muddocktor
Member
Today I've been tied up helping fix the transmission on my wife's 04 Titan. We've had it since it was new and it hasn't given any major problem until shortly before I came back from work in Midland, TX last week. The tranny went into "limp home mode" and was only running 3rd gear, which made it real hard to take off from a stop. Anyways, I got with my youngest brother last weekend who worked as a mechanic for Nissan for 25 years. My daughter had gone by Auto Zone and got a readout from the computer that said it had a "P1757 A/T FR/B Solenoid Valve Circuit Malfunction" that triggered limp home mode. So he said that one or more of the solenoids in the valve body was screwed up and we needed to order the valve body. Anyways, he got with the local Nissan dealer he used to work for and ordered a new valve body yesterday.
This morning I went to his house and we dropped the tranny pan and removed the old valve body while waiting for the new one to come in. Or rather, he dropped the valve body while I acted as a general gofer. About the time the valve body was out, the dealer called and said the order was delivered, so we went over to get the new valve body, 6 quarts of the special Nissan ATF needed and a pan gasket for the tranny for an out the door price of $1074 and change.
Dayum, these parts be expensive I think to myself, but a rebuilt tranny would have been much more. And while there, my brother checks and finds that we need to program the darn tranny into the ECU on the darn truck too!
So we would need to either bring the truck over and hook the computer up to the truck to program the ECU or if it wouldn't drive without programming he would have to borrow the computer to program the truck at his house. So we go an back to his house and he installed the new valve body in the tranny, put the oil back in and fired her up and the tranny went back into limp home mode, which would let us drive it to the dealership. So we waited around at his house unti 5:00 PM and drove over to the dealership to program the darn tranny. Once there, he got with his good buddy (that he trained, BTW) and hooked up the Nissan diagnostic and programming computer to the ECU and programmed the valve body into the ECU, tranny now fixed.
So I learned quite a few things about the newer trucks:
Transmissions on newer cars and trucks are pretty expensive to work on.
It seems like every darn thing on newer vehicles is tied into the computer on the car nowadays.
It sure is great to have a relative who knows how to work on this new stuff. And has connections at the dealership to let him use their computer.
After all this, the old truck drives and shifts like it used to. My wife is happy, since she cannot drive my car, which has a standard tranny. And I am happy in that I don't have to act like a chauffeur and drive her around.
This morning I went to his house and we dropped the tranny pan and removed the old valve body while waiting for the new one to come in. Or rather, he dropped the valve body while I acted as a general gofer. About the time the valve body was out, the dealer called and said the order was delivered, so we went over to get the new valve body, 6 quarts of the special Nissan ATF needed and a pan gasket for the tranny for an out the door price of $1074 and change.


So I learned quite a few things about the newer trucks:
Transmissions on newer cars and trucks are pretty expensive to work on.
It seems like every darn thing on newer vehicles is tied into the computer on the car nowadays.
It sure is great to have a relative who knows how to work on this new stuff. And has connections at the dealership to let him use their computer.
After all this, the old truck drives and shifts like it used to. My wife is happy, since she cannot drive my car, which has a standard tranny. And I am happy in that I don't have to act like a chauffeur and drive her around.