Auto Car Moves Forward When On Neutral

[lolmd]

Hello experts,

I have a Mazda familia 1999 Auto transmission. I recently had the EFI cleaned at the garage, (they used a can of Wurth's EFI cleaner) after that I noticed that while at a long stop in traffic, when I put the car in Neutral and take my leg off the breaks, the car begins to move forward slowly. It did not do this before. Could this be the result of the EFI cleaning or some other problem?

I would just like an opinion before I take it back to the garage.

Thanks!

[miniace]

  On 11/5/2011 at 1:08 PM, lolmd said:

Hello experts,

I have a Mazda familia 1999 Auto transmission. I recently had the EFI cleaned at the garage, (they used a can of Wurth's EFI cleaner) after that I noticed that while at a long stop in traffic, when I put the car in Neutral and take my leg off the breaks, the car begins to move forward slowly. It did not do this before. Could this be the result of the EFI cleaning or some other problem?

I would just like an opinion before I take it back to the garage.

Thanks!

Cars move in Position N when on slope. Try the same on an absolute flat place and see.

MINIACE

[lolmd]

  On 11/5/2011 at 1:37 PM, miniace said:

Cars move in Position N when on slope. Try the same on an absolute flat place and see.

MINIACE

yikes! I feel like a complete idiot now but you were right, it didn't move on an absolute flat place. Thanks for saving me from a lot of embarrassment at the garage!

[miniace]

  On 11/5/2011 at 1:51 PM, lolmd said:

yikes! I feel like a complete idiot now but you were right, it didn't move on an absolute flat place. Thanks for saving me from a lot of embarrassment at the garage!

MINIACE

[Schiffer]

im no expert in this but..

IMO you should never put it the N

if you wanna take your foot off put it on P

[Kavvz]

  On 11/5/2011 at 2:37 PM, Schiffer said:

im no expert in this but..

IMO you should never put it the N

if you wanna take your foot off put it on P

I disagree. I flick my car into N all the time at stop lights and in traffic.

I hate having the car in drive (D) and having to hold it in check with the brake, so I just flick it into neutral (N) which is right next to D. Its a lot less annoying than shifting it into park (P) and going through the gears to get back into drive (D).

Edited November 5, 2011 by Kavvz

[Kavvz]

  On 11/5/2011 at 1:08 PM, lolmd said:

Hello experts,

I have a Mazda familia 1999 Auto transmission. I recently had the EFI cleaned at the garage, (they used a can of Wurth's EFI cleaner) after that I noticed that while at a long stop in traffic, when I put the car in Neutral and take my leg off the breaks, the car begins to move forward slowly. It did not do this before. Could this be the result of the EFI cleaning or some other problem?

I would just like an opinion before I take it back to the garage.

Thanks!

  On 11/5/2011 at 1:37 PM, miniace said:

Cars move in Position N when on slope. Try the same on an absolute flat place and see.

MINIACE

lol !!! Nice one 'MINIACE'

[Kavvz]

  On 11/5/2011 at 1:08 PM, lolmd said:

Hello experts,

I have a Mazda familia 1999 Auto transmission. I recently had the EFI cleaned at the garage, (they used a can of Wurth's EFI cleaner)...

Thanks!

Exactly how did they set about this cleaning? Don't tell me they just poured the can into the petrol tank for you and handed you a bill with a markup and labour charge....?!

[lolmd]

  On 11/5/2011 at 3:17 PM, Kavvz said:

I disagree. I flick my car into N all the time at stop lights and in traffic. I hate having the car in drive (D) and having to hold it in check with the brake so I just flick it into neutral (N) which is right next to D. Its a lot less annoying than shifting it into park (P) and going through the gears to get back into D.

yep, that's exactly why I flick it to Neutral as well. N is just one higher than D, so its faster to get moving once the traffic starts to move. Every second counts when your trying to avoid trishaws from butting in front

[lolmd]

sorry, duplicate post.

Edited November 5, 2011 by lolmd

[Schiffer]

  On 11/5/2011 at 3:17 PM, Kavvz said:

I disagree. I flick my car into N all the time at stop lights and in traffic.

I hate having the car in drive (D) and having to hold it in check with the brake, so I just flick it into neutral (N) which is right next to D. Its a lot less annoying than shifting it into park (P) and going through the gears to get back into drive (D).

it is a nuisances i know. but once my mechanic advice me not to put the car on N, i actually used to go downhill on N but he advice no to do that as well (eventhough i went downhill never put to D until the cars stationed).

ok this is not related to this:

once a friend of mine was in a traffic jam and he shifted to N

the van came and knock him from behind. and since he was in N,, the car roll forward.. hence knocking the stationed car at front.

after the incident and sorting stuff at the police station. the van driver payed for my friends damage and my friend had to pay for the damage in the car in front.

[Schiffer]

sorry repost.. blame the new layout

Edited November 5, 2011 by Schiffer

[Kavvz]

  On 11/5/2011 at 3:43 PM, Schiffer said:

it is a nuisances i know. but once my mechanic advice me not to put the car on N, i actually used to go downhill on N but he advice no to do that as well (eventhough i went downhill never put to D until the cars stationed).

The issue there is coasting down hills in neutral (N): When you coast down hills in neutral (N) the transmission spins and heats up but doesn't get enough transmission oil to cool it, thereby over heating and ruining it / shortening its lifespan.

(Also: Shifting from drive (D) to neutral (N) or vice versa, when the transmission is spinning at high rev's causes strain on the transmission as well, which again in turn shortens the lifespan of your transmission.)

Edited November 5, 2011 by Kavvz

[Kavvz]

  On 11/5/2011 at 3:43 PM, Schiffer said:

ok this is not related to this:

once a friend of mine was in a traffic jam and he shifted to N

the van came and knock him from behind. and since he was in N,, the car roll forward.. hence knocking the stationed car at front.

after the incident and sorting stuff at the police station. the van driver payed for my friends damage and my friend had to pay for the damage in the car in front.

Your friend had a shit lawyer. The driver of the VAN was clearly responsible for the accident. The driver of the VAN or his insurance would have been liable to pay for any damages associated with the accident. If I was in a similar incident, I'd have sued for pain and suffering / loss of income in addition to any damages my car incurred.

[Schiffer]

  On 11/5/2011 at 4:01 PM, Kavvz said:

The issue there is coasting down hills in neutral (N): When you coast down hills in neutral (N) the transmission spins and heats up but doesn't get enough transmission oil to cool it, thereby over heating and ruining it / shortening its lifespan.

(Also: Shifting from drive (D) to neutral (N) or vice versa, when the transmission is spinning at high rev's causes strain on the transmission as well, which again in turn shortens the lifespan of your transmission.)

i see.. thnks for clarifying that mate

  On 11/5/2011 at 4:07 PM, Kavvz said:

Your friend had a shit lawyer. The driver of the VAN was clearly responsible for the accident. The driver of the VAN or his insurance would have been liable to pay for any damages associated with the accident. If I was in a similar incident, I'd have sued for pain and suffering / loss of income in addition to any damages my car incurred.

actually he didnt want to drag lawyers and stuff too much

he just wanted to pay the fine and get over with it

if i remember he had to pay just 1500

[Kavvz]

  On 11/5/2011 at 4:23 PM, Schiffer said:

actually he didnt want to drag lawyers and stuff too much

he just wanted to pay the fine and get over with it

if i remember he had to pay just 1500

His fault then. Even if he didn't want to go to court he should have stuck to his guns and gotten the driver of the Van to pay. It sounds like he got suckered into paying at the police station by a semi-literate traffic cop and the driver of the van.

[miniace]

Shifting Auto tranny at traffic lights here in SL is not advisable IMO.If the Idea is is to rest the right foot, may use the handbrake instead.If the concern is the fuel wastage, N is the option but not P but only at major tailback situations.Here in SL generally the lengthiest red is 65 secs and average its 30-35.At darker places if you think your bright tail lights disturb the driver behind you,the handbrake is the solution.

Remember everytime you shift an auto tranny, heavy loads apply on the box and engine mounts plus stressing loads of other parts.Food for thought not for war.

MINIACE

[terrabytetango]

<p>

  On 11/5/2011 at 3:43 PM, Schiffer said:

it is a nuisances i know. but once my mechanic advice me not to put the car on N, i actually used to go downhill on N but he advice no to do that as well (eventhough i went downhill never put to D until the cars stationed).

ok this is not related to this:

once a friend of mine was in a traffic jam and he shifted to N

the van came and knock him from behind. and since he was in N,, the car roll forward.. hence knocking the stationed car at front.

after the incident and sorting stuff at the police station. the van driver payed for my friends damage and my friend had to pay for the damage in the car in front.

Serves your friend right. I too shift into N at traffic lights I'm familiar with, but I always keep a foot on the brake pedal or pull the hand brake if my foot is tired. At long red lights like the LAUGFS u-turn at the north end of the Baseline, I shift into P.Make it a habit to always apply some kind of inhibitor to the wheels when the car you're driving is stationary on the road. I mean we never leave our cars just in Neutral/N when we park them do we?

[Schiffer]

  On 11/5/2011 at 4:39 PM, Kavvz said:

His fault then. Even if he didn't want to go to court he should have stuck to his guns and gotten the driver of the Van to pay. It sounds like he got suckered into paying at the police station by a semi-literate traffic cop and the driver of the van.

well we all know how hard it can be dealing with the police and all.. so better avoid any future conflicts

  On 11/6/2011 at 7:43 AM, terrabytetango said:

.

Serves your friend right. I too shift into N at traffic lights I'm familiar with, but I always keep a foot on the brake pedal or pull the hand brake if my foot is tired. At long red lights like the LAUGFS u-turn at the north end of the Baseline, I shift into P.Make it a habit to always apply some kind of inhibitor to the wheels when the car you're driving is stationary on the road. I mean we never leave our cars just in Neutral/N when we park them do we?

thats what i said in an earlier post.. its not advisable to shift to N

for example, lets assume the road looks flat but a bit slanted in reality..

there is a chance the car will roll backwards and hit the stationed car behind..

IMO its not a good habbit at all.

Edited November 6, 2011 by Schiffer

[Kavvz]

  On 11/6/2011 at 7:43 AM, terrabytetango said:

<p>

Serves your friend right. I too shift into N at traffic lights I'm familiar with, but I always keep a foot on the brake pedal or pull the hand brake if my foot is tired. At long red lights like the LAUGFS u-turn at the north end of the Baseline, I shift into P.Make it a habit to always apply some kind of inhibitor to the wheels when the car you're driving is stationary on the road. I mean we never leave our cars just in Neutral/N when we park them do we?

Yeap, I agree: You've always got to be ready to check a roll-back. Certainly just coming to a stop, shifting into neutral (N) and hoping everything is going to be okay is just plain crazy...

[Kavvz]

  On 11/6/2011 at 2:20 AM, miniace said:

Shifting Auto tranny at traffic lights here in SL is not advisable IMO.If the Idea is is to rest the right foot, may use the handbrake instead.If the concern is the fuel wastage, N is the option but not P but only at major tailback situations.Here in SL generally the lengthiest red is 65 secs and average its 30-35.At darker places if you think your bright tail lights disturb the driver behind you,the handbrake is the solution.

Remember everytime you shift an auto tranny, heavy loads apply on the box and engine mounts plus stressing loads of other parts.Food for thought not for war.

MINIACE

True. You have to weight the pro's and con's of shifting into neutral (N) at stoplights and in heavy traffic. Certainly it does induce wear and tear, however doing so does make long lights and stagnant traffic a bit more bearable. I guess its up to the end-user to decide what practise to adopt...

[Kavvz]

  On 11/6/2011 at 12:15 PM, Schiffer said:

for example, lets assume the road looks flat but a bit slanted in reality..

there is a chance the car will roll backwards and hit the stationed car behind..

IMO its not a good habbit at all.

Well I agree with you on that one: Its advisable to always cover / hover over the foot-brake when in neutral (N) with the hand-brake off; I assumed that it would be second nature for drivers to do so. I guess I should have stated that initially.

[The Stig]

Errrr is it so hard to keep pressing the brakes at a traffic light ? Us folks who drive manual have to press both the clutch and the brakes you know

[Reckless]

  On 11/6/2011 at 2:20 AM, miniace said:

Shifting Auto tranny at traffic lights here in SL is not advisable IMO.If the Idea is is to rest the right foot, may use the handbrake instead.If the concern is the fuel wastage, N is the option but not P but only at major tailback situations.Here in SL generally the lengthiest red is 65 secs and average its 30-35. At darker places if you think your bright tail lights disturb the driver behind you,the handbrake is the solution.

Remember everytime you shift an auto tranny, heavy loads apply on the box and engine mounts plus stressing loads of other parts.Food for thought not for war.

MINIACE

Yeah I completely agree. But for me shifting to N its really beginning to be a habit

Edited November 7, 2011 by Reckless

[leyland]

  On 11/7/2011 at 3:30 AM, The Stig said:

Errrr is it so hard to keep pressing the brakes at a traffic light ? Us folks who drive manual have to press both the clutch and the brakes you know

Exactly what I was also thinking....people here seems to have forgotten about manuals or they have never driven a manual!!! You would always be on Neutral or a fully depressed clutch at a traffic light, so I also can't understand what this fuss is about shifting to neutral at stops and hitting the cars in front or behind because you forgot to press the brake or pull up the handbrake!

IMO, in regular autos it is better to shift to N during traffic stops of more than 1-2 mins, although in newer cars often with CVTs have something called creep control where sensors detect slow moving and regular stops to help with fuel efficiency so that you don't need to manually shift to N