Overdrive questions....
Overdrive questions....
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Senior Member
Joined: Jan 2000
Posts: 711
Likes: 0
From: Coal Valley,IL
Yes. It makes no difference on 1/4 mi times.
Later,
Jake...
------------------
2000 Black Lightning
NLOC #476
PSP full meal deal
Level 10 shift kit
SnugLid
BedRug
Wet Okole seat covers
AIM 2" rear drop
13.870 @ 100.52 stock
13.087 @ 104.80 mods
jacobs@revealed.net
[This message has been edited by Baby Jake (edited 10-13-2000).]
Later,
Jake...
------------------
2000 Black Lightning
NLOC #476
PSP full meal deal
Level 10 shift kit
SnugLid
BedRug
Wet Okole seat covers
AIM 2" rear drop
13.870 @ 100.52 stock
13.087 @ 104.80 mods
jacobs@revealed.net
[This message has been edited by Baby Jake (edited 10-13-2000).]
Senior Member
Joined: Mar 2000
Posts: 1,985
Likes: 1
From: Cincinnati, OH
I do.
That is one of my pet peeves, too actually. If you had a manual, would you use fourth (or fifth, depending ) every time you drive? Well, think of it like that, "if this was a stick shift would I use high gear?" Now, if you're towing 4500 pounds across the Rockies, and the computer can't decide whether it wants 3rd or 4th gear, it's still not hurting anything, it's actually still doing what it's designed to do, that is, find the proper RPM/gear ratio mix for the conditions. It's just that sometimes the constant shifting can make you kind of batty and you want the damn thing to "pick a gear and stay with it", that's THE ONLY REASON that they put the damn switch in the thing, but believe it or not it's actually better for the drivetrain and fuel economy to let the thing search for gears back and forth and doesn't hurt the transmssion a bit, so yeah, go ahead and drive it with the O/D turned on. My other favorite is "I drive in town alot and I hate to turn the thing off and on." so don't, it won't shift to fourth gear unless the computer thinks it should, so 99 times out of 100, if it shifts into forth it needs to be there and if doesn't need to be in fourth, it'll stay in third. On old automatic tranmissions they had all 3 gears on the selector, when they went to 4 and five speed automatics they just made a different way to get 3rd manual than adding another slot on the selector. The thinking was "most people will never use it, and doing it mechanically makes the selector more expensive to build and less reliable, so make it an electric switch", but they could just have easily made your selector read "P-R-N-O-D-2-1" for a 4Speed O/D and "P-N-D-4-3-2-1" for a five speed. If your selector read that way, how often would you use 4 or 3? I would turn off my O/D switch about as often as I would drive an old 3 speed automatic (c-6, c-5) in "2" instead of drive, makes about as much sense. Next we'll be getting the "7-8 Off" switch, for when you're in traffic and only want to use the back 3 cylinders on each side of the engine.
Pound for pound the O/D Off switch is the most uneeded and incorrectly used single part on a car anymore.
I have NEVER turned the O/D off, except by accident, and IMHO I prolly know more about transmissions than the average bear.
just my opinion, or rant, but people really show their ignorance sometimes....
[This message has been edited by Factory_Tech (edited 10-13-2000).]
That is one of my pet peeves, too actually. If you had a manual, would you use fourth (or fifth, depending ) every time you drive? Well, think of it like that, "if this was a stick shift would I use high gear?" Now, if you're towing 4500 pounds across the Rockies, and the computer can't decide whether it wants 3rd or 4th gear, it's still not hurting anything, it's actually still doing what it's designed to do, that is, find the proper RPM/gear ratio mix for the conditions. It's just that sometimes the constant shifting can make you kind of batty and you want the damn thing to "pick a gear and stay with it", that's THE ONLY REASON that they put the damn switch in the thing, but believe it or not it's actually better for the drivetrain and fuel economy to let the thing search for gears back and forth and doesn't hurt the transmssion a bit, so yeah, go ahead and drive it with the O/D turned on. My other favorite is "I drive in town alot and I hate to turn the thing off and on." so don't, it won't shift to fourth gear unless the computer thinks it should, so 99 times out of 100, if it shifts into forth it needs to be there and if doesn't need to be in fourth, it'll stay in third. On old automatic tranmissions they had all 3 gears on the selector, when they went to 4 and five speed automatics they just made a different way to get 3rd manual than adding another slot on the selector. The thinking was "most people will never use it, and doing it mechanically makes the selector more expensive to build and less reliable, so make it an electric switch", but they could just have easily made your selector read "P-R-N-O-D-2-1" for a 4Speed O/D and "P-N-D-4-3-2-1" for a five speed. If your selector read that way, how often would you use 4 or 3? I would turn off my O/D switch about as often as I would drive an old 3 speed automatic (c-6, c-5) in "2" instead of drive, makes about as much sense. Next we'll be getting the "7-8 Off" switch, for when you're in traffic and only want to use the back 3 cylinders on each side of the engine.
Pound for pound the O/D Off switch is the most uneeded and incorrectly used single part on a car anymore.
I have NEVER turned the O/D off, except by accident, and IMHO I prolly know more about transmissions than the average bear.
just my opinion, or rant, but people really show their ignorance sometimes....
[This message has been edited by Factory_Tech (edited 10-13-2000).]
Senior Member
Joined: Jan 2000
Posts: 459
Likes: 0
From: Silver Spring, Maryland, USA
Factory-Tech, first of all thanks for the great post. Second, around town driving I always turn off the OD. Reason is that I want the engine braking power to slow the vehicle down without unnessarily using the brakes. Seems to work pretty good.
I used that practice in the last two 4spd OD automatics vehicles and never had any transmision problems or ever need brake work. One of them I still have and that is a 1991 Dakota 5.2L 4X4 with 74,000 miles. No brake work needed yet and no tranny issues. My .02 cents.
I used that practice in the last two 4spd OD automatics vehicles and never had any transmision problems or ever need brake work. One of them I still have and that is a 1991 Dakota 5.2L 4X4 with 74,000 miles. No brake work needed yet and no tranny issues. My .02 cents.
Senior Member
Joined: Jul 2000
Posts: 221
Likes: 0
From: Playa del Rey, Ca, U.S.A.
With my R9 program, it shifts to OD too firmly after releasing the throttle following hard acceleration. So, when I know I'm going to launch hard and then release quickly, I take it off OD.
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Senior Member
Joined: Mar 2000
Posts: 4,297
Likes: 0
From: Clifton, NJ, USA
I've turned OD off on the highway to force a downshift for acceleration...but thats about it...if I had a chip, I'm sure it would downshift, but since I dont I was going to fast for a downshift from the computer.
Daniel
Daniel