept moving forward and shaking. If there was a car in front of me I would have hit them hard. My transmission would not shift down to slow down, due to radiator leaking into transmission. The cost of my repair of both radiator and transmission is over $5000.

- Davenport, FL, USA

problem #8

Aug 022012


  • 92,000 miles
While driving down the highway my husband and I experienced loss of power and had to pull onto the side of the road. We were towed from there to the mechanic who explained to us that the internal radiator had leaked fluid into the transmission causing failure to both. Since our warranty was outdated we are now out 6000$ and are struggling to fix this. I am very frustrated and disappointed in the vehicle. We had our children with and I am very glad that we were not at a busy intersection or interstate.

- Marne, IA, USA

problem #7

Sep 282010

Pathfinder 6-cyl

  • 86,922 miles
Start having problems in mid July of 2010. Transmission was jerking in gear. Radiator broke down, allowing fluid to leak into the transmission. Vehicle is inoperable. Also been having problem with fuel gauge. Unable to get vehicle repaired, due to limited income. Vehicle became inoperable passed extended warranty.

- Riverdale, GA, USA

problem #6

Mar 122012


  • miles
At first started noticing hesitation in transmission at 40 mph, confirmed by 2 mechanics trans fluid is milky color and changed fluid at a local service station that had to go to Nissan and get their transmission fluid to finish job. Now back to milky transmission fluid, have to take overdrive off because gears will not shift, I also carry gallon of water because at any time radiator fluid levels can be low; have to turn air off at long stop lights so temp gauge doesn't go up.

- Joplin, MO, USA

problem #5

Jul 222012


  • 133,000 miles
While driving with the ac on, my vehicle started to blast out hot air through the vents and overheat. My car has never ran hot before, I haven't had any problems since I've had it. I was able to pull over safely and let the car cool down. My husband removed the radiator cap and noticed a milky liquid in the radiator. We had to have the vehicle towed to a mechanic shop and they notified us of the recall on the Nissan (2005-2010 models) radiators. They said that it was a common problem that they have been seeing where the coolant mixes with the transmission fluids and cause a major repair problem. We have been told that the radiator, transmission, transmission kit, throttle, vial body, and torque converter will have to be replaced. I feel petrified to know that Nissan knew about this existing problem but refused to have these issues repaired rather than taking the easy way out and extending the warranty. We bought our truck brand new from the Nissan dealership and we also paid for the 5yr/100,000 mile warranty. I have had my truck for 5 yrs and 2 mths, something should have been done about this. We the consumers have trusted this brand for many years and we depend on our vehicles on a daily bases. My family and I were all in the vehicle when the incident happened we could have been seriously harmed in a high risk situation. We had the 90,000 mileage maintenance completed where they flushed the radiator, changed the transmission, & etc. And everything was fine. My husband have always taken my car in for timely maintenance and no one has ever mentioned the radiator issues.

- Duluth, GA, USA

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