2012 mazda sport 3 sky unwanted acceleration

[Gata]

I have 2012 mazda sport 3 sky, 2.0l, 6 speed manual gear box and after gear shift to 4th gear, car accelerate on its own for about 2-3 sec. I'm not even touching gas pedal. Gas pedal is not stuck. It does same thing when shift from 4th to 3rd gear. For me this is safety issue. Mazda dealership is not able to fix this problem.
I also owned 2005 mazda 3, 5 speed gear box and no problem there.
Something is wrong with sky active engine!?

[Booter22]

do you have rubber / winter floor mats?

[Gata]

do you have rubber / winter floor mats?

no, i don't have any floor mats on driver side, just because I want to eliminate stuck gas pedal. Also if gas pedal is stuck prm would go up when clutch pedal is pressed down. Car accelerate after clutch is released and acceleration will last for 2-3 sec and then will stop.

[5_Alive]

You need to find another dealership to visit & have this issue addressed immediately I'd say..

[greyseason]

Ive had this happen to me more then a few tims over the past 8 months. I always assumed it was me until it happened a few more times. Ill go into mazda and talk to them but i cant recreate it at a moments notice, its sparatic

to descrive it, imagine coming down the off ramp, 6-5, 5-4, 4-3. and when you hit 3rd, the rpms jump to 4k-4.5k and does a pull then stops. Like when your in 1st gear, and ride the clutch a little too long then pop the clutch. it jerks you forward. same thing

[greyseason]

EDIT

[r4mi5awi]

Given that the 2012's are the first with skyactiv, maybe there's an issue with the throttle mapping. My guess is the 2013's probably don't have this issue if Mazda worked out all the kinks. Can an ECU 2013 MY reflash on a 2012 MY work? Is that possible if requested?

[Booter22]

now does the cars RPM jump to like say 6,000 RPM? or does it just blip and increase say 2-400 between those shifts?

[greyseason]

its a jump with increase in speed

[Booter22]

its a jump with increase in speed

again how much of a jump. how much does the rpm go up. are we talking 300 rpm or 2,000 rpm. big difference between them.
its the car physically moving forward increase in speed with rpm increase with out gas pedal application 5km/h, 10.15??
does it lurch forward?
does this happen every time when shifing into those specific gears or is it intermittent?
are you (the op) able to load a video of it happening or if you were to need to show someone would you be able to duplicate it every time?

i understand it gives the feeling the throttle is sticking, but its an electronic throttle which is why i asked about the mat, thought it might have been causing the pedal to stick.
just trying to get as much info to offer any direction.

[greyseason]

again how much of a jump. how much does the rpm go up. are we talking 300 rpm or 2,000 rpm. big difference between them.
its the car physically moving forward increase in speed with rpm increase with out gas pedal application 5km/h, 10.15??
does it lurch forward?
does this happen every time when shifing into those specific gears or is it intermittent?
are you (the op) able to load a video of it happening or if you were to need to show someone would you be able to duplicate it every time?

i understand it gives the feeling the throttle is sticking, but its an electronic throttle which is why i asked about the mat, thought it might have been causing the pedal to stick.
just trying to get as much info to offer any direction.

id say the rpm jumps around 2-3k and might increase 5kph?
i usually experience it going from 4-3, and 3-2 but again, doesnt happen all the time.

since its the weekend maybe i can sit my iphone near the gauges and take a vid and capturw it but i doubt it

[Booter22]

id say the rpm jumps around 2-3k and might increase 5kph?
i usually experience it going from 4-3, and 3-2 but again, doesnt happen all the time.

since its the weekend maybe i can sit my iphone near the gauges and take a vid and capturw it but i doubt it

Well a down shift rpm increase makes sense as when going down from any gear the rpms will go up. How much of course depends on speed and so on. Maybe if when down shifting, are you hitting the gas? As that would be the only thing I can think of. That or say you are at 120km. Down shift fro m 5th to 4th go down to 100 and then 4th to 3rd. The rpms of course will increase as required.

Is this your first car or first manual?

[mazda72]

Ive had this happen to me more then a few tims over the past 8 months. I always assumed it was me until it happened a few more times. Ill go into mazda and talk to them but i cant recreate it at a moments notice, its sparatic

to descrive it, imagine coming down the off ramp, 6-5, 5-4, 4-3. and when you hit 3rd, the rpms jump to 4k-4.5k and does a pull then stops. Like when your in 1st gear, and ride the clutch a little too long then pop the clutch. it jerks you forward. same thing


I have experienced the same problem with my Skyactiv, when Im shifting into 3rd gear the rpms suddenly surge to 4.5-5k. It doesnt happen all the time but it did happen couple of times already. Im suprised nobody has yet mentioned anything around here. Ive been driving manual transmission cars for a long time almost 20 years now, none of my previous cars did that.

Theres a whole thread on this on mazdarevolution forum




http://mazda3revolution.com/forums/2012-2013-mazda-3-skyactiv-engine-performance/11419-skyactiv-downshifting-surging.html

[greyseason]

Well a down shift rpm increase makes sense as when going down from any gear the rpms will go up. How much of course depends on speed and so on. Maybe if when down shifting, are you hitting the gas? As that would be the only thing I can think of. That or say you are at 120km. Down shift fro m 5th to 4th go down to 100 and then 4th to 3rd. The rpms of course will increase as required.

Is this your first car or first manual?
It is my first manual, but not my first car. And no im not "blipping' the throttle, only because I know how to rev match downhift. I wish i could pick somone up for a spin and try and fogure it out lol.

when the rpms ioncrease, it jump up say 3-4k rpm, then will come back down to 2-2.5k rpm like it should be

[Gata]

It is my first manual, but not my first car. And no im not "blipping' the throttle, only because I know how to rev match downhift. I wish i could pick somone up for a spin and try and fogure it out lol.

when the rpms ioncrease, it jump up say 3-4k rpm, then will come back down to 2-2.5k rpm like it should be

Last night I was shifting from 5th to 4rt gear and speed was about 70 km/h and soon I let go off cluch car accelerated. It lasted for 2-3 sec. Speed went up to almost 80 km/h. Gas pedal was not stuck because rpm would go up when clutch is pushed down. I had this acceleration from 2dn to 3rd gear, from 3rd to 4th, I would let go off cluch and I did not push gas pedal but car would accelerate for 2-3 sec and then would stop.
Mazda dealer did softwere update but it did not solve issue.
I'm 40 years old, I come from Europe and I have been driving manuals for over 20 years. Some thing is wrong with 2012 mazda 3 sport sky and for me this is safety issue. My next step will be to contact Mazda Canada and then Ministry of Transportation

[Booter22]

Last night I was shifting from 5th to 4rt gear and speed was about 70 km/h and soon I let go off cluch car accelerated. It lasted for 2-3 sec. Speed went up to almost 80 km/h. Gas pedal was not stuck because rpm would go up when clutch is pushed down. I had this acceleration from 2dn to 3rd gear, from 3rd to 4th, I would let go off cluch and I did not push gas pedal but car would accelerate for 2-3 sec and then would stop.
Mazda dealer did softwere update but it did not solve issue.
I'm 40 years old, I come from Europe and I have been driving manuals for over 20 years. Some thing is wrong with 2012 mazda 3 sport sky and for me this is safety issue. My next step will be to contact Mazda Canada and then Ministry of Transportation

i dont want to insult you in anyway, but if someone else can drive the car and can not duplicate whats going on. my only thought is it could be driver error. is there any way you are hitting or tapping the gas when shifting? are you wearing wide shoes where maybe if you are slowing down and hitting the brake you are just touching the gas pedal at the same time?

of course you could call into mazda canada and the ministry of transport but it always starts out with. have you had the vehicle inspected at the dealer. what was the result, what did they find, if that 1 dealer could not find it, are you able to duplicate it to show them what happens? does the car do it every time or is it once a day, during the morning when cold, after an hour of driving, so on and so forth. if the 1 dealer can not duplicate your concern maybe try another dealer. if no one can see if the service manager would be able to talk to the dealer rep about putting a black box ( recording box) in the car to monitor what is going on when you are driving the car. as of course if it doesnt happen at the dealer that would be the next step to take to try and figure out what is going on.

just my:.02

[Gata]

i dont want to insult you in anyway, but if someone else can drive the car and can not duplicate whats going on. my only thought is it could be driver error. is there any way you are hitting or tapping the gas when shifting? are you wearing wide shoes where maybe if you are slowing down and hitting the brake you are just touching the gas pedal at the same time?

of course you could call into mazda canada and the ministry of transport but it always starts out with. have you had the vehicle inspected at the dealer. what was the result, what did they find, if that 1 dealer could not find it, are you able to duplicate it to show them what happens? does the car do it every time or is it once a day, during the morning when cold, after an hour of driving, so on and so forth. if the 1 dealer can not duplicate your concern maybe try another dealer. if no one can see if the service manager would be able to talk to the dealer rep about putting a black box ( recording box) in the car to monitor what is going on when you are driving the car. as of course if it doesnt happen at the dealer that would be the next step to take to try and figure out what is going on.

just my:.02

Like I said before, I would notice if I'm touching gas pedal and I find you comment about that insulting. Yes, car is inspected at Mazda dealer, read before posting such question. I'm trying to find patter here and I have my foot far away as posible from gas pedal after shifting gears. It will not happpen all the time and there is no pattern. It does it shift up and shift down, cold or warmed up, after 5 min or after 1hour. It might happen today but nothing next two days.There is no patter. Most dangerous is when shift is from 3rd to 2nd gear and engine should do some of breaking. Insted car accelerates on its own and I have to react really quickly not to hit car in front of me and push break harder or cluch again. Last few weeks I make sure there is extra space between me and car in front. Mazda Dealer said that car has a black box and will record only if a general fault comes on or check engine light comes on, so no record because computer does not see it as fault.
I aslo have 2005 mazda 3 manual and there is no problem there. Shift is perfect.

[Booter22]

Like I said before, I would notice if I'm touching gas pedal and I find you comment about that insulting. Yes, car is inspected at Mazda dealer, read before posting such question. I'm trying to find patter here and I have my foot far away as posible from gas pedal after shifting gears. It will not happpen all the time and there is no pattern. It does it shift up and shift down, cold or warmed up, after 5 min or after 1hour. It might happen today but nothing next two days.There is no patter. Most dangerous is when shift is from 3rd to 2nd gear and engine should do some of breaking. Insted car accelerates on its own and I have to react really quickly not to hit car in front of me and push break harder or cluch again. Last few weeks I make sure there is extra space between me and car in front. Mazda Dealer said that car has a black box and will record only if a general fault comes on or check engine light comes on, so no record because computer does not see it as fault. I aslo have 2005 mazda 3 manual and there is no problem there. Shift is perfect.

again like i said i am not trying to insult you and that was not my intention. i have seen enough to know that sometimes when someone thinks they are not hitting the gas they are. i know that sounds like something you would notice but again some people dont which is why i asked about wearing wider boots. i also am aware the vehicle was inspected at another dealer, what i was saying was that if you call Mazda canada or the Ministry Of transport those are questions they might ask you. but as mentioned if it can not be duplicated it makes it hard to diag which is why i would think they might put a box in.

but if you have talked to them about that then call mazda canada and see what they would advise as your next step.

[Gata]

again like i said i am not trying to insult you and that was not my intention. i have seen enough to know that sometimes when someone thinks they are not hitting the gas they are. i know that sounds like something you would notice but again some people dont which is why i asked about wearing wider boots. i also am aware the vehicle was inspected at another dealer, what i was saying was that if you call Mazda canada or the Ministry Of transport those are questions they might ask you. but as mentioned if it can not be duplicated it makes it hard to diag which is why i would think they might put a box in.

but if you have talked to them about that then call mazda canada and see what they would advise as your next step.

Booter22, are you employee at Mazda dealer? Because your questions and comments sure sound like one. You are not helping with your replays. Forums are about helping and finding solution, productive discussion. I just hope that one of yours over 3000 comment helped someone, other ways you are just wasting time and space here. No insult intended.

[XTOTHEL]

Booter22, are you employee at Mazda dealer? Because your questions and comments sure sound like one. You are not helping with your replays. Forums are about helping and finding solution, productive discussion. I just hope that one of yours over 3000 comment helped someone, other ways you are just wasting time and space here. No insult intended.

If you've ever met Booter22 in person, you would know that he tries his best to help people on the forums as well as at the dealership. I feel like someone's a little too sensitive.

[Booter22]

Booter22, are you employee at Mazda dealer? Because your questions and comments sure sound like one. You are not helping with your replays. Forums are about helping and finding solution, productive discussion. I just hope that one of yours over 3000 comment helped someone, other ways you are just wasting time and space here. No insult intended.

yes i work at a mazda dealer, yes my questions are directed to you if i was the one trying to help you, so if i had to explain it to a tech i would have as much information as possible and try to get some direction as to what the car or you may be doing when it happens. you are new to the fourm so i will give you the benefit of the doubt that you are frustrated with your vehicle and not with myself for asking questions to try to answer those questions so i could offer you further direction to try and HELP you and ADVISE you as to what to do next.

as in the mazda system there is different directions and ways to look at different concerns:

2012 - Mazda3 - Engine
NO.8 ENGINE RUNS ROUGH/ROLLING IDLE [MZR 2.0, MZR 2.5]
ENGINE RUNS ROUGH/ROLLING IDLE

DESCRIPTION
•Engine speed fluctuates between specified idle speed and lower speed, and engine shakes excessively.

•Idle speed is too slow and engine shakes excessively.

2012 - Mazda3 - Engine
NO.7 SLOW RETURN TO IDLE [MZR 2.0, MZR 2.5]
SLOW RETURN TO IDLE

DESCRIPTION
•Engine takes more time than normal to return to idle speed.

2012 - Mazda3 - Engine NO.11 ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES, BUCK/JERK, HESITATION/STUMBLE, SURGES [MZR 2.0, MZR 2.5] - I would suspect this is closest to your concern.. but if i didnt ask you any questions i would have not come to conclude this.

ENGINE STALLS/QUITS—ACCELERATION/CRUISE

ENGINE RUNS ROUGH—ACCELERATION/CRUISE

MISSES—ACCELERATION/CRUISE

BUCK/JERK—ACCELERATION/CRUISE/DECELERATION

HESITATION/STUMBLE—ACCELERATION

SURGES—ACCELERATION/CRUISE

DESCRIPTION
•Engine stops unexpectedly at the beginning of acceleration or during acceleration.

•Engine stops unexpectedly while cruising.

•Engine speed fluctuates during acceleration or cruising. - Again sounds related to your concern

•Engine misses during acceleration or cruising.

•Vehicle bucks/jerks during acceleration, cruising, or deceleration. - may also be related

•Momentary pause at beginning of acceleration or during acceleration.

•Momentary minor irregularity in engine output.

With A "POSSIBLE CAUSE" List Of

•Drive-by-wire control system operates with brake override system

•Air cleaner restriction

•Clutch slippage (MTX)

•Electrical connector disconnected

•Poor fuel quality

•Ignition wiring malfunction

•Air leakage from intake air system

•Intake air system restriction

•Improper installation of EGR valve

•Vacuum leakage

•Engine mount loose

•PCM DTC is stored

•Engine overheating

•Ignition system malfunction

•Throttle valve restriction or clogged

•Erratic signal to PCM

■APP sensor or related wiring harness malfunction

■TP sensor or related wiring harness malfunction

■CKP sensor or related wiring harness malfunction

■MAF sensor or related wiring harness malfunction

■Battery power supply circuit malfunction

■VSS or related wiring harness malfunction

•CKP sensor and teeth of crankshaft pulley malfunction

•Spark plug malfunction

•Improper operation of drive-by-wire control system

•Exhaust system part malfunction

•Excessive or insufficient fuel pressure

■Fuel pump relay or fuel pump circuit malfunction

■Restriction in fuel line

■Pressure regulator malfunction

■Fuel pump unit malfunction

•Fuel leakage from fuel system

•Fuel injector malfunction

•Improper operation of A/C control system

•Improper operation of cruise control system

•A/F sensor malfunction

•Fuel shut-off valve malfunction

•Purge solenoid valve malfunction

•Evaporative emission control system malfunction

•CMP sensor and teeth of camshaft malfunction

•Improper operation of variable valve timing control system

•Improper operation of EGR valve

•Low engine compression

•PCV valve malfunction

•Improper valve timing

•ATX internal malfunction (ATX)

•EGR valve mechanical stuck

•Check valve (two-way) malfunction

So hopefully that helps to answer why I have been asking so many questions, its not to insult anyone. that is not ever my intention, however to find out as much infomation as possible, but you were my customer at the desk i would ask you all of the same questions. So ask your dealer, make another appointment, have them look at that note

Under 2012 Mazda3/Mazdaspeed3 Service Manuals

Under- Symptom Troubleshooting

2012 - Mazda3 - Engine
NO.11 ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES, BUCK/JERK, HESITATION/STUMBLE, SURGES [MZR 2.0, MZR 2.5]

[r4mi5awi]

Similar problem but on an A/T Skyactiv


http://www.youtube.com/watch?v=8B2YAzmhMfE



Booter22, are you employee at Mazda dealer? Because your questions and comments sure sound like one. You are not helping with your replays. Forums are about helping and finding solution, productive discussion. I just hope that one of yours over 3000 comment helped someone, other ways you are just wasting time and space here. No insult intended.

Sheesh! Talk about being asked for help and then getting spit on directly at the face.

[greyseason]

Booter22, are you employee at Mazda dealer? Because your questions and comments sure sound like one. You are not helping with your replays. Forums are about helping and finding solution, productive discussion. I just hope that one of yours over 3000 comment helped someone, other ways you are just wasting time and space here. No insult intended.

You seem like a little bitch. you have a problem, and OTHER people are trying to help you with YOUR problem. It just so happens that it concerens other members as well. We'd all like an explanation, but booter is trying to help you, being friendly about it, and giving you the information you need. I cant believe some people.

[gotak]

Booter22, are you employee at Mazda dealer? Because your questions and comments sure sound like one. You are not helping with your replays. Forums are about helping and finding solution, productive discussion. I just hope that one of yours over 3000 comment helped someone, other ways you are just wasting time and space here. No insult intended.

His questions are completely reasonable. Audi lost a decade in North America due to people thinking they have an unintended acceleration issue. Mostly due to one of the TV network faking a video showing an audi driving away on it's own (they got sued and had to pay audi ). And all was due to the pedals being set up for manual cars in a automatic dominated north america. People were hitting the throttle without realizing it and than blaming audi for it.

So yes asking if you were wearing big boots is helping.