Ford E450 super duty transmission issue

I agree it may not be a transmission issue but if the ATF has not been changed out now would be a good time to do it.

carringb had not even thought of this. the wife and I are planning a short trip next weekend. I think I will be monitoring the fuel pressure, will let you know who it goes. thanks.

chilly123 wrote:
just replaced the fuel filter as part of routine maint. two weeks ago. I will try the gas line antifreeze. pauldub the only code I could see was an old code fuel rail pressure. this is want prompted me to replace the fuel filter. current rail pressure is 65psi.

Your symptoms do not sound like a transmission problem to me. At least I have never heard of the TorqueShift doing this. It does sound to me like you lost power for some reason. The fuel rail code combined with your symptoms makes me think you are hydro-locking the fuel pump under high load conditions. This happens because the fuel pump is running hot. From what I've researched it seems that long-term parking with ethanol in the tank can cause the impellers to swell slightly. The extra friction makes it run hot, which eventually will cause it to boil in the pump and you get your hydro-lock condition.

Hi,

I thought ethanol would eliminate water in the fuel?

just replaced the fuel filter as part of routine maint. two weeks ago. I will try the gas line antifreeze. pauldub the only code I could see was an old code fuel rail pressure. this is want prompted me to replace the fuel filter. current rail pressure is 65psi.

Something else other than the transmission could be water in your fuel filter. The symptoms that you mention are similar. If you added a couple of bottles of gas line antifreeze to the gas tank, and let it run for a few minutes, this will remove any water in the fuel filter, (water won't go through the fuel filter without being broken down by the antifreeze), and you should be fine. This is a cheap fix for the first thing to try. With a MH this age, and if the fuel filter hasn't been changed, this could be the problem.

Should be the same tranny in both. I'd scan for codes as a code can be stored without setting the check engine light.