This is kind of an odd question, but humor me.

I was told by a dealer a few years ago that the newer trucks, around 1999 at the time, have a system by which the truck runs on reduced power if the cooling system fails. Now, I don't know the mechanism by which that works, or even exactly when it does it, but I have to assume its either cutting fuel to all cylinders, or at least some once a certain temp is recorded.

If it is cutting fuel, could the parameters by which it does that be altered using a tweecer? I have no personal experience with a tweecer, but I know on the eec4 mustangs, that there are tons of parameters or scalars or whatever that can be changed. See where I'm going with this?

Would there be a way to get the trucks to run in the fail safe mode by manipulating how the computer controls that capability so that at low throttle input, like cruise, and at full temp or something, that you might be able to get your truck to run on fewer cylinders and thereby save gas? I know, like I said, odd question. I just wondered if it might be possible.

Anyone have any thoughts??

 

Hi Gary;

This is an old topic. Cylinder deactivation management was discussed long ago (if you Search - you'll find some real good posts).

Basically, the failsafe system in the Fords was not meant for prolonged running - only to get you to a repair facility if possible, and to prevent damage to the engine.

There is far more required mechanically and programmatically to support cylinder deactivation as a normal operating regime. None of those requirements are present on our engines.

So even if Tweecer could 'force' failsafe opration, it would run like crap and have very little power.

Hope this helps.

Cheers
Bubba