Conversation Between smj999smj and thatguy427
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don't always get good results. Flushing is something you can do yourself and will run you a couple hundred bucks in ATF (I would use Valvoline Maxlife Full-synthetic ATF for $18/gallon from Walmart), but if it works, it could save thousands of dollars. The other option is a used trans if you can find one that hasn't been contaminated, but keep in mind the TCM has to be initialized (or programmed) to the ECM (the same goes for getting a reman trans or a rebuild with a new TCM). So, as you see, there are several options. Only you can determine which route is the best one to go with.
Obviously, shifting solenoids, of which there are seven, can be damaged, as well. These can lead to damaging other parts of the transmission, as well, due to the improper shifting. Nissan dealers almost never rebuild transmissions, anymore, because the cost of a new torque converter and valve body alone, not including labor and other parts needed, make it impractical and inconvenient to the customer compared to replacement with a remanufactured transmission with a warranty. Costs are lower for most transmission shops, so it may make sense to have one rebuild the trans, assuming they know what they are doing (I've known a lot of transmission shops that were not very good in my years as a mechanic and good/reputable ones can be hard to find). So, it's kind of a crap shoot! If the vehicle is worth it, the best route is to get a genuine Nissan reman transmission. Other companies have remans and transmission shops can rebuild them, but unless you how reputable they are, you
Responses are limited to 1000 characters, so I am going to have to break your answer into several messages.
If the problems are due to the contamination, then the first issue would be get all of the coolant out of it. Some people have had success with multiple flushes, but a lot of times sludge gets between the TCM and the valve body it attaches to and creates shifting issues. This can be cleaned out if one has the patience to do so; I do remember seeing a YouTube vid of it being done. I believe this is where a lot of the problems occur, or at least begin.
A family members Pathfinder has been having problems recently and from my research you have commented quite a bit on the subject and seem to be very knowledgeable on the subject. I'm hoping you can help me out. I have not looked at the car yet to confirm the problem but from the descriptions given to me it seems like the transmission has been damaged on this 2006 Pathfinder due to the radiator's internal tranny fluid cooler failing. Do you know what all gets damaged? Will a transmission rebuilt kit fix the problem or are their additional parts that need replaced? torque converter?
Any help would be greatly appreciated.