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Transmission issue

 
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Rett73



Joined: 23 Jul 2010
Posts: 21
Location: Newport, NC

PostPosted: Tue Dec 13, 2016 9:57 am    Post subject: Transmission issue Reply with quote

I have a 2008 Pathfinder S, have a fault code of P0734. Transmission seems to stay in one gear now. I drained the fluid and changed the filter but no luck. I assume 4th gear is gone.
I'm looking at replacing with a used trans or rebuild it myself. Any help please
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2008 Pathfinder
2008 Pacifica
1999 Ford F-150
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smj999smj
Moderator


Joined: 22 Jan 2012
Posts: 4757
Location: Prospect, VA

PostPosted: Tue Dec 13, 2016 3:42 pm    Post subject: Reply with quote

Causes of this DTC may include:
Low or dirty transmission fluid
Mechanical failure inside transmission
Internal blockage inside transmission main control
Faulty Shift solenoid
Faulty transmission control module

Considering the fair number of solenoid we see fail on these transmissions, have you ruled out a bad shift solenoid?...or, a dirty valve body or faulty TCM? It would be a lot less expensive than a replacement trans or overhaul, as well as a much easier repair, if it were one of those as opposed to R&R the entire transmission.
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2006 Pathfinder LE VQ40DE AWD, Nitto Dura Grappler P265/65R17, aftermarket radiator, Airlift 1000's, Bilstein HD rear shocks
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Rett73



Joined: 23 Jul 2010
Posts: 21
Location: Newport, NC

PostPosted: Wed Dec 14, 2016 1:25 pm    Post subject: Reply with quote

I changed the fluid, filter and ruled out the solenoid......
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