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Guest Message by DevFuse

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Register your Fusion Hybrid at the official Ford authorized registry here.

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Transmission oil pump

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1 reply to this topic

#1 OFFLINE   Rafat


    New Member

  • Fusion Hybrid Member
  • 11 posts
  • Region:Middle East
  • Location:Jordan
  • Current Vehicle:Ford Fusion 2014 Hybrid
  • My Hybrid's Year:2014

Posted 17 March 2018 - 03:57 PM

Anyone has an idea what's the logic behind making the transmission oil pump be connected to the planet carrier and work only when the ICE is on?

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#2 OFFLINE   billford


    Fusion Hybrid Enthusiast

  • Fusion Hybrid Member
  • 278 posts
  • Region:U.S. Pacific Coast
  • Location:Seattle
  • Current Vehicle:None
  • My Hybrid's Year:2014

Posted 18 March 2018 - 02:10 PM

I guess they think that transmission splash lube is adequate when on battery power. 


The energi has a separate transmission pump that works all the time because of its extended range on battery power.


There are some posts here a few years ago about coasting down long mountain grades on battery power, transmission will not get pressure lubed and maybe a good idea getting the engine running periodically.


I also believe the trans fluid interval is too long. I change mine every 2 years. It only takes about 4 quarts, not a big expense. 

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