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smmra
12-20-2006, 11:22 AM
I was sitting in the wife's 5 yesterday and noticed a slight stumbling at idle. This being my first Mazda, I am not sure if this is a characteristic of the 2.3. Has any else experienced the same thing?

paging_drburgos
12-20-2006, 11:47 AM
same here. But I only notice when the car is cold and warming up.

the_saint
12-20-2006, 12:25 PM
Me three...I think.

Occasionally I'll get a buck or a hick-up when the 5 is cold. Just one, then it's fine.

olddaddy
12-20-2006, 12:59 PM
Ditto on my 5, sometimes when cold.

P5Alive
12-20-2006, 01:03 PM
The 'ole 5 does it when it's hot. Probably time for new plugs and wires.

smmra
12-20-2006, 01:14 PM
I seem to really notice the stumble once the engine has reached normal operating temp. It is quite annoying. The car has less than 4000 km on it. I guess I will bring it up when I get my first oil change next week.

doctorz
12-20-2006, 01:17 PM
I've never noticed a stumble on idle. In fact, just the other day I was thinking how smooth the 5 is on idle: no vibration, stumble, anything. Granted, the 5 is not my daily driver, but I've been behind the wheel probably half of its 10K miles.

the_saint
12-20-2006, 02:39 PM
The 'ole 5 does it when it's hot. Probably time for new plugs and wires.
lol, that's cool, but we're talking about the new Mazda5

http://img256.imageshack.us/img256/3293/58ev.th.jpg (http://img256.imageshack.us/my.php?image=58ev.jpg)

not the Prot5 :)

P5Alive
12-20-2006, 02:42 PM
lol, that's cool, but we're talking about the new Mazda5

http://img256.imageshack.us/img256/3293/58ev.th.jpg (http://img256.imageshack.us/my.php?image=58ev.jpg)

not the Prot5 :)

Whatever you do, DON'T try to fix it yourself or you'll void the warranty. Just take it to the dealer and let them phuck with it. It's probably nothing but it's better to be safe than sorry.

silverm5
12-20-2006, 04:01 PM
I've experienced my 5 stumble a few of times, during the first 2000 miles. And the engine was warm during those occasions. I thought that the engine was going to die. It hasn't happened in the last few months though.

Zoom5Zoom
12-20-2006, 08:11 PM
The 'ole 5 does it when it's hot. Probably time for new plugs and wires.
LOL our Mazda 5 doesn't have any "SPARK PLUG" wires.... na na (ughdance)

1 PHAT 5
12-21-2006, 09:40 AM
lol, that's cool, but we're talking about the new Mazda5

http://img256.imageshack.us/img256/3293/58ev.th.jpg (http://img256.imageshack.us/my.php?image=58ev.jpg)

not the Prot5 :)
Wassup fellow Omaha resident. Nice 5. Is that one yours? Differen H&T lights.

1 PHAT 5
12-21-2006, 09:41 AM
Oh sorry, my 5 stumbles every once in awhile and the tranny sometimes takes is sweet time upshifting.

the_saint
12-21-2006, 09:58 AM
Wassup fellow Omaha resident. Nice 5. Is that one yours? Differen H&T lights.You missed the most obvious difference...it's RED!
lol, no it's not mine, it's just a pic from my Premacy gallery.

Oh sorry, my 5 stumbles every once in awhile and the tranny sometimes takes is sweet time upshifting.Oh man, I hear that. I think that's my biggest gripe about the 5, right after the freezing latches and the suspension noises.

7red7
12-21-2006, 03:29 PM
OMG!!! I just had this happen to me for the first time yesterday afternoon!!! I was stopped at a red light, and when I began to accelerate the engine seemed to stutter a bit...It was similar to a misfire, and I thought for a second the car was going to stall on me...The temps here in my area were barely in the low 30's yesterday, and were probably the coldest my 5 has seen I've purchased it...It did this again and again until we were driving about a half hour or so and then suddenly the issue disappeared...

A quick trip into the service department today revealed nothing wrong at all and the tech was unable to duplicate the issue...Oh, and the temp is about 40 degrees with rain today...I was sent home with the newfound knowledge that these cars can sometimes exhibit this behavior before the engine warms up to what the tech said was "optimum performance levels"...

I hate to sound high and mighty on this one, but with the technology we have today, I can't accept a brand new car having issues in cold temps like this...I need the car that my family depends on everyday to perform consistantly and safely...

nicktwist
12-21-2006, 05:02 PM
OMG!!! I just had this happen to me for the first time yesterday afternoon!!! I was stopped at a red light, and when I began to accelerate the engine seemed to stutter a bit...It was similar to a misfire, and I thought for a second the car was going to stall on me...

Wow!!! this has happened to me a few times....my 5 is a five speed and it seems to happen out for me after engaging 2nd gear and the car is cold, its like i have shifted too early and it wants to stall, but after the stutter its still able to pull out of that gear, so i am not sure whats up....i've never had this happen with any of my other cars that are stick....lately when the car is cold i have been just riding the 1st gear out a lil longer and it hasnt happened since...so who knows....well just putting in my experience....merry xmas everyone!

paging_drburgos
12-21-2006, 05:49 PM
I hate to sound high and mighty on this one, but with the technology we have today, I can't accept a brand new car having issues in cold temps like this...I need the car that my family depends on everyday to perform consistantly and safely...[/QUOTE]

That's what i'm sayin. I've had mine actually turn off twice in the morning when accelerating from a stop. Since then i've had it stutter a few times.

Oh and mines an auto and it seemed like it stalled in between 1st and 2nd

MP5Alive
12-22-2006, 03:43 AM
had this happened to me too several times now. i don't idle the car for more than 30 seconds at most before leaving. it's pretty scary when you're stopped at a "T" intersection waiting to turn and the car nearly stalls during the turn with oncoming traffic heading toward you. this is starting to piss me off now. but after that, it's fine. just one stumble and that's it.

igdrasil
12-22-2006, 03:56 AM
thats mazda ecu...it also happens on Protege5's, not so often.

mazdadude
12-22-2006, 12:57 PM
I have had the same thing happen several times on the first and second 1-2 Shifts of the morning (was 25 degree F cold am).

Also twice to me and twice for my wife, the motor stalled when pushing accelerator first time in morning when backing up (was a cold am).

However these events occurred in the first couple months of driving and have not resurfaced again.

Since we are coming into our cold season here in No Cal, I will be curious to see if they resurface again with the cold temperatures. (Yes I know that 25 degrees F isn't as cold as some of you see, but it is about the lowest we see around here) :)

1 PHAT 5
12-22-2006, 01:11 PM
Now that I think about it, my P5 used to do similar stumbles, especially when cold. Best bet is it just try and let your car warm up as much as possible before driving.

7red7
12-22-2006, 05:41 PM
That's what i'm sayin. I've had mine actually turn off twice in the morning when accelerating from a stop. Since then i've had it stutter a few times.

Oh and mines an auto and it seemed like it stalled in between 1st and 2nd


Mine is an auto as well...

Having the car actually stall out is my biggest concern...I haven't been in that situation yet, but I can't imagine how scary it would be to stall making a left turn while oncoming traffic barrels toward me...I told my wife she's going to be bound to our Scion xA until the cold season passes...

What really gets me though is the techs at the dealership (and this is a great dealership that I would easily recommend to anyone from my previous service there) said that this is "normal" until the engine reaches its "optimum performance temperature"...My reply to the tech was "Okay then seeing as my car is going to be placing additional risks while driving for me and my family, how about getting Mazda to install something to let the driver know exactly "WHEN" that temp has been reached and it is safe to back the car out of a driveway or parking space???

I feel really sorry for all of our friends in Canada and in the mid-West and East coast...In Northern California we dip into the low 20's at best, but you guys get rain, snow, and hail this time of year with temps well below zero...

Drive carefully and stay safe out there everyone...

DAN

Wytchdctr
12-22-2006, 08:58 PM
stupid question, what octane gas are those who are having the stumbling running, 93? My 5 hates anything over 87 octane so thats what I run (book says thats what the ECM is setup for). The reason I ask is my hyundai has a somewhat similar problem with high octane gas and cool temps, because its ecm is setup for low octane fuel. My issue was not very bad but I'm anal so I felt it. I stopped wasting money on higher octane fuel (after learning more about octane, fuel, and ignition maps) and the "stall" problem went away. Octane + cooler temps = higher resistance to burn. Just a thought, don't know if its even close to what the problem actually is.

X10James
12-23-2006, 10:41 PM
mine has never stalled (probably cause it never gets that cold here, or at least not very often or for very long) but I've felt that heart stopping hesitation. Takes me back in my mind to driving my old 84 honda accord which I finally got rid of after it caught fire! That thing stalled out all the time due to a bad carburetor ruined by a faulty fuel filler tube that let water get in and ruin it. Even though it was a long time ago, I still have flashbacks...

I agree stalling out at any time cannot be considered "normal"

7red7
12-24-2006, 03:39 PM
stupid question, what octane gas are those who are having the stumbling running, 93? My 5 hates anything over 87 octane so thats what I run (book says thats what the ECM is setup for). The reason I ask is my hyundai has a somewhat similar problem with high octane gas and cool temps, because its ecm is setup for low octane fuel. My issue was not very bad but I'm anal so I felt it. I stopped wasting money on higher octane fuel (after learning more about octane, fuel, and ignition maps) and the "stall" problem went away. Octane + cooler temps = higher resistance to burn. Just a thought, don't know if its even close to what the problem actually is.

Very interesting that you bring this up...I use nothing but 91 octane gas in my 5...I always figured it would give me the best burn off and performance...Wow is it true that our 5's are rated to be driven at 87 octane???

Oh and I know this is going to sound stupid and all, but please forgive me I'm nowhere near mechanically inclined when it comes to modern motors...Would my switching to 87 octane gas now after running the 91 in the tank since I purchased the car in April of this year have any adverse effects on the engine??? Also, how does the car perform for you with the lower octane gas???

Thanks!!!

DAN

Wytchdctr
12-24-2006, 05:02 PM
book actually says no lower than 87. Normally what they put in the manual is what the ecm is setup to run.

If you ecm is mapped to run high octane, run it. With new engines you wont hurt it running lower octane but the ecm has ways of knowing("hearing" slight knock etc) and will pull back ignition timing, run rich, and possibly in our case change cam timing to protect itself. If its a turboed engine the effect on performance will be VERY noticeable and in hot conditions could be dangerous. All of that would cause a drop in performance and crappy gas millage. Any resistance to burn (octane rating) over what the ecm is setup for will not increase performance. The ecm will run on whatever maps mazda gave it. There is no way for it to know,.. o hey I have good gas lemme turn up the timing. If you go way over the set rating you might not get a complete burn. Like one idiot I saw at the track who put 110 (i think) into a stock focus and had some issues starting/ran like crap once the lower octane fuel was out of the system.

So will you hurt it, not at all. If you want to get the best fuel in your car follow these two tips. Run Top-Teir fuel at your ECMs octane rating (same gas as cheapo stations but better cleaning agents) and find a station that doesn't keep fuel very long. If its a busy station that is always refilling its tanks there is less of a chance the gas you are getting has moisture in it from condensation in the tanks.

I tried running high octane in my 5 and to me it didn't seem to like it as much as when I pumped 87 into it.

X10James
12-25-2006, 11:20 PM
forgot to mention that I've only ever put 87 into mine. No way I was buying a car that required anything more for all my trips to the grocery store ;) Now, someday I will get my mid life crisis car, and it will probably require something better :D

Wytchdctr
12-26-2006, 12:52 AM
well my idea just went out the window, lol. I tried :)

7red7
12-26-2006, 03:04 AM
book actually says no lower than 87. Normally what they put in the manual is what the ecm is setup to run.

If you ecm is mapped to run high octane, run it. With new engines you wont hurt it running lower octane but the ecm has ways of knowing("hearing" slight knock etc) and will pull back ignition timing, run rich, and possibly in our case change cam timing to protect itself. If its a turboed engine the effect on performance will be VERY noticeable and in hot conditions could be dangerous. All of that would cause a drop in performance and crappy gas millage. Any resistance to burn (octane rating) over what the ecm is setup for will not increase performance. The ecm will run on whatever maps mazda gave it. There is no way for it to know,.. o hey I have good gas lemme turn up the timing. If you go way over the set rating you might not get a complete burn. Like one idiot I saw at the track who put 110 (i think) into a stock focus and had some issues starting/ran like crap once the lower octane fuel was out of the system.

So will you hurt it, not at all. If you want to get the best fuel in your car follow these two tips. Run Top-Teir fuel at your ECMs octane rating (same gas as cheapo stations but better cleaning agents) and find a station that doesn't keep fuel very long. If its a busy station that is always refilling its tanks there is less of a chance the gas you are getting has moisture in it from condensation in the tanks.

I tried running high octane in my 5 and to me it didn't seem to like it as much as when I pumped 87 into it.

Thanks so much for all of the feedback!!! I'll try and run 87 octane on my next refill and see how it runs then on colder days...And of course, I'll post my findings right here too :D

Wytchdctr
12-26-2006, 06:41 PM
Some people really think that higher makes there cars feel better. Ive seen dyno proof that high octane does nothing on a hyundai, yet we have people on our boards that will argue all day about it, lol.

fam
12-28-2006, 11:40 AM
Mine stubles but dealer cant reproduce it so no fix. Even after its warmed up sometimes cold or hot, its when you go to take off from a stop and I apply about 40% gas all of the sudden it sometimes hesitates.

danix
01-02-2007, 12:07 AM
Very interesting to find this thread. Yeah, ours stumbles too. My wife didn't notice it, but of course I did. 1200 miles and it's still there.

jandree22
01-24-2007, 10:00 AM
Add me to this club... at least I'm not alone with this, I hate to say. :(
http://www.mazdas247.com/forum/showthread.php?p=2939987

I wonder how MazdaUSA would respond if I emailed them a link to this topic.

2cam16
01-24-2007, 10:55 PM
It started happening more often since our morning temps have dropped into the 30's-40's. Same thing, only happens once and it's back to normal. Sheesh!!

jandree22
01-26-2007, 08:47 AM
Got a reply back from MazdaUSA and they gave me the somewhat expected canned line of “We’re not technically trained, take this to your Mazda Dealership to get checked.” I tried to emphasize that the issue is pretty widespread, but didn’t seem to make a difference. Oh well…

jandree22
01-26-2007, 09:18 AM
Does anyone here have access to pull up TSB’s? I found one description for the 5 that may address this. This is the only detail I could get without paying for a subscription to the website…
0100206 JUL 06 Engine Controls - Rough Idle/Hesitation/DTC P0300 Set

Wytchdctr
01-26-2007, 07:37 PM
Got a reply back from MazdaUSA and they gave me the somewhat expected canned line of “We’re not technically trained, take this to your Mazda Dealership to get checked.” I tried to emphasize that the issue is pretty widespread, but didn’t seem to make a difference. Oh well…


I got that same dang reply to my question about the oil level vs. the book. I was thinking about replacing my elantra with a MS3 next year. With the problems everyone seems to be having without being answered. New SI is looking nicer by the minute,

jandree22
01-26-2007, 09:07 PM
New SI is looking nicer by the minute,
Sat in a Si Sedan last night at the PA Auto show... very nice. Looks awesome, cept for the ricey "DOHC VTEC" stickers on the rear doors. Then again, the MS3 is perhaps one of the sexiest cars EV4R! :D

zoomzoom mazda5
01-27-2007, 11:02 PM
My done the same thing a few times in about 8 months since i got it, most of the time when the weather is foggy and temp. is below 50.

rrajaballey
01-29-2007, 02:45 PM
My done the same thing a few times in about 8 months since i got it, most of the time when the weather is foggy and temp. is below 50.

The Edmunds forum has this thread which may be the same issue. http://townhall-talk.edmunds.com/direct/view/.ef90f58/1063

It may be a grounding issue.

jandree22
01-29-2007, 06:46 PM
hmmm... interesting. thanks

Rainman
01-30-2007, 10:27 PM
My MS3 does the same thing when the engine is cold and we only use Sunoco 94 octane fuel. Never a problem once the engine is warm though.

R

the_saint
01-31-2007, 08:20 AM
I'm beginning to think that it's not quite a fuel delivery thing but maybe more to do with the trans. It happened to me twice yesterday within a few seconds of eachother...it was during the 2-3 shift and the 3-4 shift (automatic). And the car was cold.

I too have noticed that if you let the car warm up for a few minutes when it's cold out, it seems to be ok. But I was in a hurry and didn't let the car warm up yesterday (was 10°F)

jandree22
01-31-2007, 08:45 AM
I agree saint, it always happens immediately following my 1-2 shift, but it could also be something in the ECU as far as the drop in revs combined with throttling? Also, seems to happen to both the 5MT and 4AT. It’s going in for service on Monday and the low temp that day is forecast to be 8*F. I let them know it only happens when it’s cold so they’re going to take it out first thing. Hopefully they can duplicate and finally acknowledge this issue.

Warming up the car is a good thing to do regardless plus it takes care of this problem apparently, but I still shouldn’t have this problem if I misbehave and don’t fully warm it up. I just hope they can find something.

Wytchdctr
01-31-2007, 06:52 PM
Could it be the cars fuel map running lean to get the cats going faster?

MD5
02-02-2007, 04:56 PM
Mine started doing this this winter. I never noticed it in the warmer months, but it has happened about 5-6 times.

I've not noticed a definate pattern, but it is when you are going up through the gears.

I'll keep an eye on this thread and see if the car keeps doing it. It hasn't happened for a couple of weeks.

Matt

MD5
02-03-2007, 10:50 AM
Well, it happened today leaving the gym at about 9am.

It was a crisp 23 degrees (F) and I was pulling out of the parking lot going from 1st to 2d. I was about to make the upshift and it bucked like it was the first time I'd ever driven a stick.

loser174
02-04-2007, 01:57 AM
Hey guys little help here

My car is taking along time to start and the RPMs keep on bottoming out while I'm my car is idle. When I'm driving and shifting between gears the car is fine. It just keeps on trying to shut off while I slow down for a stop light or when the car is idling.

Help please

jandree22
02-04-2007, 02:46 AM
Hey guys little help here

My car is taking along time to start and the RPMs keep on bottoming out while I'm my car is idle. When I'm driving and shifting between gears the car is fine. It just keeps on trying to shut off while I slow down for a stop light or when the car is idling.

Help please
This is not the same issue we're talking about, and this should easily come up on the diagnostic computer in the shop. Take it (or get it towed) to your local Mazda dealership to get checked out. This is what the warranty is for ;)

Good luck.

gone_fishin
02-04-2007, 02:52 AM
This is not the same issue we're talking about, and this should easily come up on the diagnostic computer in the shop. Take it (or get it towed) to your local Mazda dealership to get checked out. This is what the warranty is for ;)

Good luck.

Jandree, your avatar cracks me up.

A code wouldn't come up on a diagnostics computer unless there is a CEL. It sounds like a vacuum leak. Vacuum leaks could be due to any number of things. Check the entire intake track and intake manifold for leaks. Secondly, get some carb cleaner and spray it on the perimeter of where the intake manifold bolts to the head while the car is running. If the engine revs slightly, you need to replace the gasket. Also make sure your EGR pipe is secure, and your TB and IM are torqued down properly.

jandree22
02-05-2007, 11:58 AM
Well, got this checked out today and they were not able to duplicate the issue… as I expected. Seems like this happens 50% of the time when I don’t warm up the car and so far it’s never happened if I warm the car up for about 2 min. It was 7*F this morning.

Oh well, I still have a few years left in the warranty if it gets worse.

paging_drburgos
02-12-2007, 06:23 PM
yeah this is really bothering me. it happened twice last week.

The Monkey
03-10-2007, 01:17 AM
I have a new 06 with around 500 miles and I notice that my idle is a bit rough and jumpy when I'm sitting at lights. If I put it in neutral it all smooths out. I'm wondering if I should get mazda to look at it. I hear some people talk about putting a larger gauge grounding wire to fix the problem. Though I doubt a dealership would ever suggest something like that. Anyways, she's going in Monday for some other stuff so if you all have any suggestions let me know and I'll hit up the service peeps.

The Monkey
03-10-2007, 01:33 AM
I haven't been able to find this TSB anywhere....can you post a link.

Does anyone here have access to pull up TSB’s? I found one description for the 5 that may address this. This is the only detail I could get without paying for a subscription to the website…

bulwnkl
03-10-2007, 11:40 AM
Could it be the cars fuel map running lean to get the cats going faster?

Wytchdctr, I think you have the right issue, but in the wrong direction. Mazda (and many/most other manufacturers currently) programs their ECUs to run rich to light the cats up faster. I mean really rich. Honda does the same thing for any that are thinking this is a "problem" with Mazdas. This is done for emissions performance. You can see it as fuel dilution in an oil analysis, and if you're good enough you can even still 'see' it in the analysis after the fuel has burned off (like if you drained the oil immediately after driving 300 miles at 80mph with maximum weight aboard).

Our MT 5 has done the hesitate/stumble thing a couple of times on the 1-2 upshift as well, so it's definitely not a transmission thing. And, while still quite smooth, the engine does run strangely (kinda rough) when first started up from fully cold.

jandree22
03-10-2007, 11:47 AM
My 5 hasn't hickup'ed in a while. For a while there it was every other morning. No clue what the ECU and/or I am doing differently.

The Monkey
03-20-2007, 10:00 PM
Anyone have the ability to post this TSB in detail?

ake : MAZDA Model : MAZDA5 Year : 2006
Manufacturer : MAZDA MOTOR CORP
Service Bulletin Num : 0100206 Date of Bulletin: JAN 26, 2006
NHTSA Item Number: 10019253
Component: ENGINE AND ENGINE COOLING
Summary:
ENGINE MISFIRE DIAGNOSTIC PROCEDURES - SERVICE TIP. *TT

tajabaho1
03-21-2007, 11:48 AM
hmm, maybe the engine is overworked? we know it's underpowered anyhow, just a theory, I modded it some and mine doesn't have a problem

MFive
04-05-2007, 12:45 PM
Same issues here. Stumble/hesitate, mostly in colder temps, but has happened in all temperatures, both engine and ambient. I, too, would be interested in the findings of the TSB.

AIMWO4
04-07-2007, 12:26 PM
That's why I got a manual... I had a 2.3L with an Auto that just ticked me off at idle in D or R.(braindead

Cinco
04-08-2007, 02:09 AM
All of a sudden my five-speed began to hesitate/ stumble this week. A couple of days ago I disconnected the negative battery terminal overnight and it seems to have cleared up so far. Call it a placebo effect but I feel MORE power now.

Wytchdctr
04-08-2007, 11:26 AM
Maybe not. I noticed that with my elantra, everyone called me crazy. At the same time of me first feeling that I noticed my plugs where white, showing lean. After starting to reset the ecm about every two weeks the car seemed faster and the plugs stayed a nice grey color. Someone reset and ecm at the track and dropped dang near half a sec in the 1/4. People still said we where crazy. Then someone got on a dyno. Reset the ecm and gained 5whp and 5lbs of torque. Not much you say, but when that was a 5lbs gain was just at peak. Much more torque below 3kand right up to peak after the reset. Why? The ecm learns lean to make better gas mileage. The peak numbers (hp @ 6000rpm and trq @ 4500) didn't change much because after 4.5k it was still a little rich to protect the motor even with the lean corretions. Right after a reset ill get 33mpg on the highway (dead on what the EPA rating was) Give the car a week or so to "relearn" its map correction and I can pull as high as 37 (normally 35.5). So I can make my car a little faster with a reset or leave it alone and get better gas mileage. I just wish I could make it happen with the flip of a switch. Still working on that. :D

AIMWO4
04-10-2007, 06:32 PM
You could wire a switch into fuse 37. That would be for your Air Flow Sensor and Engine Management System. :-)

Wytchdctr
04-10-2007, 10:02 PM
it takes a week to relearn and run lean again. (and thats on my other car, not the mazda)

fam
04-26-2007, 04:07 PM
My wife is starting to do it again more frequently in the last few weeks (warmer weather)....wierd.

jandree22
08-14-2007, 09:19 AM
I just learned about the concept between Open and Closed Loop in the ECU. My 5 did the little hiccup this morning (64*F), after only about 2 miles of driving… however it was enough that the temp gauge was sitting right in the middle. Because it seems that this happened JUST as the engine got warmed up, the transition from open to closed would’ve happened at the same time of the stumble. Also, while rare this sometime happens to people after they’ve been driving for a while but just in really cold weather… the ECU can go back into Open loop if the intake air would be cold enough or under some throttle conditions. This led me to speculate that maybe it’s the transition of the ECU from open loop to closed loop operation that’s the root cause?

I’m planning on getting a Scangauge II at some point in the future, and one function it’ll display is whether the ECU is in open or closed loop. This would be very interesting to see if it’s the cause of this freekin issue.

fam
08-21-2007, 11:05 PM
go for it man. Id like to fix it myself as well.

mountjonas
08-24-2007, 09:13 PM
my wife's 5 stumbled once about 6 months ago when i drove it. didn't think much of it. then it did it twice, yesterday and today when she was driving on the freeway. it's about 80 where we live, car was warmed up and she was slowing down for traffic and said it felt like the car almost died. 20k miles on her 5. maybe a trip to the dealer is in order.

hagow_boy
09-02-2007, 10:38 AM
My idle runs very low when I am stopped and about once a month, when I accelerate from a stopped position, the car will begin to accelerate and then cut off for a fraction of a second which could be quite scary if you are making a left turn with on coming traffic.

Took it into the dealership for my first service and mentioned the issue. They checked for flat spots in the power on take off and updated the software for the PCM.

It runs smoother now in general. Hopefully it solved the problem. If it didn't I'll post an update here.

sdjakk
09-21-2007, 06:13 PM
my wife just came to me about this problem in her 5... it was not cold out when it happened and the car was at normal operating temp. we have had the car for a year and this is the first time we have had this happen.
now that i see that we are not the only ones to have this happen, i am going to call the dealership. i would guess that it will be a dead-end talking to them... but at least it will start a paper trail so there wont be any warranty issues later.

Vinnyfast
10-24-2007, 03:25 PM
I'm sick of this crap with Mazda allegedly not know ing what the problem is, or how to fix it! They've had enough customers complain about it already!! It's happened to me too many times, but only max of once/day, usually first thing in the morning, less than a km from start. It's even happened a couple of times in the afternoon driving home from work (on the highway doing about 130km/hr). If it's happened to you, you know it scares the crap out of you!! I've had it in the dealer 3 times for this issue, and even called Mazda corp head office. Obviously it would cost them too much to fix (maybe a new ecm?), and don't want to bother with it. Currently, I'm looking for an external ecm programmer so I can reprogram it myself (while still being able to switch back to factory settings). this way, I can get more horsepower which it desperately needs!

I've already changed the muffler and installed a cold air intake, which definitely makes a difference in power, but want more!!! Other than that annoying jerk, the car's been great!! - 2 years old, 48,000km

2cam16
10-25-2007, 10:41 AM
Yup, ours still does it. Once a day, almost everyday, only in the morning. Kinda annoying.

maple_leaf
10-25-2007, 01:49 PM
Yup, ours still does it. Once a day, almost everyday, only in the morning. Kinda annoying.

Weird....

danix
10-29-2007, 02:13 PM
Our 5 is in the shop this morning for the idle issue. The service manager mentioned that a reflash would probably fix it. We'll see.

maple_leaf
10-29-2007, 03:41 PM
Our 5 is in the shop this morning for the idle issue. The service manager mentioned that a reflash would probably fix it. We'll see.

What year's yours? 06?

2cam16
11-01-2007, 11:36 PM
Our 5 is in the shop this morning for the idle issue. The service manager mentioned that a reflash would probably fix it. We'll see.
Any update ?

danix
11-09-2007, 08:18 PM
"No problem found." They said the ECU is running the latest code.
They did actually put 2 miles on it, so they did test it at least...