WHAT WOULD YOU RECOMEND FOR A TRANSMISSION THAT SHIFTS ERRATICALY WHEN PULLING A TRAILER?

  • Tiny
  • Murray Clark
  • 2009 Ford F-150
  • 30,000 miles

2009 Ford F150 with 5.4 Litre V8 - When I pull my 7500 lb travel trailer the transmission will downshift on a flat road at highway speed for no apparent reason. It only started happeneing the third season of use. The dealership gets no error codes on the diagnostic but during a test drive agree there is a problem. The transimission has been re-calibrated 3 times.

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Wednesday, February 22nd, 2012 AT 9:22 PM

1 Reply

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,556 posts

You have an internal issue possibly with the valve body. You need a trans shop to check it for you and verify the failure.

Roy

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Wednesday, February 22nd, 2012 AT 9:58 PM

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