2006 Nissan Pathfinder: harsh or hard shifting

Filed Jun 25, 2019 · Engine, Transmission · 165,000 miles · IN

All 4 of my catalytic converters have had to be replaced (or need to be replaced - I've already replaced bank 1. Now bank 2 is bad) in the past 12 months or so and now my radiator is leaking into my transmission. I discovered there was a class-action lawsuit on the radiator/transmission issue, but I'm outside of the warranty period. With respect to the catalytic converters, I occasionally smell exhaust, but the check engine lights stay on. With the transmission, it started out as gear slipping, causing rough driving (which the dealership told me was the catalytic converter). Then, it started running slow out of first gear and hard shifting. I took it to a transmission place that pulled transmission codes and when they dropped the pan, the fluid looked like a milkshake. The rough driving/gears slipping didn't matter - it could be on the highway or in the city. I don't know the exact date in 2018 that I had the issue, but I've been dealing with this issue for a year.

Filed Jul 31, 2013 · Engine, Transmission · 105 miles · NY

I was driving my truck on the expressway. The past few days there has been a vibration, a clunking noise and very slow acceleration. Until recently, there have been no signs of engine problems. Today on the expressway the truck started vibrating badly and lost acceleration. I was able to coast over to the side of the road but I almost caused a serious accident. I had an appointment schedule with nissan on friday due to the recent symptoms; however, after this morning I took the truck to the dealership. I spoke with someone at the shop who indicated tan extended warranty was issued for radiator and transmission problems. I never received a letter from nissan and I certainly would have brought the truck in for repair. I almost caused a very serious accident.

Filed Feb 16, 2013 · Engine, Transmission · 166,000 miles · TX

Driving car starts hard shifting up and down.I don't think I would have made it home if I wasn't so close. After a little online research I check radiator and see that transmission fluid is intermixing with radiator fluid. The worse part is nissan new this was a problem and hasn't done a recall. I bought this car from a nissan dealers preowned with 86,000 in 2009. To me they new it was a problem and still sold me a car in which I have little recourse, but to fix myself.

Filed Oct 26, 2012 · Engine, Transmission · 83,000 miles · CT

Vehicle started shuddering and lost propulsion on the highway. After this incident it began slamming into gears and would not go in reverse. Looked online and saw that many people are having the same issue. I brought the car to the dealer to be told that the radiator failed causing coolant and transmission fluid to mix, causing incorrect internal transmission pressure, and internal failure. Nissan refuses to take accountable action and repair the failures. This is obviously a defect and in no way should the consumer be responsible. Thankfully nobody was behind me on the highway when this happened as I had my three kids in the car.

Filed Sep 2, 2012 · Engine, Transmission · 93,000 miles · CA

This began intermittently showing problems on the highway, during acceleration (after letting off the gas pedal to slow) the car would start to shake slightly and lose power before again running smoothly in may 2011. Later it started to do it at slower speeds during acceleration. Then it would sometimes have one or two clunks during acceleration, before again running smoothly. We took our car again to our mechanic in may 2012, and found that the radiator had been leaking, then gushed into the transmission. We replaced the radiator, and flushed the transmission to help fix the issues. The issues still continue today, although we rarely drive the car and can not afford to purchase an new transmission.

Filed Apr 17, 2012 · Engine, Transmission · 80,798 miles · HI

Verified at local dealership that radiator coolant is mixing with transmission fluid which causes rough shifting and car to shake at certain speeds. This is a serious safety issue as car can suddenly lose power/break down while driving. Radiator and transmission need to be replaced. We received nissan's extended warranty (8 yr/80,000 miles) on radiator last year. Car is only 800 miles out of warranty, however nissan will not cover the cost of replacing the radiator and transmission. Nissan needs stand by its product and issue a recall for this problem.

Filed Jan 20, 2012 · Transmission · 97,395 miles · VA

Rough shifting prompted a check of the transmission fluid at the dealer. Was told the radiator cracked and leaked coolant into the transmission and both components needed to be replaced immediately. They offered refurbished parts for the out of warranty repair for $5480. An independent repair shop offered new parts for $5200. N