Tunes and high idle... - Ford Powerstroke Diesel Forum
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Old 12-20-2011, 03:28 PM
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Tunes and high idle...

I am going to soon be ordering a chip (likely PHP) and wanted to know if any or all tuners lock up the convertor when on high idle setting. There are times I will be idling for days at a time, and would prefer not heating up the trans fluid as well.
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Old 12-20-2011, 04:58 PM
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I'm not positive, because I don't have a chip yet either, but I think if you have one of those 6 position chips you would have to have it on the high idle setting in order for it to run on high idle. I want to get a high idle setting for those cold mornings so it will warm up a little faster. Then switch it over to whatever I want to drive it in, 60, 80,100 hp or whatever...
Someone with a chip will pitch in before long...
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Old 12-20-2011, 05:53 PM
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That is what I am asking. When on the high idle setting, does it lock the convertor.
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Old 12-20-2011, 10:56 PM
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try phps website it has a forum you may be able to ask it on there and the person that works with bill will usually answer it quickly
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Old 12-21-2011, 02:28 AM
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That was going to be my "last resort" if I couldn't get an answer here. Don't like registering on sites for a single question if avoidable.
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Old 12-21-2011, 09:43 AM
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Are you asking if you can drive in high-idle? That is definitely not a good idea, it's intentions are for warm-up in park or neutral.
-Phil
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Old 12-21-2011, 10:10 AM
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I'm no mechanic but doesn't the tc only "lock up" when you go into overdrive?
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Old 12-21-2011, 10:43 AM
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Maybe I am confused, because I can't make sense of this.

I think you are asking if a tuner will lock the converter while the truck is stationary in park, in high idle. The answer would be no, it can't.

The converter is there to allow your engine to run while the truck is stopped. Kind of like a clutch on a manual transmission car. Locking the converter on a non-moving vehicle will act like releasing the clutch on a non-moving vehicle with the transmission in gear.

In a truck without a PTO, the power goes into the transmission, and that power is either sent out the back to the drive wheels, or is absorbed into the transmission fluid (as heat) through the converter (Or some combination of both).

If you tried to lock the converter with the wheels stationary, the converter would attempt to send all power out the back of the transmission where it would find locked wheels (or a parking prawl) and the engine would stall.

If I misunderstood what you were asking, disregard. If you need more detail or explanation, I'd be glad to help.
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Old 12-21-2011, 02:10 PM
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By Torque Converter Lock I was referring to the PTO TC Lock. I don't even know if my transmission has a PTO option, though.

I believe FORD calls is SEIC mode. This mode does lock the torque converter on the newer Superduties.
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Old 12-26-2011, 11:51 AM
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If you lock the TC in park it won't kill the motor. I've done it. It sounds bad at regular idle, as in the TC rattling. But in high idle it's fine. That's how PTOs work. in park the diff is d/c from the motor via the trans. I know what you're saying and idk if they do. I'd just call them and ask and see if they even think it's a good idea.
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