Quick A4 question..
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Instructor
Joined: Oct 2001
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From: Cary, NC
Quick A4 question..
Say the max speed in 2nd is 80mph (just an example number). Say you're doing 100mph in 'D'.
If you go to downshift to '3', and accidentally go through '3' and land in '2', will the computer be smart enough to keep you in 3rd until your speed drops to 80mph or less, or will it just throw you in 2nd and over-rev the engine?
Thanks.
If you go to downshift to '3', and accidentally go through '3' and land in '2', will the computer be smart enough to keep you in 3rd until your speed drops to 80mph or less, or will it just throw you in 2nd and over-rev the engine?
Thanks.
Drifting
Joined: Dec 2002
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From: Reynoldsburg oh
Re: Quick A4 question.. (FarmerBob2001)
I am telling you this from experience. I have accidently did something like this, if you are a greater speed then the gear allows you to it will stay in D until you get to a speed where it can shift down w/o redlining. So you would be alright if you hit the shifter on accident of something. :)
Advanced
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Re: Quick A4 question.. (FarmerBob2001)
I'm pretty sure I did this once and it did over rev. When your in 2d your in 2d. I'm sure it's the same as leaving it in 2d and not up shifting...it over-revs. FYI 2d will take you up to ~104.
Thread Starter
Instructor
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From: Cary, NC
Re: Quick A4 question.. (Carvettejal)
Well, now I'm getting conflicting info.. :confused:
I know if you start in 2nd (from a stop) you will get 2nd and 2nd only. But the same question applies to 1st and 3rd. If you're doing 200mph in 4th (say you own a Lingenfelter..) and move the lever into '3', what happens? I hope the computer is programmed to keep it in 4th to avoid engine damage.
I know if you start in 2nd (from a stop) you will get 2nd and 2nd only. But the same question applies to 1st and 3rd. If you're doing 200mph in 4th (say you own a Lingenfelter..) and move the lever into '3', what happens? I hope the computer is programmed to keep it in 4th to avoid engine damage.
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Re: Quick A4 question.. (FarmerBob2001)
Quick A4 question....
Burning Brakes
Joined: Aug 2002
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From: Los Angeles CA
Re: Quick A4 question..
I hear the conflicting stuff.....maybe it's different between the years of the C5? Like Pre-2001 and 2001+ ?? I dunno....just a thought. I'm curious as well as I have no clue. :D
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From: san jose ca
Re: Quick A4 question.. (Untouchable00)
I tested that last week-end at Laguna Seca, where you reach 120 in 3rd at the end of the stands and i put it back in 2nd and it does NOT downshift until it is safe to do so (I have a 98 A4 2.73), while i'm braking.
Same thing for 1st gear, it will only shift back when safe.
Same thing for 1st gear, it will only shift back when safe.
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From: St. Peters MO
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Re: Quick A4 question.. (pasender)
>>>I tested that last week-end at Laguna Seca, where you reach 120 in 3rd at the end of the stands and i put it back in 2nd and it does NOT downshift until it is safe to do so<<<
Yep, what he said. Computer controlled automatics have had this safety feature for quite some time. Think about what would happen if this weren't the case. You are way above the rev limiter range for a particular gear. You drop it down and it downshifts to that gear.
The rear wheels would, most likely, lock up in a massive skid and at the same time attempt to over rev the engine. The rev limiter can't help this situation because the differential is manually rotating the engine.
So in this case it is computer to the rescue. It knows the safe speed to allow the kickdown to occur.
Just don't try that scenario in a manual!!!
[Modified by 2k2C5, 8:45 PM 2/12/2003]
Yep, what he said. Computer controlled automatics have had this safety feature for quite some time. Think about what would happen if this weren't the case. You are way above the rev limiter range for a particular gear. You drop it down and it downshifts to that gear.
The rear wheels would, most likely, lock up in a massive skid and at the same time attempt to over rev the engine. The rev limiter can't help this situation because the differential is manually rotating the engine.
So in this case it is computer to the rescue. It knows the safe speed to allow the kickdown to occur.
Just don't try that scenario in a manual!!!
[Modified by 2k2C5, 8:45 PM 2/12/2003]
Burning Brakes
Joined: Jan 2002
Posts: 1,147
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From: Geismar LA
Re: Quick A4 question.. (jfpilla)
Farmer, why don't you test it by going maybe 1 mph over your shift point and put it in 2nd and see what happens. Can't hurt anything doing it that way. :cheers:
Burning Brakes
Joined: Jun 2002
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From: Frisco Texas
Re: Quick A4 question.. (FarmerBob2001)
Just get you shift points up/down corrected using ls1edit and you dont need to manually shift. Setup the down shift to the exact same as the up shift and just floor it and your money!
Thread Starter
Instructor
Joined: Oct 2001
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From: Cary, NC
Re: Quick A4 question.. (2k2C5)
That's what I was hoping to hear. Thanks..
>>>I tested that last week-end at Laguna Seca, where you reach 120 in 3rd at the end of the stands and i put it back in 2nd and it does NOT downshift until it is safe to do so<<<
Yep, what he said. Computer controlled automatics have had this safety feature for quite some time. Think about what would happen if this weren't the case. You are way above the rev limiter range for a particular gear. You drop it down and it downshifts to that gear.
The rear wheels would, most likely, lock up in a massive skid and at the same time attempt to over rev the engine. The rev limiter can't help this situation because the differential is manually rotating the engine.
So in this case it is computer to the rescue. It knows the safe speed to allow the kickdown to occur.
Just don't try that scenario in a manual!!!
[Modified by 2k2C5, 8:45 PM 2/12/2003]
Yep, what he said. Computer controlled automatics have had this safety feature for quite some time. Think about what would happen if this weren't the case. You are way above the rev limiter range for a particular gear. You drop it down and it downshifts to that gear.
The rear wheels would, most likely, lock up in a massive skid and at the same time attempt to over rev the engine. The rev limiter can't help this situation because the differential is manually rotating the engine.
So in this case it is computer to the rescue. It knows the safe speed to allow the kickdown to occur.
Just don't try that scenario in a manual!!!
[Modified by 2k2C5, 8:45 PM 2/12/2003]
Team Owner
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Re: Quick A4 question.. (FarmerBob2001)
If you are going forward at about 30 mph and put the selector into Reverse, the computer will NOT prevent the trans from shifting into reverse, or at least trying to. :eek:
Don't ask how I know.....
Don't ask how I know.....
MONARTOR
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Re: Quick A4 question.. (Gearhead Jim)
If you are going forward at about 30 mph and put the selector into Reverse, the computer will NOT prevent the trans from shifting into reverse, or at least trying to. :eek:
Don't ask how I know.....
Don't ask how I know.....
Drifting
Joined: Oct 2002
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From: Fairview Hts. IL
Re: Quick A4 question.. (cscollis)
Just get you shift points up/down corrected using ls1edit and you dont need to manually shift. Setup the down shift to the exact same as the up shift and just floor it and your money!
