6.0L Performance Discussion of 6.0 Liter Ford Powerstroke Turbo Diesels Related To Performance And Longevity

2005 6.0, iTSX not working

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Old 04-07-2015, 10:35 PM
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Default 2005 6.0, iTSX not working

I've had an SCT iTSX with Innovative Diesel tunes for almost a year now, and it's not working. I got it for gas mileage, not power, as I only get 12 at the moment. I get a little more with the canned performance tune, but the Innovative Diesel economy tune is worse (basically the same as stock). The only improvement I could tell is that the canned tune gets me into top gear and locked torque converter sooner than stock. The ID tune holds the gear change out longer (because I have larger tires) so it's back out to almost the same place as stock. So I figure the best way to get any more improvement out of it is to enable the "lock at 1-2-3" option, but it doesn't work. (My assumption on why this is the only thing that affects my mileage is that I drive like a grandma, and don't put my foot down enough for any other power options in the tune to matter, but I could be wrong. On the other hand, at 12mpg highway, I can't afford to put my foot down).

In total that I know of, "Jake Brake" doesn't work (although I'd swear it did at one point), "locked at ct" doesn't work, "lock in 1-2-3" doesn't work, and I'm 90% positive the "Tire revs/mile" doesn't work, but I need to fiddle and log it a bit more to make sure.

I have logs showing the "torque converter desired slip" is stuck high (1020) until last gear (6 according to the log, but I'm not sure about the numbering order) and then it drops to 0. The "slip across conv" drops very low right afterward. The desired slip (and subsequently, actual slip) also drop to 0 if I am decelerating and toggle the tow/haul switch. This seems to tell me that the system is working properly. SCT, on the other hand, say that I have a mechanical issue, perhaps a bad solenoid, that is not only causing the torque converter to not lock, but also causing the desired slip value to not drop at all. They also say that the jake brake and revs per mile failures must also be mechanical failures of some sort. (My 1 year warranty is up next week, I believe.)

So, what possibilities are there other than that the iTsx just doesn't work with a 2005 6.0 F350?
 
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