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Old 12-21-2012, 08:23 AM   Thread Starter #1
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Default PO744 After Doing Valve Body Swap From Level 10

I just did the valve body swap for a level 10 valve body. I made sure all of the solenoids are hooked up properly But now the transmission will shift rough almost slamming into gear then shifts all over the place locking in 5 and that code comes up. What did I do wrong?
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Old 12-21-2012, 11:38 AM   #2
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Default Re: PO744 After Doing Valve Body Swap From Level 10

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Old 12-21-2012, 12:23 PM   #3
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Default Re: PO744 After Doing Valve Body Swap From Level 10

I had that code randomly 3 weeks ago in the silver max. Ended up having to replace transmission.
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Old 12-21-2012, 01:18 PM   #4
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Default Re: PO744 After Doing Valve Body Swap From Level 10

Originally Posted by Smokin5s View Post
I just did the valve body swap for a level 10 valve body. I made sure all of the solenoids are hooked up properly But now the transmission will shift rough almost slamming into gear then shifts all over the place locking in 5 and that code comes up. What did I do wrong?
P0744 -Torque converter S/V Function(Lock up)
Basically the torque Converter does not lock up when commanded by TCM.
You need to arm yourself with FSM and follow diagnostic procedures outlined for this code.
Possible causes
-Pressure control solenoid
-Torque Converter clutch
-Hydraulic control circuit.
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Old 12-21-2012, 01:36 PM   Thread Starter #5
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Default Re: PO744 after doing Valve Body swap from Level 10

The guy at level 10 said that one of the solenoid pins probably bent during install so I guess the pan's coming off again
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Old 12-22-2012, 01:48 AM   #6
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Default Re: PO744 after doing Valve Body swap from Level 10

Oh man good luck keep us posted .
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Old 12-22-2012, 02:04 AM   Thread Starter #7
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Default Re: PO744 after doing Valve Body swap from Level 10

Will do, I'm hoping to tear into it tomorrow and figure out what's going on.
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Old 12-23-2012, 02:27 AM   Thread Starter #8
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Default Re: PO744 after doing Valve Body swap from Level 10

I pulled the valve body cover and all the pins are connected properly. we even put a multimeter on it to make sure that they are making good connection. Still waiting to hear back from Level 10 on the latest findings. for being something that is gauranteed to fix the transmission issues, so far, I am unimpressed and unhappy with how much it has cost me.
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Old 01-08-2013, 02:19 PM   Thread Starter #9
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Default Re: PO744 after doing Valve Body swap from Level 10

Level 10 shipped me an entire valve body, I swapped it out, now my car shifts and doesn't pull engine codes... BUT, at around 45 mph, starts making a clicking noise... it's very apparent at that speed, but disappears once you slow down a little... (seems to be right at the 42mph mark) Level 10 is trying to blame CV Joints even though they are new and it wouldn't have such a distinct start and stop if it was cv joints. Any idea what could cause this? I can take a video if that would help.
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Old 01-08-2013, 06:18 PM   #10
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Default Re: PO744 after doing Valve Body swap from Level 10

No offense but thats why you buy OEM .
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Old 01-08-2013, 06:42 PM   Thread Starter #11
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Default Re: PO744 After Doing Valve Body Swap From Level 10

Dude, my original Valve Body is OEM... if OEM didn't have issues in the first place then I wouldn't have transmission issues to begin with :-)
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Old 01-08-2013, 07:20 PM   #12
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Default Re: PO744 After Doing Valve Body Swap From Level 10

They did redesign then to prevent the issues with Maintenance.

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Old 01-15-2013, 01:57 PM   #13
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Default Re: PO744 after doing Valve Body swap from Level 10

Originally Posted by smittybizzle View Post
No offense but thats why you buy OEM .
fully built tranny from level 10 here that has been taking a serious beating for a while (150 + shot of nitrous) lol

everything fine here no codes no jerks no slips

i honestly didn't even think it would make it this far lol
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Old 01-16-2013, 02:08 PM   #14
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Default Re: PO744 after doing Valve Body swap from Level 10

Originally Posted by taz394 View Post
fully built tranny from level 10 here that has been taking a serious beating for a while (150 + shot of nitrous) lol

everything fine here no codes no jerks no slips

i honestly didn't even think it would make it this far lol
Thats good Taz394 , to the OP I was just saying the valvebody from Nissan is a newer version .
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Old 01-17-2013, 01:51 PM   Thread Starter #15
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Default Re: PO744 After Doing Valve Body Swap From Level 10

400 miles on the new valve body, the PO744 code is gone, but it still doesn't shift smooth all the time, and now I have this annoying ticking noise.... I took a video of it, but I'm at work and don't have access to photobucket to host the video.
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Old 01-18-2013, 04:57 AM   Thread Starter #16
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Default Re: PO744 After Doing Valve Body Swap From Level 10

this is a video of the ticking noise.... you can clearly hear it start and stop and it is speed dependant, it doesn't have anything to do with engine RPM's, etc..

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