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Good afternoon, my son has a 2010 Mercury Mariner it is shifting hard out of first over 3000 RPM or if I let off the gas. The check engine light came on and I had it scanned, the code that came up was P0756 Shift Solenoid B Performance or stuck off. I flushed the system (roughly 4 quarts) and refilled on 6/27/21 and will do it again this weekend. I am somewhat handy and if I can located the solenoid pack I might be able to replace it myself, but first I need to find it. I have been reading that it might be inside the pan towards the front of the vehicle where I drained it from originally. I also read that it was not located there because there are 2 different generations. It is 2 wheel drive.

Thank you in advance.
 

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Well, I saw 3 different pctures for a filter, which means that they have more than one possible transmission. If you drop the pan, it sits lower than everything else and it just pops on, it's not screwed (at least none that I've messed with). Your transmission has a drain plug?
 
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