Truck bogs down uphill - Ford Powerstroke Diesel Forum
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  #1  
Old 01-04-2013, 11:23 PM
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Truck bogs down uphill

I'm running kem 175 tune and some hills make my truck really bog down I have to click tow haul for it to shift down. In any other vehicle I have I can give it more throttle and it will down shift but not the 6.4 it just stays at a low rpm and boost goes up. It only does it around 100kph if I'm doing 120kph the power is perfect. I have to either use tow haul or slowdown to 65-70kph to get it to downshift. Can I call kem get them to change my tune. Is it the torque converter that's locking or not locking causing this? I'm sure the tires don't help. Thanks in advance for your help
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Old 01-04-2013, 11:24 PM
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I should just buy h&s but sick of spending money on this thing with all the break downs I've had recently
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Old 01-05-2013, 03:40 AM
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Even with mine I have noticed the same thing. There are a few guys that have talked about it as well who use h&s. Some guys have tweaked some of the stuff with the mcc programming to get the truck to downshift sooner. I am just used to it now.
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Old 01-05-2013, 03:46 AM
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Well atleast its normal I guess. I'm use to it as well but for some reason it was really bothering me today. Thanks for the reply
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Old 01-05-2013, 05:28 AM
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Yea it's something I guess we have to deal with. It really ticks me off. It seems all the shifts are done by speed instead of what your doing. If your on the throttle 50% or more it should carry out the gears a little longer. And another thing is you use to be able to tap the break and it drops it down or Atleast unlocks the converter and everything else we have, why doesn't this work on this truck. I took my shift strategy to s1L to see if it could help fuel mileage and I really like it for flat ground, the hills are tough like you said, you either have to slow down or hit it fast lol
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Old 01-05-2013, 07:51 PM
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Haha ya I bet when people follow me on the highway they are wondering what I'm doing cause one hill I'm flying up it and the next everyone passes me oh well I guess ill just have to get use to it
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Old 01-06-2013, 05:16 AM
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The only thing I worry about is lugging it up hill. I don't do it because I feel like it makes a lot of cylinder pressure and so I don't want to blow the head gaskets so I let off or hit the tow haul to down shift.
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