Code P1757

[Jval]

Oh shit, I forgot about the circuits or "buses(?)" braking like that. That'll save you time & $.
Glycol contamination is not common in the FX. It is in Nissan trucks & mini vans. It does happen though, per GTO. It doesn't appear as though you have that issue. You found your problem.
The valvoline atf you've got is clear? The Val. synthetic that's good for our trans and transfer case is red. Not to say what you have isn't as well, idk, but I know the Val. Max Life full synth. is good to go. Got that in my power steering system also.
You could pick up a Transgo reprogramming kit for a couple hundies while the v.b. is out. You're 90% the way there, just a few springs, check balls and holes to be drilled. Just watch the main pressure check ball & spring, better yet, just leave that right were it is cause it doesn't need to come out anyway.

I'm using the Val Max Life full synth. The first time I went from Matic to Val, the car shifted smoother. Might have been because it was new fluid thou.

I'm reading more about brownish cloudy atf and it might mean other issues with tranny. I will find out soon.

I'm thinking I will add new ATF and drained again after a couple of days to check for contamination.

 

[g0ldm4g3]

By in large, people have been worried about using whatever fluid in whatever make and model for whatever purpose forever. There are fluids one shouldn't use, for example, certain coolants in our VQ35DE's because they'll corrode the interior of the engine.
The Val. Max Life is fine and might be part of the reason why my transmission is a bat shit crazy tire chirping machine. IDK but no problems for me.'
I'm glad you found this forum because this broken bus issue might be your problem as well.

I was thinking exactly that, as well. Doubt I’ll have enough down time to repair it, if that’s the case. But once I buy my Q60, I can’t wait.

In the meantime, I’ll just clean the ground points and add grounds.. more specifically one to the transmission.

 

[onthemove]

I'm using the Val Max Life full synth. The first time I went from Matic to Val, the car shifted smoother. Might have been because it was new fluid thou.

I'm reading more about brownish cloudy atf and it might mean other issues with tranny. I will find out soon.

I'm thinking I will add new ATF and drained again after a couple of days to check for contamination.

I thought I read your trans fluid was clear?

 

[onthemove]

I was thinking exactly that, as well. Doubt I’ll have enough down time to repair it, if that’s the case. But once I buy my Q60, I can’t wait.

In the meantime, I’ll just clean the ground points and add grounds.. more specifically one to the transmission.

Yeah, if you're getting out of the FX, there's no point in dropping any $ on it.

 

[Luis_fx35]

Hi,
Bringing back this valve body issue. I had the same problem about a month ago and I took it to a computer repair shop and it lasted a month, now I’m back with the same problem. I called “street smart transmission” and they couldn’t send me a pre-flashed valve body to my vin but they offered to rebuild mine. I don’t want to wait a couple o weeks with the car jacked up intill they send my valve body back. Which other companies will send a pre-flashed valve body to my vin# so I don’t have to wait weeks to get it back.
And if the OP fixed the valve body what kind of soldering technique did he use? anyone else with the same issue? How did you fix it? Thanks in advance.