Auto Trans. ! !!! ??? ? ? ? ? ! ! !!! ? - Pirate4x4.Com : 4x4 and Off-Road Forum

bayrunner · 05-24-2004, 10:14 PM

Hey Guys ______ Would it hurt an Auto Trans to be shifted up or down mainly down( manually) while going down a 6% grade or should one use ONLY brakes?????? ______ THANKS BAYRUNNER

JeepCrawler98 · 05-24-2004, 10:59 PM

__________________________________________________ ____________________

No it'll be fine, dont hurt it one bit.

RedBullJeep · 05-24-2004, 11:17 PM

Shift down manually...just don't over-rev it by shifting down at too high of a speed. My three speed Auto on my 460 ford powered motorhome is safe to downshift at about 48 MPH...
Dunno what you've got but run it up in 2nd gear to the highest speed you'd be comfortable running it in, then you'll know what speed you'll be safe to manually downshift at.

DopeyDog · 05-25-2004, 11:23 AM

Some automatics are smart enough to know not to downshift yet. Like if you were to go from 55 in D and throw it into L the tranny won't just downshift into L until it get's slow enough to. However it will downshift at the highest speed feasible causing unexpected sudden wheel slowage (seatbelts are fun).

Dog
Not that I know anything, this is just what i've experienced mucking around with things.

braxton357 · 05-25-2004, 11:32 AM

Quote:

Originally Posted by DopeyDog

Some automatics are smart enough to know not to downshift yet. Like if you were to go from 55 in D and throw it into L the tranny won't just downshift into L until it get's slow enough to. However it will downshift at the highest speed feasible causing unexpected sudden wheel slowage (seatbelts are fun).

Dog
Not that I know anything, this is just what i've experienced mucking around with things.

Some, but not all. And since this guy didn't tell us what he has, we can't help him. Not that it matters though, if you are smart enough to throw your tranny into first at 55 then you deserve whatever happens...

JohnR · 05-25-2004, 06:04 PM

Doh, I thought that was how you were suppose to go down a hill

using low gear... brakes will stop your wheels but your momentum keeps your rig skidding down the hill out o control

I admit this is sometimes fun but controled decent does have its upsides

05-24-2004, 10:14 PM	#1 (permalink)
bayrunner Registered User Join Date: Feb 2004 Member # 27313 Location: Eugene ,Oregon__U.S.A. Posts: 70	Auto Trans. ! !!! ??? ? ? ? ? ! ! !!! ? Hey Guys ______ Would it hurt an Auto Trans to be shifted up or down mainly down( manually) while going down a 6% grade or should one use ONLY brakes?????? ______ THANKS BAYRUNNER Last edited by bayrunner; 05-24-2004 at 10:17 PM.

05-24-2004, 11:17 PM	#3 (permalink)
RedBullJeep Pirate is KING! Join Date: Jun 2002 Member # 12217 Location: San Diego Area Posts: 13,502	Shift down manually...just don't over-rev it by shifting down at too high of a speed. My three speed Auto on my 460 ford powered motorhome is safe to downshift at about 48 MPH... Dunno what you've got but run it up in 2nd gear to the highest speed you'd be comfortable running it in, then you'll know what speed you'll be safe to manually downshift at. __________________ . Dustin Webster Red Bull RockCrawling Team RockHer 1 - SOLD STILL FOR SALE - Toter and trailer, RockHer 2, and KOH TJ. Click for details

05-25-2004, 11:23 AM	#4 (permalink)
DopeyDog Registered User Join Date: Oct 2003 Member # 23645 Location: Sandy Eggo, CA Posts: 92	Some automatics are smart enough to know not to downshift yet. Like if you were to go from 55 in D and throw it into L the tranny won't just downshift into L until it get's slow enough to. However it will downshift at the highest speed feasible causing unexpected sudden wheel slowage (seatbelts are fun). Dog Not that I know anything, this is just what i've experienced mucking around with things. __________________ 1984 Nissan 720 Baja Chase Truck 1987 SR5 Limited 22RTE DD 85 22RE & 89 3VZE Parts Donors

05-25-2004, 06:04 PM	#6 (permalink)
JohnR Registered User Join Date: Jan 2004 Member # 26784 Location: El Toro CA Posts: 96	Doh, I thought that was how you were suppose to go down a hill using low gear... brakes will stop your wheels but your momentum keeps your rig skidding down the hill out o control I admit this is sometimes fun but controled decent does have its upsides __________________ JohnR 82 Scrambler If it aint broke Fix it till it is

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05-24-2004, 10:59 PM	#2 (permalink)
JeepCrawler98 Registered User Join Date: Mar 2003 Member # 18342 Location: AZ Posts: 217	__________________________________________________ ____________________ No it'll be fine, dont hurt it one bit.