Going up a hill....
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From: Clarksville,TN
Going up a hill....
I have a pretty big hill to go up to get to my house. I'm usually going around 50mph. If I baby my truck up the hill it down shifts from O/D to 3rd gear like it should. If I don't get in the gas any, when my speed reaches 40-43mph and 2K rpm's , the truck feels like it loses power for like a second or two, then picks back up again. If I get in the gas a little, there is no problem going up the hill and I stay a constant speed the whole time.
Has anybody ever heard of this?
Has anybody ever heard of this?
Suspended
Joined: Sep 2006
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From: Algonquin Il
I have not heard of that problem but i had a stutter in the 3-2 downshift and the dealer flashed the pcm for me, seemed to fix the prob.
Clarksville huh? My grandfather lives down there kind of by Rossview rd and 24 You ever been to the Tropicana Shade?
Clarksville huh? My grandfather lives down there kind of by Rossview rd and 24 You ever been to the Tropicana Shade?
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Originally Posted by dly97
I have a pretty big hill to go up to get to my house. I'm usually going around 50mph. If I baby my truck up the hill it down shifts from O/D to 3rd gear like it should. If I don't get in the gas any, when my speed reaches 40-43mph and 2K rpm's , the truck feels like it loses power for like a second or two, then picks back up again. If I get in the gas a little, there is no problem going up the hill and I stay a constant speed the whole time.
Has anybody ever heard of this?
Has anybody ever heard of this?
Yup. Normal behaviour for the factory shift schedule.
What you are feeling in the second instance is the torque converter unlock delay.
Either disable OD, go faster, or get some custom tuning - which will help because you will have more part-throttle torque to play with, and better shifting & lockup managment overall.
Heavy truck + relatively low torque (4.6) + incline + factory shift sched = general wierdness on certain hills at certain speeds.
Cheers
Bubba
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From: Omaha, NE
Originally Posted by MGDfan
Heavy truck + relatively low torque (4.6) + incline + factory shift sched = general wierdness on certain hills at certain speeds.
Cheers
Bubba
Cheers
Bubba
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From: Clarksville,TN
Originally Posted by Ftruck05
I have not heard of that problem but i had a stutter in the 3-2 downshift and the dealer flashed the pcm for me, seemed to fix the prob.
Clarksville huh? My grandfather lives down there kind of by Rossview rd and 24 You ever been to the Tropicana Shade?
Clarksville huh? My grandfather lives down there kind of by Rossview rd and 24 You ever been to the Tropicana Shade?
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Joined: Jul 2006
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From: Clarksville,TN
Originally Posted by MGDfan
Hi.
Yup. Normal behaviour for the factory shift schedule.
What you are feeling in the second instance is the torque converter unlock delay.
Either disable OD, go faster, or get some custom tuning - which will help because you will have more part-throttle torque to play with, and better shifting & lockup managment overall.
Heavy truck + relatively low torque (4.6) + incline + factory shift sched = general wierdness on certain hills at certain speeds.
Cheers
Bubba
Yup. Normal behaviour for the factory shift schedule.
What you are feeling in the second instance is the torque converter unlock delay.
Either disable OD, go faster, or get some custom tuning - which will help because you will have more part-throttle torque to play with, and better shifting & lockup managment overall.
Heavy truck + relatively low torque (4.6) + incline + factory shift sched = general wierdness on certain hills at certain speeds.
Cheers
Bubba
Thanks. Glad to know it is normal and not something wrong with the tranny.
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Joined: Feb 2004
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Originally Posted by luke280
Forgot to carry the two! Is that beer math?
I never just carry two - is usually a two-fer .
Ahhh yes, the new math ...next time I'll use scientific notation !
Cheers
Bubba
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From: Clifton Forge, Va.
MGDfan,
I am really glad to know just what caused that weird shift feeling on hills. I had that until I got my Xcal2 and Troyer tunes. I had forgotton about it until this post. Thanks for the info
Kenny
I am really glad to know just what caused that weird shift feeling on hills. I had that until I got my Xcal2 and Troyer tunes. I had forgotton about it until this post. Thanks for the info
Kenny
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Joined: Feb 2004
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Originally Posted by CruisinKen
MGDfan,
I am really glad to know just what caused that weird shift feeling on hills. I had that until I got my Xcal2 and Troyer tunes. I had forgotton about it until this post. Thanks for the info
Kenny
I am really glad to know just what caused that weird shift feeling on hills. I had that until I got my Xcal2 and Troyer tunes. I had forgotton about it until this post. Thanks for the info
Kenny
Same results here, buddy
!Cheers
Bubba