Forum Discussion
MitchF150
Jul 25, 2021Explorer III
If you just put it in D and T/H mode and just go to town on it, you just put too much boost into it for several minutes longer than it liked... That'll raise the coolant temps to trigger the overheat (limp mode) condition.
It's supposed to do that when it overheats so you don't end up with a nuclear meltdown.... Your truck did exactly what it was supposed to do when you were just pumping the boost to it.
These Eco's have great power. Just not great cooling when under boost for extended amounts of time (several minutes)
> 10 psi raises the temps the ECU reads so while you can usually get away with it for a couple of minutes, if you are just pumping that boost for longer than that, it's gonna trigger that limp mode.
That occurs around 250*. Then the ECU puts it in limp mode and tries to save itself.
I also tow a #7000 TT, but I monitor some additional vitals that the 'dashboard' does not and I also drive the truck by manually locking out the OD gears and not trying to be the first one to the top of the hill... :)
I'll bet that once you let off the pedal a bit, the temp dropped pretty quick.. That means the T-stat is working and you just reduced the boost so it was not a nuclear reactor.. That's what the turbos do when they are making all that great power..
Just not enough cooling to handle it.. Sucks for sure. I deal with it every time I tow, but now know how to monitor and use it and can still pull the grades at an easy 50-55 mph while keeping the temps no more than 225*
I know I'll raise heck for it, but it's just the fact and I would still not trade my Eco for a V8...
Good luck! Mitch
It's supposed to do that when it overheats so you don't end up with a nuclear meltdown.... Your truck did exactly what it was supposed to do when you were just pumping the boost to it.
These Eco's have great power. Just not great cooling when under boost for extended amounts of time (several minutes)
> 10 psi raises the temps the ECU reads so while you can usually get away with it for a couple of minutes, if you are just pumping that boost for longer than that, it's gonna trigger that limp mode.
That occurs around 250*. Then the ECU puts it in limp mode and tries to save itself.
I also tow a #7000 TT, but I monitor some additional vitals that the 'dashboard' does not and I also drive the truck by manually locking out the OD gears and not trying to be the first one to the top of the hill... :)
I'll bet that once you let off the pedal a bit, the temp dropped pretty quick.. That means the T-stat is working and you just reduced the boost so it was not a nuclear reactor.. That's what the turbos do when they are making all that great power..
Just not enough cooling to handle it.. Sucks for sure. I deal with it every time I tow, but now know how to monitor and use it and can still pull the grades at an easy 50-55 mph while keeping the temps no more than 225*
I know I'll raise heck for it, but it's just the fact and I would still not trade my Eco for a V8...
Good luck! Mitch
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