less torque in lower gear?
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less torque in lower gear?
I have an odd question concerning a 2004 4x4 5.4l.
If i shift this truck into 1st gear and then take off, it feels like the engine is bogged down. Shifting into "drive" makes the rpms go UP and the truck will qucikley speed up.
I've never had an auto truck do this. Anyone know why? Seems backwards.
If i shift this truck into 1st gear and then take off, it feels like the engine is bogged down. Shifting into "drive" makes the rpms go UP and the truck will qucikley speed up.
I've never had an auto truck do this. Anyone know why? Seems backwards.
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I am deffinately getting into to a lower gear. I tried it again on the way home. If I start out in "1" it feels sluggish - not like a low gear should feel. Then, if I shift into "2" when I am going say 15mph or so, the truck will lurch and gain more power. I am not too worried about it, I just wondered if all these new trucks where like this. Everyone before this I had with an auto would act like you would think, ie, more nut in 1 or 2 versus d.
Last edited by rodneys123; Nov 24, 2006 at 08:18 AM. Reason: spelling
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Less torque in lower gear
Rodney, Ive ask this same question several times without a satisfactory answer from anyone. I understand the computer is controlling this but I havn't found anyone to tell me how to get arround it. It is a real pain for me pulling a heavy boat up some of the steep mountians here in Hawaii (Big Island) If I leave the tranny in Drive it constantly shifts up and down, If I keep it in second the power level is about half. Question for Anyone????? How do you get arround this feature??? Will a Superchip, Edge, or any of the others override it? Some of you Techie Motorheads should know. Much Mahalo, Larry in Kau.
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Larry,
I feel your pain. In the old days, when you shifted into a lower gear you had more power. I do not tow much like you, but what I wanted to confirm is that this is "normal" for the newer Ford, which based on your response, it is.
I feel your pain. In the old days, when you shifted into a lower gear you had more power. I do not tow much like you, but what I wanted to confirm is that this is "normal" for the newer Ford, which based on your response, it is.
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From: Clifton Park NY
Most of todays vehicles have torque management written into the tune of the engines. It helps on keeping the shifts soft and un-noticeable and probably longevity of the drivetrain. You can get around it mostly with a tuner.
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From: Kansas City
With the drive by wire system the computer can choose how much throttle response there is when you hit the gas pedal. Simply the3re is no cable to the throttle body. A sensor judges throttle (pedal) position and in turn a servo moves the throttle body. In Drive a specific map is used to determine throttle/pedal position. In 1 or 2 on the shifter it allows much more pedal movement in relation to throttle body movement. This is for instances like towing a boat out of water on a boat ramp. It basically gives you more leeway in adjusting the throttle without jerking the truck/trailer. Hope this helps. By the way it is designed this way and thats the way it is supposed to feel. It also helps on slick surfaces. On ice try driving in 2 and you will notice the whells won't spin near as easy.
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From: Clifton Park NY
THat does make alot of sense. Remapping the throttle so you can more accurately apply power. Nothing like spinning the wheels off on a moss covered boat ramp. Most new off road vehicles(Land Rover) do this when in 4 low. Easier to ease it over large rocks.
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good info
as mentioned, this throttle control can be nice in certain situations...i like it when maneuvering over big rocks or in tight places when i don't need to shift my transfer case into lo--gives a similar feel, it's come in handy when doing chores at the ranch and helps keep the tires from making a mess of the trails
as mentioned, this throttle control can be nice in certain situations...i like it when maneuvering over big rocks or in tight places when i don't need to shift my transfer case into lo--gives a similar feel, it's come in handy when doing chores at the ranch and helps keep the tires from making a mess of the trails
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From: SE Georgia
I actually got to experience this effect today. I was engine braking down a hill in the ice today in 1st gear and when I went to take off I essentially "floored" it to play a little in ice and the truck could barely do a decent burnout.
nice feature though. I just need to remember to put her in drive next time before I hit the gas.
nice feature though. I just need to remember to put her in drive next time before I hit the gas.