Problems with 2007 Nissan Pathfinder ENGINE AND ENGINE COOLING

I drove 2hrs away to pick up my niece from college. the vehicle was fine on the freeway, but as soon as we exited, it started to sputter. we were very close to campus so we pulled in and made it through a couple more stop signs before we pulled into a stall and parked. it would not start after that. i had to tow it back home and to the dealer ship where i was told that a problem in the radiator caused fluids to mix which shot my engine. now nissan wants to charge me $7650 for a radiator and transmission. that's ridicules considering nissan knew these vehicle had faulty radiators in them. this could have been very dangerous if this occurred on the freeway! *tr

Car would not engage in reverse. the problem was diagnosed as my transmission failing due to design flaw that allowed radiator cooling fluid to leak into the transmission. i had to replace the transmission at a cost or $3,400. the car warranty had run out and i was not reimbursed by nissan. nissan has not recognized that they have a design flaw issue that is costing their car owners thousands of dollars in repairs as well as ruining their reputation. *tr

Tl* the contact owns a 2007 nissan pathfinder. while traveling 40 mph, the contact noticed a grumbling sound coming from under the vehicle. the vehicle was taken to the dealer where the contact was informed that the radiator was leaking into the transmission. both the transmission and the radiator were replaced. the current and the failure mileages were 87,000.

Heating system is not working. very often while driving the car, it will make a strange noise coming from under the hood followed by a vibrating/shaking movement from the same area. the speedometer has also at one point failed to move, it was stuck on the zero mark. *tr *js

This experience has been absolutely terrible. i am a mother and drive to all of the activities everyday which adds immense stress on me everyday knowing that any second my car will break down leaving us stranded. i bought my pathfinder used from the nissan dealership and have barely owned it for 2 years. i took it into the dealership after it was running at 40mph and would not let me accelerate and making crazy grinding noises as though i were riding on the road shoulder. the dealership informed me that it wasn't a problem with my transmission but my radiator leaking coolant into the transmission which as a result ruined the transmission. having done research on the issue i have read that it is a common issue with these models and that nissan corporate is well aware of and refuse to do anything about it. this is a great big safety issue imposed on my family and i am terrified to even drive. i am upside down on my vehicle and cannot trade it in on a new vehicle and am left with my hands tied. i am joining the other millions out there filing a class action suit against nissan in the hopes of resolving this issue. *tr

Tl* the contact owns a 2007 nissan pathfinder. the contact stated that while driving approximated 45-55 mph, the vehicle gave a hard surge. the vehicle was taken to the dealer and a diagnostic was performed, which located as the radiator fluid contaminating the transmission. the transmission and the radiator would need to be replaced. the vehicle was not repaired. the manufacturer was not made aware of the failure. the failure and the current mileage was 85,000.

My wife was driving my 8th grade son and his basketball team to middle school game. she was on the freeway going 65 mph, when she felt the car jerk and then start to lose speed, the engine was still running but the car had slipped out of gear. she had no power and luckily she had room to coast to the shoulder. we took the car to the dealer the next day they diagnosed the problem as transmission failure due to radiator fluid in the transmission. we replaced the radiator and coolant lines and flushed the transmission, and it ran fine for a few months. but the check engine light came back on last month, we took it in and now they tell us that we have to replace the transmission. please investigate this issue with the nissan pathfinder, frontier and xterra. it seems to be more and more of a common issue with nissan owners and nissan is not doing anything to repair this very serious and costly problem. i just got an estimate on tuesday (9/4/12) for $9459.00 worth of repairs to the transmission and the radiator. i bought the car new from nissan, and it now has 110,502 miles. *tr

If you are not already aware, there have been many problems concerning this vehicle, which are almost all similar to each other. personally i have been experiencing transmission problems which range from: rough engine vibration at 40mph, and 60mph, thermometer spikes when accelerator is engaged at 2500+ rpm, violent jerking of car, loud engine fan, and most importantly loss of forward acceleration when actively pressing on gas pedal. i brought this to a nissan dealer to have this diagnosed and they have confirmed that my initial worries were correct. a defect during manufacturing of this vehicle has caused radiator coolant to leak into the transmission or vice-versa causing the deterioration of both systems. this in turn correlates to engine overheating and many other problems while driving this vehicle also the housing of the timing chain is non-existent. the vehicle diagnosis and price quote for repairs nears the $10,000 mark.a price which is almost half of what i purchased the vehicle for. as of yesterday 3/17/12 my vehicle has lost acceleration power. *tr

The check engine light stays on the car. also, the fuel delivery system has become a significant hazard in the car. the pathfinder's gasoline gauge indicates that it is half full, but suddenly the yellow light comes on to indicate the car is empty. this is a significant hazard while on the highway and there are times where a gas station may not be easily accessible. *tr

It was november 2011, i was driving my nissan 2007 at that time i was 9 months pregnant. my daughter who was 5 years old was with me. i was entering the freeway when my car started to shake,make noises and it started to slowdown on its own. i presses the speeding pedal but it kept loosing power. my daughter was crying because she was scare. i was crying too i did not know what to do i was in a dangerous situation because it happen when traffic was at its pick. i could not stop because cars where behind me and i could not speed because my car was loosing power and it smell like something was burning. i manage to get off the freeway with the emergency lights and stop the car at the moment the car die(no power). a tow truck had to take as home. nissan would not fix the problem because of the miles/warranty whichever comes first rule that they have. they would fixed for a lot of money anyway i took it to a shop an i was told it was the radiator which damage the transmission. i had it repair and a few days latter all the emergency lights on the car turn on and went crazy and the car stop at ones this time it was the gas tank. it scare me so much that i call my husband and told him, "this car is going to kill me and my children" nissan pathfinder is dangerous and something must be done or someone is going to get kill. it is a safety issue please help us. do something we need help pathfinders are dangerous nissan won't fix this factory problem with out getting pay. please a recall needs to get done. i beg you do something this is the usa or not? i know at list 3 more people that had the same problems with this cars and all the mechanics agree that it is a factory problem. i will never buy a nissan it is a lemon! first radiator linkage then liquid in transmission then replace transmission than it will be the gas tank what is next? *tr

I haven't finished paying off my car and already the transmission of my nissan pathfinder 2007 xl is failing. the radiator spilled the cooling liquid into the transmission, which then proceeded to cause serious problems to the transmission. the guaranty expired after 100 000 miles, even though prior to that the mileage the guaranty still applied. now, in order to fix the transmission, or replace it for a new one, will cost me over $5000usd. i'd like to unite to the existing complaints/lawsuit against nissan on the matter of the faults found in the 2007 nissan pathfinder, as i feel that is unfair that the company with the knowledge of fault in its product has not warned the public and has proceeded to sell the product to the public, leaving us with a faulty machine that in the end is more expensive, and not a satisfactory product. i am hopeful that the company will response to all of our complaints, stepping forward and taking responsibility for the inconvenience they have caused, and hopefully taking ownership of the expenses that due to their lack of responsibility, have been incurred on to us, the consumers. *tr

As i was driving my 2007 nissan pathfinder (120,000 ,miles) through a busy intersection, i lost the ability to accelerate at all. after a very frightening couple of minutes i was able to steer the vehicle through and coast down a small incline to a nearby parking lot. after threedays our local mechanic determined that he was unable to fix the car, as he concluded that the ecm had failed. the vehicle was towed to the local nissan dealership, who agreed that the problem was the ecm ($1014 repair). after three more days, they've now told us that the problem is not the ecm, but the fact that the radiator fluid has leaked into the transmission, destroying it. they are quoting a repair cost of $7500. i have been without a vehicle for over a week (renting a car became cost prohibitive), and now will spend the morning trying to find a more cost effective way to have the vehicle repaired. i've learned that this is a common issue of which nissan is completely aware. the coolant leak/transmission failure is in fact a design defect in the vehicle. it is completely unacceptable that nissan has not recalled these vehicles, or at the very least made the repair free for consumers regardless of vehicle mileage. i will never purchase another nissan after this experience. *tr

Tl* the contact owns a 2007 nissan pathfinder. the contact stated that while driving 30 mph, the vehicle began to shutter. a local mechanic diagnosed that radiator fluid was leaking into the transmission. the vehicle was repaired. the dealer and manufacturer denied any assistance with the repairs to the vehicle. the failure mileage was 83,400 and the current mileage was 83,600.

While driving on the highway, i felt my transmission seem to shift very roughly into overdrive, and usually occurred between 40 and 50 mph. over the course of about a year, it continued the behavior off and on, until it began to do it daily and i took it to the shop. it was diagnosed as having had antifreeze leak into the transmission due to the oil cooler lines cracking, a common problem with nissan pathfinders, and other nissan vehicles of my model year. there was metal in the transmission pan which signifies that a rebuild is inevitable, all due to the mixing of antifreeze in the transmission. the radiator must also be replaced due to the mixing of transmission fluid, as the mechanics found the "milky" substance, typically associated with the mixing of water and transmission fluid in the radiator. so far, i have been quoted approximately 6,300 dollars for a repair job on this vehicle. *tr

2007 nissan pathfinder. cooler for transmission fluid resides in radiator. radiator cracks, allowing engine coolant into transmission, destroying transmission. *kb

A high pitched whining noise from under the hood on a 2007 nissan pathfinder. took the car to the dealership in modesto california and my wife was told that it would cost 1,300 to replace the timing chain tensioners or more if the timing chain(s) were bad. the car has 71, 000 miles and i was told that it would not be covered under the warranty. my wife was told the car was safe to drive and was told that there was no risk of further damage to vehicle. i have read several other instances where timing chain components fail just beyond the manufacture's stated warranty. the issue has had a tsb since july of 2007 #07042a. i have had all of my service done at this dealer and i had never been advised about the tsb or the noise. the timing chain nor the tensioners should not fail at 70,000 miles. i also have uneven tire wear with no alignment issues. vehicle=lemon. *tr

Wife first noticed a vibration on her way home from school with our daughters. became progressively worse over time. i had tires, bearings, etc checked. no problems found with any of those. looked online and discovered that a lot of pathfinder owners were having transmission problems. checked coolant and found that it had in fact mixed with transmission fluid. i switched the lines from the transmission to trans cooler and radiator to prevent further contamination, and flushed radiator/replaced coolant. also had transmission flushed/fluid changed. the vibration is still present, as i don't have $5000 + for a new transmission/radiator. *tr

My son was on his way to school when i received a call from him informing me that the pathfinder was running hot. i advised him to pull over and wait until i arrive. when i let the hood up, i saw foam-like substances coming from the radiator. i had the vehicle towed to a mechanic shop to have it checked out. he informed me that the radiator had burst and leaked into the transmission. he changed the radiator and informed me that the transmission would stop working soon. since than, i have changed the fluid 3 times @ $60.00 each time and the fluid is still pinkish. now my transmission vibrates between 40 and 50 mph *kb

Received warranty extension on my 2007 pathfinder radiator to 80,000. radiator has faulty transmission cooler inside which leaks into transmission causing transmission failure. why not a recall. called nissan corporate and they said they will only fix the known defect after the failure which of course leaves you stranded somewhere. this makes the vehicle an unreliable mode of transportation, especially on long trips. very dissatisfied with this vehicle due to transmission cooler defects, timing chain tensioner defect, and the fuel gauge inop defect. these are all major defects in which nissan got off easy by warranty extensions and not preventative repairs of known defects. *tr

2007 nissan pathfinder radiator defect causing leak of coolant into transmission fluid and resulting in transmission/radiator complete damage, undetected by dealer service for 30,000 miles. problem detected with opening of investigation. nissan requires co-pay of $2,500 even though complaints occurred previous to 80k miles and when problem detected, was 414 miles over requiring a significant amount of money for a known defect. *tr

Tl* the contact owns 2007 nissan pathfinder. the contact stated while driving, the vehicle was vibrating. he also mentioned that when he applied the accelerator pedal it would not engage immediately. the vehicle was taken to a local mechanic who diagnosed that the controller at the bottom of the radiator malfunctioned causing the transmission and coolant fluids to mix, as a result the radiator and transmission needed to be replaced. the manufacturer was made aware of the failure but did not offer any assistance since the warranty had expired. the vehicle was not repaired. the failure mileage was 86,000 and the current mileage was 86,992.

Like some of the other complaints, i also had transmission problems with my 2007 nissan pathfinder. in october 2009, with 48,000 miles, my transmission started to act up, shifting in and out of overdrive very abruptly, and violently. also, when i was at a cruising rpm of 1500-2500 rpm, in overdrive, the car would vibrate very violently. i took it to the dealership, and they stated that it was the transmission, and fortunate for me, it was covered under warranty. 6,000 miles later, in february 2010, the problem came back. once again, i took it to the dealer. this time they stated that they found antifreeze in the transmission fluid. they stated that they needed to contact a nissan rep for further instructions. 3 days later i received a call stating the problem (antifreeze was leaking into the transmission lines from inside the radiator, and it needed replaced), and they said that nissan would cover the transmission, but not the radiator. when asked the price of the radiator, they quoted me 650 dollars! the radiator ended up costing me 677 dollars after taxes, and they replaced the transmission under warranty, although they stated that they should not, since the problem was due to the radiator. i see that this was not just a fluke problem with my vehicle, but it seems to be common with this vehicle. something needs to be addressed over this matter, for it is a saftey issue, and someone is bound to get injured, if they have not already. i have found hundreds of complaints online over the leaking and mixing inside of the radiator, leading to the transmission problem. today, on august 24, 2010, i learned that the torque converter will now need replaced. a 2007 nissan pathfinder with 64k miles, on its 3rd transmission, new radiator, and now will need a torque converter. this is unacceptable!!! nissan refuses to accept fault for the problem. *tr

Tl* the contact owns a 2007 nissan pathfinder. the contact stated while driving the engine made a whining noise. the vehicle was taken to the dealer who performed a diagnostic test that located the failure within the timing chain. the manufacturer denied assistance with the repair. the vehicle was not repaired. the failure mileage was 32,000 and the current mileage was 64,000.

A high pitched humming/whining noise from under the hood on a 2007 nissan pathfinder. took to dealership and after performing a diagnostic check, they stated that it was the timing chain and it would be $935.00 to repair. i asked that since the car was only two years old with maintenance records shouldn't it be under warranty. they stated that since i had 65,000 miles i missed the deadline by 5,000 miles and it was o.k. to keep driving and not to worry about it. i researched and found that they have had a service bulletin (ntb07-042a) out about this issue since april, 17,2009. i have had my vehicle in a few times since the bulletin came out and feel that they should have notified me especially since i have paid for another bulletin issue regarding the fuel gauge(reference service bulletin ntb07-069b) that cost me $395.00. i feel the dealership is negligent in advising my wife to not worry about the timing chain and to go ahead and deal with it later. it appears that they wanted more mileage to placed on the vehicle so they would have a stronger claim down the road to not pay for the repairs that were mentioned on a bulletin five months prior -which means that issues have existed long before this time frame for a bulletin to be issued. i live in atlanta, ga., a major metropolitan city and i feel that the dealership put my family at risk by advising that the vehicle was safe to drive off the lot because whent he timing chain goes the car looses the capability to function - which is not safe on the busy major interstate system. i have seen a few internet threads that mention similar experiences. regarding the fuel gauge issue (ntb07-069b), this service bulletin came out august 12th, 2009 i had to have this work done on 04/24/2009 and it cost me the $395.00. i have also had the vehicle in and repaired at my cost for service bulletin (ntb07-063)...another bulletin i discovered today. the main point is a timing chain should not go out at 65,000 miles...vehicle = lemon. *tr

Radiator leaking into the transmission causing transmission damage, requiring a new radiator and transmission. nissan knows this is an issue and has not notified customers to fix this prior to the part failing to prevent major damage. they extended the warranty to 85k miles for that part, but it needs to fail for them to cover the repair. i could have replaced the part for around $400 preventing the damage to the transmission, if nissan would have told its customers. now i have had to replace the transmission for $4000 and rent a car for one month at $800. the damage occurred when i was driving. fortunately i was not on a busy highway when the transmission failed. it took so long to fix the transmission because parts are on back order to repair the transmission. *tr

Vehicle would not start. after examining what may be the problem it was found that the engine coolant and transmission fluid had mixed due to a defective oil cooler inside the radiator that caused the valve body in the transmission to fail that controls starting and transmission shifts. vehicle was towed by transmission shop for a compete overhaul including a new valve body. cost of repairs total was 3074.00 dollars. transmission shop installed an external transmission cooler and stated they were having to make these repairs on a number of these nissans for this defect. *tr