I have a 2000 Expedition 4x4 5.4 with 132,000 miles. I installed and edge several years ago and it has been working fine. Programed for high performance with a transmission firmness change, 1st to 2nd setting 7, 2nd to 3rd setting 5 and the same for 3rd to 4th. On my Elk hunt i was pulling a 7x14 cargo trailer. The trans was dumping while under a load. I just had trans serviced before I left. I left the trailer at a friends house and drove home without it. Trans bumping while under a load. I have been using these setting for over two years. When home I put stock program back in. No trans problem. I then reprogramed to level three but did not change the trans firmness setting. No problem. Is this an early warning my trans needs a rebuild??

 

Not sure what the problem is, but you should not be towing on a performance tune. That is what level 2 is for. Is it possible that it was going in and out of overdrive? What is referred to as searching.

 

+1 DO NOT tow in level 3. Says not to right in your edge owners manual.

 

Thanks for your responses. When I first recieved the edge I called Edge and told them I was programed in setting two but was using 91 octane and dumped the timming accordingly and changed the transmission setting. I asked how far off was I to the #3 setting and he said not far off. He said they where more concerned about people starting to fast from a stop and damaging the transmission. It was pointed out in the old days when you cammed and carbed an engine you are basicly doing the same thing. I do understand the O\D searching but this is not what was happening and when I dropped the trailer it was still doing it. The trans even when it was bumping was shifting firm and quick. I even considered it could be the all wheel drive transfer case (I do not have a 2wd setting).

 

I'm having just a bit of trouble understanding how you used the Edge. At one point, it sounded like you said you used level 2 with 91 octane (which is fine), but then you say you "dumped" the timing? Were you actually using level 3?

If so, there are changes in Level three that go beyond simple things like timing and fueling. There are adjustments to line pressure, torque reduction and clutch release/engagement times. These adjustments can put stress on the transmission if you tow with the vehicle.

- Jack

 

Jack, I think that dumped was a typo and should have been bumped.

 

I did reprogramed with level 2 and have not had the problem return. I did program a level 2 with 91 octane and advanced the timing per the manual. I think my programer needed to be restored to stock then reprogramed as I was having a hard time starting the vehicle at times. This too has gone away. I have had some electrical problems(shorts) and I think this my have messed up the programing. I have not tried to pull the trailer yet but tonight I am going to drive a 6% upgrade on the interstate to try it out.