sinbad2000

The one with the plain D, or the D in a circle? thanks and dont laugh.

blkfirebird91

iTrader: (-1)

hey man for city i would cruise in D and on highway i would Cruise in OD which is the D with the circle around it

sinbad2000

Thanks!

blkfirebird91

iTrader: (-1)

your welcome

RobSS1113

wow sinbad, im not gonna laugh here but is this your first car? Yeah I do the same thing.. I drive in "D" Drive in the city and when I get on the Highway I throw it in Circle D ! a.k.a. Overdrive.

sinbad2000

No, i just wanted to know if its best to drive them like you explained... The city highway thing, a friend of mine told me to use overdrive on the highway, just wanted to make sure.

five7kid

iTrader: (14)

OD all the time, regardless.

Uh, except at the drag strip . . .

STRIKER911

iTrader: (1)

I asked a guy at the tranny shop this and he said early cars had hydraulic overdrives while the newer ones had electronic (may be the other way around). The older ones should be in d in the city and the newer ones are fine where ever. Call a shop to get the precise info. I drive my 89 in d in the city.

RS Reaper

OD most of the time, when I'm just getting around (Saves gas).
D when I'm having a little fun with speed.

Stephen

iTrader: (12)

Really...I'm trying not to laugh. But I think my laughter is more aimed at whoever taught you to drive, be it your parents or the High School instructor.

But I drive mine in OD 99.999% of the time, regardless of city or highway. Besides, the tranny controls itself by starting from 1st gear regardless. By putting it in Drive, your only causing the drivetrain to run in higher RPMs, when it could be spinning slower & lasting longer, as a result.

High RPMs cause more friction, which causes higher temps. Higher temps shorten auto trannies lives.

Darkshot

iTrader: (4)

I use D in the city and (D) on the highway. Yes, there is a difference.

Personally, when in (D), my transmission doesn't act right in the lower gears. It slips. Doesn't do it in D. Once I'm up to speed I can shift into (D) without problems.

STRIKER911

iTrader: (1)

my trans does the same thing. shifts to soon. Its only got 4k on it too so its not your trans. Why have two drives for no reason otherwise? If you where hard on the gas then it wont shift till it has to anyways when its in od right?

tony_cogliandro

iTrader: (3)

he was right to ask about that year. that was the last year that the 700r4 trans had a problem with shifting back and forth and burning itself out. it was a common problem and they finally fixed it in the 90 model.
had a family member that worked for gm and the dealers were constantly getting burned out 700's because they would shift themselves between 3rd and 4th so much they just quit working.
sometimes it would burn out everything and sometimes they would lock in 4th - never get into 4th or just stop working.
so it was a good question.

STRIKER911

iTrader: (1)

c i kinda knew lol. As soon as I get off the hwy mine goes into d. Friend of mine had the same trans go out two times, & I told him years ago how to shift it. He still didn't learn. He has another car mero with trans trouble. May not be the same thing. He had a shift kit put in by a place called royal trans. said when he drives it for the first 30 minutes it revs way up before it shifts, then after that it shifts like it has no kit in it at all.

He let it sit it self out of warranty so he wants me to put a new filter in it. Said it helped the first time for a while. i told him it sounds like the converter is going. Whats your take on that?

Synful

The real reason your trannies are shifting too soon is this:

they are automatic trannies.

STRIKER911

iTrader: (1)

What lol, well u have an extra t-56 laying around you can help a bother out with? I hate my trans. Oh well one day I will have the 6 speed.

Synful

go get a T5 in the meantime and just be careful not to drop the clutch @3500RPMS too often

STRIKER911

iTrader: (1)

I would have done that, but the guy I bought my car from had just rebuilt the motor and trans. Still only have 4k on them. Guys at the shop should have kick him in the as s for rebuilding a 305, & 700r fart.