Had my Edge for a little while now and I really love this thing. Shifts are good and firm, performance is more on par with what I want, and the extra data I can see is nice (trans temp and AMPG)...


However...one small issue keeps me from being 100% satisfied...


Sometimes I will get a hard hot restart condition...just won't catch on the first try like with a completely cold engine. Has the most recent flash from Edge on the box and I don't mess with anything except the shift points and its a level 2 tune with no ignition tweaks. Anyone else have this issue? Is it only on the 4.6?

Also...about what is the average temp for transmissions? Its a 4R70 for what that is worth running into a 3.55 and 285/75-17 tires...I have been getting around 190 max during the day with ambient running around 90 so far (gotta love Texas springs...) and goes down to about 160 max at night with 70 ambient. What is everyone else getting with theirs? Should I get a larger trans-cooler?

Thanks
D

 

I have the 5.4L with tow package and haven't seen my temps ever get past the 170's in Central Florida since I've had the Edge (3 months total).

 

i have been noticing around the 160's in my 06 screw 5.4. our air temps have been in the 50's here in alaska, so that keeps it lower too. i havent towed in a while, and of course that will raise the temp also. doesnt the tranny fluid get cooled int he radiator? what are the temps doing there? if they are more stabil, i would think you could be getting lower than adequate oil flow in your tranny.... possibly a sign of a dirty filter. just a couple quick thoughs.

 

I also live in Texas and my trany temps are about par, the same setup as you do. Have you pulled anything with it yet?

 

For your hot start condition, you may want to look at the fuel system of the truck. Seems like I remember seeing something about sticking injectors on these trucks. Had a hot start problem with my old Bronco - turned out the fuel pressure regulator died and put max fuel pressure to the rail (about 90psi) - The injectors just couldn't hold that pressure and flooded the engine on hot starts. If you can watch the fuel pressure to make sure it is in spec and doesn't fall off too fast after shut down, that would be a good start.

As for the tranny temp, that sounds about normal. I wouldn't run it too cool, it will cause higher viscosity and may allow moisture to build up in the fluid. When you start getting north of 200F, the fluid will start to oxidize. I have seen quotes that at 175F, the tranny fluid should be good to 100,000 miles. For every 20F rise, cut that in half ie- 50,000mi @195F - 25,000mi @215F...etc.

I personally would consider 220-230F a caution zone and start looking for extra cooling and/or shorter change out intervals for the fluid. At around 250F you can start to cook rubber seals and get clutch slippage where things can go down hill in a hurry. 300+ and you are boiling fluid and slipping clutches which is really bad. It can even lead to fire as the fluid boils out the tranny vent (From personal experience, again with the old Bronco)

 

I would think that a fuel pressure issue would kick a code?

And I haven't towed anything with it yet...other than me and my dog.


Thanks for the responses!


D

 

It might, although I don't know that there is any code specifically for high or low fuel pressure, but it can show in other ways - when mine got really bad it showed as O2 sensor 'not switching' codes...in my case, it was continually running rich. I don't know that a leaky injector would throw a specific code either, but you would see the fuel pressure bleed off right after shutdown.

 

As far as trans temps, 170 is about as high as i've seen...that is pulling a low boy and going up a 7% grade for about 5 miles at 90 mph.
I too have the hot start problem on occasion. but mine done that before the edge. it only happens once in a while. it is like i let go of the ignition too quick or something. no codes though, and aside from cold weather effecting the edge console, i really like it

 

My truck has always had the same hot start problem with no Edge. If I let go of the ignition before it starts, it always labors to start the next try.

 

My 07' Screw does the same thing (on hot start), no mods and less than a month old.

 

Well, with the folks saying its doing it without the Edge I ain't gonna sweat it.

D

 

I tow a 7000+lb TT, and this last weekend my trans temp with the edge on lvl 2. got to 190 on hills, and would go back down to 170 on level ground. empty my trans temp stays at 150 or so.