Are there any effects on an automatic tranny if gears are switched while the car is in motion. for example, if you reverseing and while the car is still rolling in reverse you pop into drive?

 

I wonder about this too, not reversing especially fast but more along the lines of .5-1mph. You know when you back out of a space and don't stop fully.

 

The torque converter can absorb some, but obviously at a certain point you are going to fuck something up. I personally always come to a full and complete stop before changing gears.

It also really depends on the transmission. Someone was telling me they had a friend who's truck got stuck so he decided to put it into 4WD and rev the engine, than drop it into gear, blew the POS 4L60E. On the other hand a couple of idiots in 3G rev up their auto TLs and drop it into gear and all it does is spin the tires(until one day when they blow the trans).

Mike

 

I just heard that it's "harder" on the transmission if you do that, so I just go to a complete stop before shifting.

Oh mjb, spinning the tires on a Saturn TAAT increases your chances of having them infamous "rod" fly out of your case...

 

i always do complete stop before puting into drive

 

Has anyone had a headlight assembly hold mositure? I have a 2003 TL type S. Seems like this is bad news and costly to fix. Could it be the seal that is shot or perhaps something more causing the issue?

 

^^

 

ALWAYS ALWAYS ALWAYS come to a complete stop!

My mom blew through 2 transmissions on our old Jeep Grand Cherokee. She would back down my sloped driveway, hit the bottom, and throw it into gear. She learned her lesson the hard way.

 

Sounds like you need to start a new thread on that.

As far as the tranny goes, yes it's bad to put it in D when you're still backing up. You really should come to a complete stop before switching gear like that.

Honda's seem to deal better with that than most trannys, due to the fact that they have no planets, but it's not a smart move. You could cause internal damage.

 

^^

The tranny doctor has spoken.

I usually throw it into neutral while backing up, so when I do come to a stop, I don't have to wait for a full reverse to drive engagement.

 

I remember once I did that when I had my permit I was backing out of our driveway with my dads car and I I pulled out into the street still rolling I put it in D and hit the gas, and DAMN that car made a really bad sound. It also jumped up too. Lucky we sold it awhile ago and the tranny never failed so its the next owners problem (I doubt that one time though really did anything that bad.)

 

YES! i'll put in N before i come to a complete stop...and it looks like your driving a Standard to people watching behind you...lol

 

Your mother must be blond if that is how she defines the hard way

Third times the charm but by then she'll really get it

Mike

 

There was a time back in the early 90's when Honda had some real problems with just this item. It was even reported as such on MotorWeek. I would play it safe and wait till you've come to a complete stop before engaging a forward gear. Then wait until you feel the transmission take hold before you apply throttle.

 

Brings back memories of my old '90 Accord. After backing up, coming to a complete stop, and going through R -> N -> D, I'd still have to poke the throttle gently to make sure the transmission got the message before setting off. If I didn't, the car would make a loud THUNK before lurching away.

 

what about putting the car in N to coast and then putting it back in D when you need to accelerate again? Is that bad on the tranny?

 

Now what about switching from D to D3 or D4? Like when you're going up a hill?

 

thats fine. i do that when i slow to a stop D4 -> D3

 

Yeah - no problem there. Just don't change directions on the tranny while moving in the opposite one.

 

No - on our tranny it's not bad, but it is bad on the gear selector switch.

I had to replace my gear selector switch (located on the tranny) last year prematurely because I'd switch to neutral at traffic lights. The Acura gear selector switch (as well as other mfg's) does not do well with such abuse. Leave it in D unless it's significant driving delay.

 

LOL in English please.

PS, thanks for the replies guys.

 

Except everyone knows a 2002 TL did not come in manual

Anyway, you're probably heating up the tranny fluid a little bit, or so I've heard.

I hate people that do that in autos, and even in manuals to a certain extent.

 

Why would you do that?

 

If you're going forward (in Drive), don't throw the car into Reverse without coming to a complete stop.

If you're going in Reverse, don't throw it into Drive without coming to a complete stop.

 

 

because when u r coming down a huge mountain.. u can leave the car in neutral to coast down... save on a bit of gas rather than let it keep the revs up... then when u get to the bottom of the hill, put it back in D...

 

I'd never coast in any kind of traffic in Neutral (actually driving, not coming to stop at a light). It's just not safe if you have to make a quick/emergency maneuver. Another option would be to just lower your gear. Anyway, unless you actually live in the mountains, how often and for how long do you actually ever coast down long hills that it would really make a difference? Plus, I just find it funny to even bother when driving Auto. Just me though.

 

Hehehe - yeah - what SHE said!

 

I don't do that now because I figured it wouldn't be good for the tranny, but I wasn't sure. I'm just used to driving a stick and putting it in neutral when I'm coming to a stop.

Also sometimes I coast down my parking garage so I can let the engine warm up while I'm driving. Usually I can make it all the way down, but sometimes if someone cuts in front of me I'll have to slow down to much to keep going and I'll have to come to a complete stop and put it in D to get going again. It would be cool if I didn't have to fully stop... I know I'm retarded.