Automatic Shift Selection

mfreed · Post by **mfreed** » Thu Apr 24, 2003 9:50 am

Does the 4speed Auto have a Perf/Econ. mode switch? I've read that it does on this site, but I did not see it while test driving the Vibe

NovaResource · Post by **NovaResource** » Thu Apr 24, 2003 10:18 am

No. The button on the side is to turn off/on the overdrive gear.

mfreed · Post by **mfreed** » Thu Apr 24, 2003 10:26 am

Ok, I know about that button but a review on this site makes a mention of a "shift pattern" selector.

Post by **NSimkins** » Thu Apr 24, 2003 10:32 am

Can you point out the specific article?

Post by **NSimkins** » Thu Apr 24, 2003 10:40 am

Nevermind, I found it:http://www.genvibe.com/html/03guide/vibeguide3.shtml.. 3rd paragraph.Driving Pattern Selector.. either a technical term for something I am not aware of, or this article was based on very early Vibe data. My guess is the latter.

Stang2Vibe · Post by **Stang2Vibe** » Thu Apr 24, 2003 2:47 pm

I think you're right, Nick. Seems like an erroneous statement to me. At first I thought that it might be a logic program for the transmission were a computer can sense throttle demand patterns and soften or firm up shifts. But what this sounds like is a swich mounted on or near the shifter like the Saturns had where you could choose between normal and performance modes. Maybe the Vibe was supposed to get this and it got nixed just prior to production?

ColonelPanic · Post by **ColonelPanic** » Fri Apr 25, 2003 6:36 am

"The automatic shifter has a high-quality design with an overdrive switch and driving pattern selector."Sounds to me like they're just talking about the shifter itself... I'm thinking "shift pattern" is simply the arrangement of the gears on the shifter. PRND2L. At least that's how I interpret the statement. I think they were trying to be far too techinical that it ended up causing a little distortion about what they were actually referring to.

michiganwhitetail · Post by **michiganwhitetail** » Mon Apr 28, 2003 12:55 am

On the shift lever below the obvious large chrome button there is a small black button labeled O/D. When pressed, there is a display in the instrument cluster "OD OFF". In the OD OFF mode, the transmission controller will allow the engine to rev much higher before shifting and thus allow the engine to make more power and accelerate better. Thus, it works much the same way as other vehicles that have a "performance mode". It's very useful for city driving and trailering.

NovaResource · Post by **NovaResource** » Mon Apr 28, 2003 4:07 am

quote:On the shift lever below the obvious large chrome button there is a small black button labeled O/D. When pressed, there is a display in the instrument cluster "OD OFF". In the OD OFF mode, the transmission controller will allow the engine to rev much higher before shifting and thus allow the engine to make more power and accelerate better. Thus, it works much the same way as other vehicles that have a "performance mode". It's very useful for city driving and trailering.Not so. The auto has 4 gears with the 4th gear being overdriven. Turning overdrive off only means that the trans won't shift into 4th gear. Basically acting like a 3-speed auto. Acceleration performance is not effected because it still useds the same first 3 gears.

satur9 · Post by **satur9** » Mon Apr 28, 2003 5:32 am

i may not know what im talking about here but if you look at some of the pics of matrixes over on the left where the rear window popopen button is the another button that says "ect" im thinking that electronically controled transmision or something like that. my aunt had it on her pathfinder, the manual "said it was to help acceleration". does anyone with a vibe have this button. i have a similar feature in my vibe its called "right hand,left foot".

michiganwhitetail · Post by **michiganwhitetail** » Mon Apr 28, 2003 11:24 pm

Why don't you take one out for a drive yourself and make notes on the rpm shift points for 2nd and 3rd as well as the shift kick downs.After you make the observation then you will understand what a shift pattern is.

KSNeptune · Post by **KSNeptune** » Tue Apr 29, 2003 12:36 pm

My experience so far with the Base Vibe's auto tranny is that the shift points change depending on how hard you are trying to accelerate. For example: When I'm not in any hurry and accelerate with light pedal pressure, the auto will shift quickly into successive gears. When I'm "stepping on it", the auto will stay in each gear longer, allowing the engine to get into it's higher RPM/better torque range. I'm guessing the tranny's progamming is designed to shift gears based on engine load, not specific speed. Thus there is no need to have a switch for economy/sport, since you can get better economy by pressing lightly on the gas pedal to accelerate slowly, and a sportier degree of performance by pressing harder.That's probably why I'm getting no better than 25mpg for my city driving, since I tend to accelerate from each stoplight or stop sign as fast as the little Vibe will take me. KSNeptune

Automatic Shift Selection

Automatic Shift Selection

Re: Automatic Shift Selection (mfreed)

Re: Automatic Shift Selection (NovaResource)

Re: Automatic Shift Selection (mfreed)

Re: Automatic Shift Selection (NSimkins)

Re: Automatic Shift Selection (NSimkins)

Re: Automatic Shift Selection (NSimkins)

Re: Automatic Shift Selection (mfreed)

Re: Automatic Shift Selection (michiganwhitetail)

Re: Automatic Shift Selection (NovaResource)

Re: Automatic Shift Selection (NovaResource)

Re: Automatic Shift Selection (michiganwhitetail)