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Stuttering and check engine light



 
 
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  #11  
Old October 18th 05, 02:08 AM
Christopher Muto
external usenet poster
 
Posts: n/a
Default Stuttering and check engine light

could be, but assuming that is the reason then comes the question as to why
the cel is still on... could it be that all the misfires have fouled the
catalytic converter so now there is now an emissions problem?

"Leon van Dommelen" > wrote in message
...
> Rick Morris > wrote:
>
>>I was driving my 2001 MX-5 (26K, Red) around with my wife looking at the
>>Fall colors. The car had been stuck in the garage for close to a month as
>>I
>>had a pallet of building supplies blocking it's egress. Anyhow, got it
>>out
>>an went for a nice drive. About 1/2 hour into our drive the car started
>>acting like it was out of fuel. Almost like the ignition was being turned
>>on
>>an off. I got to a side street and noted that the car could not rev over
>>1,500 rpm without intermittently losing power. The check engine light came
>>on about that time. The car would idle but revving it above 1,500 rpm
>>again
>>caused it to cut power on and off. After about 5 minutes of this, the
>>whole
>>ting resolved and the car again drove as it always has. However, the check
>>engine light remains on now. Again, there are no current drivability
>>issues
>>but the check engine light is on. Any ideas of what happened?? I hate to
>>go
>>to the dealer but I guess I will need to have them look at it. No problems
>>ever before with the car. I assumed it was an electronic glitch. There
>>was
>>no backfiring, but the on-off power thing was almost like turning the
>>ignition switch on and off.

>
> It cannot have been water in the fuel that collected at the bottom of the
> tank while standing?
>
> Leon
>
>>Does one have to go to a Mazda dealer to see what happened or can any
>>competent independent shop help me??
>>
>>Weird!
>>
>>Thanks for any suggestions!!
>>
>>Rick

> --
> Leon van Dommelen Bozo, the White 96 Sebring Miata .)
> http://www.dommelen.net/miata
> EXIT THE INTERSTATES (Jamie Jensen)



Ads
  #12  
Old October 18th 05, 03:07 AM
Rick Morris
external usenet poster
 
Posts: n/a
Default Stuttering and check engine light

Oops! Originally just replied to Dana:

Okay, this afternoon's update. The check engine light is off and again the
car is exhibiting it's normal (joyful) drivability.
However, I am a little concerned about getting further than pushing distance
from home. I will check the plugs and wires as that seems easy enough.
Should I still do the scanner since there is no check engine light?? Does
the onboard computer store old information? Thanks for all the suggestions
so far. I hope to get this figured out as I had a Black Hills vacation in
mind for the late Spring.

Rick




On 10/17/05 2:58 PM, in article , "Dana H. Myers"
> wrote:

> Christopher Muto wrote:
>> ugh. sorry for the confusion. and thanks for pointing out my error.

>
> It could still be a bad coil, of course - I just don't know
> how the 'new' coil-on-plug coils do compared to the 'old'
> coils.
>
>
>>
>> "Dana H. Myers" > wrote in message
>> ...
>>
>>> Christopher Muto wrote:
>>>
>>>> i was thinking the same thing... but also the fuel filter and the plugs
>>>> are
>>>> suspect. yet that doesn't explain why the check engine light has stayed
>>>> on.
>>>> it represents so many possible things that only the reader could point
>>>> you
>>>> in the right direction... something is not right. if i had to hazard a
>>>> guess i might say it is a faulty coil pack. but if you didn't want to
>>>> spend
>>>> the time and money on dealer diagnostics the i suggest the removal of the
>>>> spark plugs to see if they are fouled. plugs are cheap and they might be
>>>> all that you need.
>>>
>>> The original poster has an '01, which doesn't feature the coil packs
>>> of the '00 and earlier models. Instead, the '01 and later have two
>>> coils which each plug directly down onto a spark plug; the tail of the
>>> coil is fed to another plug with a single wire. I do not know if the
>>> the coil-on-plug coils are more reliable than the previous coil-pack
>>> coils, but my experience so far with an '02 is that the stock plug wires
>>> die pretty quickly.
>>>
>>> Dana

>>
>>
>>


  #13  
Old October 18th 05, 04:02 AM
Christopher Muto
external usenet poster
 
Posts: n/a
Default Stuttering and check engine light

fwiw, my check engine lits regularly came on when the gas tank was between
3/4 and 1/2 full.... the good people here told me to tighten down the gas
cap and sure enough it has not come back since. mine is a '95 so i don't
know it it applies for you, but it certainly did for a friends late model
mpv.

"Rick Morris" > wrote in message
...
> Oops! Originally just replied to Dana:
>
> Okay, this afternoon's update. The check engine light is off and again
> the
> car is exhibiting it's normal (joyful) drivability.
> However, I am a little concerned about getting further than pushing
> distance
> from home. I will check the plugs and wires as that seems easy enough.
> Should I still do the scanner since there is no check engine light?? Does
> the onboard computer store old information? Thanks for all the
> suggestions
> so far. I hope to get this figured out as I had a Black Hills vacation in
> mind for the late Spring.
>
> Rick
>
>
>
>
> On 10/17/05 2:58 PM, in article , "Dana H.
> Myers"
> > wrote:
>
>> Christopher Muto wrote:
>>> ugh. sorry for the confusion. and thanks for pointing out my error.

>>
>> It could still be a bad coil, of course - I just don't know
>> how the 'new' coil-on-plug coils do compared to the 'old'
>> coils.
>>
>>
>>>
>>> "Dana H. Myers" > wrote in message
>>> ...
>>>
>>>> Christopher Muto wrote:
>>>>
>>>>> i was thinking the same thing... but also the fuel filter and the
>>>>> plugs
>>>>> are
>>>>> suspect. yet that doesn't explain why the check engine light has
>>>>> stayed
>>>>> on.
>>>>> it represents so many possible things that only the reader could point
>>>>> you
>>>>> in the right direction... something is not right. if i had to hazard
>>>>> a
>>>>> guess i might say it is a faulty coil pack. but if you didn't want to
>>>>> spend
>>>>> the time and money on dealer diagnostics the i suggest the removal of
>>>>> the
>>>>> spark plugs to see if they are fouled. plugs are cheap and they might
>>>>> be
>>>>> all that you need.
>>>>
>>>> The original poster has an '01, which doesn't feature the coil packs
>>>> of the '00 and earlier models. Instead, the '01 and later have two
>>>> coils which each plug directly down onto a spark plug; the tail of the
>>>> coil is fed to another plug with a single wire. I do not know if the
>>>> the coil-on-plug coils are more reliable than the previous coil-pack
>>>> coils, but my experience so far with an '02 is that the stock plug
>>>> wires
>>>> die pretty quickly.
>>>>
>>>> Dana
>>>
>>>
>>>

>



  #14  
Old October 18th 05, 08:43 AM
Kempi
external usenet poster
 
Posts: n/a
Default Stuttering and check engine light


"Rick Morris" > wrote in message
...

> Should I still do the scanner since there is no check engine light?? Does
> the onboard computer store old information?


Yes, a good scanner will show these codes as "pending".
You should do it ASAP because the codes get erased after certain time/car
runs.

Not so good news: OBD-II reader shows "pending" codes but it doesn't show
if they've
just occurred and will light up (CEL or MIL) check engine light
or if the symptoms just stopped showing after lighting up CEL.

So codes are pending > CEL on > pending

Regards,
Kempi
'01 silver


  #15  
Old October 18th 05, 12:28 PM
Leon van Dommelen
external usenet poster
 
Posts: n/a
Default Stuttering and check engine light

"Christopher Muto" > wrote:

>could be, but assuming that is the reason then comes the question as to why
>the cel is still on... could it be that all the misfires have fouled the
>catalytic converter so now there is now an emissions problem?


I don't think that happens that quickly. Doesn't on mine.

Leon

>"Leon van Dommelen" > wrote in message
.. .
>> Rick Morris > wrote:
>>
>>>I was driving my 2001 MX-5 (26K, Red) around with my wife looking at the
>>>Fall colors. The car had been stuck in the garage for close to a month as
>>>I
>>>had a pallet of building supplies blocking it's egress. Anyhow, got it
>>>out
>>>an went for a nice drive. About 1/2 hour into our drive the car started
>>>acting like it was out of fuel. Almost like the ignition was being turned
>>>on
>>>an off. I got to a side street and noted that the car could not rev over
>>>1,500 rpm without intermittently losing power. The check engine light came
>>>on about that time. The car would idle but revving it above 1,500 rpm
>>>again
>>>caused it to cut power on and off. After about 5 minutes of this, the
>>>whole
>>>ting resolved and the car again drove as it always has. However, the check
>>>engine light remains on now. Again, there are no current drivability
>>>issues
>>>but the check engine light is on. Any ideas of what happened?? I hate to
>>>go
>>>to the dealer but I guess I will need to have them look at it. No problems
>>>ever before with the car. I assumed it was an electronic glitch. There
>>>was
>>>no backfiring, but the on-off power thing was almost like turning the
>>>ignition switch on and off.

>>
>> It cannot have been water in the fuel that collected at the bottom of the
>> tank while standing?
>>
>> Leon
>>
>>>Does one have to go to a Mazda dealer to see what happened or can any
>>>competent independent shop help me??
>>>
>>>Weird!
>>>
>>>Thanks for any suggestions!!
>>>
>>>Rick

>> --
>> Leon van Dommelen Bozo, the White 96 Sebring Miata .)
>> http://www.dommelen.net/miata
>> EXIT THE INTERSTATES (Jamie Jensen)

>

--
Leon van Dommelen Bozo, the White 96 Sebring Miata .)
http://www.dommelen.net/miata
EXIT THE INTERSTATES (Jamie Jensen)
  #16  
Old November 2nd 05, 01:41 AM
Rick Morris
external usenet poster
 
Posts: n/a
Default Stuttering and check engine light

Alright, here is my two week update.

Car is running fine. Check engine light went off the day after this
incident. Have driven 100 miles without the slightest problem. I was going
to take the car to the dealer to have them check it out until I found out
that hooking it up to the computer to see what codes had been stored would
run $99. Found out that I could purchase a new OBD-II scanner for the same
price and took the leap. It is a cool thing and comes with a CD that you
can install on your computer. The CD has the codes, including manufacturer
codes. Anyhow, I plugged in the scanner and found the code that was stored
in conjunction with the incident was P1345 which according to my nifty
computer program is a "Cyl Discrimination Signal Camshaft Position" code.
Any ideas of what might have gone on here? I originally thought it was an
onboard computer glitch. Hmmmmm?
Anyhow, the car is running fine now and the only other action I have taken
is to run a bottle of Techron with the last tank of gas.

Ideas??

Thanks!!!!



On 10/16/05 10:18 PM, in article , "Rick
Morris" > wrote:

> I was driving my 2001 MX-5 (26K, Red) around with my wife looking at the
> Fall colors. The car had been stuck in the garage for close to a month as I
> had a pallet of building supplies blocking it's egress. Anyhow, got it out
> an went for a nice drive. About 1/2 hour into our drive the car started
> acting like it was out of fuel. Almost like the ignition was being turned on
> an off. I got to a side street and noted that the car could not rev over
> 1,500 rpm without intermittently losing power. The check engine light came
> on about that time. The car would idle but revving it above 1,500 rpm again
> caused it to cut power on and off. After about 5 minutes of this, the whole
> ting resolved and the car again drove as it always has. However, the check
> engine light remains on now. Again, there are no current drivability issues
> but the check engine light is on. Any ideas of what happened?? I hate to go
> to the dealer but I guess I will need to have them look at it. No problems
> ever before with the car. I assumed it was an electronic glitch. There was
> no backfiring, but the on-off power thing was almost like turning the
> ignition switch on and off.
>
> Does one have to go to a Mazda dealer to see what happened or can any
> competent independent shop help me??
>
> Weird!
>
> Thanks for any suggestions!!
>
> Rick
>


  #17  
Old November 2nd 05, 09:04 PM
Rusty Cadaret
external usenet poster
 
Posts: n/a
Default Stuttering and check engine light

I feel your pain.

I have a 2000 that is behaving the exact same way. Only mine has been
doing so for 18 months and has completely died and left me stranded 3
times.

The first time the O2 sensor was replaced. The check engine light came
back on 3 days later.

The second time the cam shaft positoin sensor was replaced. The check
engine light came on 3 days later.

The third time was 2 days ago and I am waiting to hear from the
dealship now. I hold out some hope that whatever it is really broke
this time becasue for the first time the car did not restart once it
had cooled down. The other 2 times it did restart once the engine
cooled down for an hour ro two.

The whole time the engine ran fine, execpt for the 3 times it stranded
me. The whole time the check engine light was on a mojority of the
time, but would go off for a day or so once every week or two.

Anybody else?

Rusty




On Wed, 02 Nov 2005 00:41:28 GMT, Rick Morris >
wrote:

>Alright, here is my two week update.
>
>Car is running fine. Check engine light went off the day after this
>incident. Have driven 100 miles without the slightest problem. I was going
>to take the car to the dealer to have them check it out until I found out
>that hooking it up to the computer to see what codes had been stored would
>run $99. Found out that I could purchase a new OBD-II scanner for the same
>price and took the leap. It is a cool thing and comes with a CD that you
>can install on your computer. The CD has the codes, including manufacturer
>codes. Anyhow, I plugged in the scanner and found the code that was stored
>in conjunction with the incident was P1345 which according to my nifty
>computer program is a "Cyl Discrimination Signal Camshaft Position" code.
>Any ideas of what might have gone on here? I originally thought it was an
>onboard computer glitch. Hmmmmm?
>Anyhow, the car is running fine now and the only other action I have taken
>is to run a bottle of Techron with the last tank of gas.
>
>Ideas??
>
>Thanks!!!!
>
>
>
>On 10/16/05 10:18 PM, in article , "Rick
>Morris" > wrote:
>
>> I was driving my 2001 MX-5 (26K, Red) around with my wife looking at the
>> Fall colors. The car had been stuck in the garage for close to a month as I
>> had a pallet of building supplies blocking it's egress. Anyhow, got it out
>> an went for a nice drive. About 1/2 hour into our drive the car started
>> acting like it was out of fuel. Almost like the ignition was being turned on
>> an off. I got to a side street and noted that the car could not rev over
>> 1,500 rpm without intermittently losing power. The check engine light came
>> on about that time. The car would idle but revving it above 1,500 rpm again
>> caused it to cut power on and off. After about 5 minutes of this, the whole
>> ting resolved and the car again drove as it always has. However, the check
>> engine light remains on now. Again, there are no current drivability issues
>> but the check engine light is on. Any ideas of what happened?? I hate to go
>> to the dealer but I guess I will need to have them look at it. No problems
>> ever before with the car. I assumed it was an electronic glitch. There was
>> no backfiring, but the on-off power thing was almost like turning the
>> ignition switch on and off.
>>
>> Does one have to go to a Mazda dealer to see what happened or can any
>> competent independent shop help me??
>>
>> Weird!
>>
>> Thanks for any suggestions!!
>>
>> Rick
>>


  #18  
Old November 2nd 05, 09:47 PM
Brian
external usenet poster
 
Posts: n/a
Default Stuttering and check engine light

I had a 2000; just traded it for a 1990 with a turbo. The 2000 had the
same problem as yours; but, the replacement of the cam sensor fixed the
problem for me.

Brian

Rusty Cadaret wrote:
> I feel your pain.
>
> I have a 2000 that is behaving the exact same way. Only mine has been
> doing so for 18 months and has completely died and left me stranded 3
> times.
>
> The first time the O2 sensor was replaced. The check engine light came
> back on 3 days later.
>
> The second time the cam shaft positoin sensor was replaced. The check
> engine light came on 3 days later.
>
> The third time was 2 days ago and I am waiting to hear from the
> dealship now. I hold out some hope that whatever it is really broke
> this time becasue for the first time the car did not restart once it
> had cooled down. The other 2 times it did restart once the engine
> cooled down for an hour ro two.
>
> The whole time the engine ran fine, execpt for the 3 times it stranded
> me. The whole time the check engine light was on a mojority of the
> time, but would go off for a day or so once every week or two.
>
> Anybody else?
>
> Rusty
>
>
>
>
> On Wed, 02 Nov 2005 00:41:28 GMT, Rick Morris >
> wrote:
>
>
>>Alright, here is my two week update.
>>
>>Car is running fine. Check engine light went off the day after this
>>incident. Have driven 100 miles without the slightest problem. I was going
>>to take the car to the dealer to have them check it out until I found out
>>that hooking it up to the computer to see what codes had been stored would
>>run $99. Found out that I could purchase a new OBD-II scanner for the same
>>price and took the leap. It is a cool thing and comes with a CD that you
>>can install on your computer. The CD has the codes, including manufacturer
>>codes. Anyhow, I plugged in the scanner and found the code that was stored
>>in conjunction with the incident was P1345 which according to my nifty
>>computer program is a "Cyl Discrimination Signal Camshaft Position" code.
>>Any ideas of what might have gone on here? I originally thought it was an
>>onboard computer glitch. Hmmmmm?
>>Anyhow, the car is running fine now and the only other action I have taken
>>is to run a bottle of Techron with the last tank of gas.
>>
>>Ideas??
>>
>>Thanks!!!!
>>
>>
>>
>>On 10/16/05 10:18 PM, in article , "Rick
>>Morris" > wrote:
>>
>>
>>>I was driving my 2001 MX-5 (26K, Red) around with my wife looking at the
>>>Fall colors. The car had been stuck in the garage for close to a month as I
>>>had a pallet of building supplies blocking it's egress. Anyhow, got it out
>>>an went for a nice drive. About 1/2 hour into our drive the car started
>>>acting like it was out of fuel. Almost like the ignition was being turned on
>>>an off. I got to a side street and noted that the car could not rev over
>>>1,500 rpm without intermittently losing power. The check engine light came
>>>on about that time. The car would idle but revving it above 1,500 rpm again
>>>caused it to cut power on and off. After about 5 minutes of this, the whole
>>>ting resolved and the car again drove as it always has. However, the check
>>>engine light remains on now. Again, there are no current drivability issues
>>>but the check engine light is on. Any ideas of what happened?? I hate to go
>>>to the dealer but I guess I will need to have them look at it. No problems
>>>ever before with the car. I assumed it was an electronic glitch. There was
>>>no backfiring, but the on-off power thing was almost like turning the
>>>ignition switch on and off.
>>>
>>>Does one have to go to a Mazda dealer to see what happened or can any
>>>competent independent shop help me??
>>>
>>>Weird!
>>>
>>>Thanks for any suggestions!!
>>>
>>>Rick
>>>

>
>

  #19  
Old November 12th 05, 06:52 AM
junktin
external usenet poster
 
Posts: n/a
Default Stuttering and check engine light

In my case, (2000 Miata) it would start up from cold, run like it was
firing on three cylinders, I would attempt to drive off (because I was
always caught like this away from home) and after a few minutes of
belching smoke and jerking along with everyone staring at me, it would
clear and run normally for the next several months. Of course the
engine check light would come on but after a few days would go out. The
dealer checked for codes but found nothing. (And recorded nothing, doing
the check at first for free.) After a year or so (and about 3 incidents)
it finally got worse so that the check light stayed on and by this time
the problem had deteriorated until the cat converter had fouled. The
dealer by this time had caught a "random misfire" code as well as the
fouled cat code and suggested it was a failing coil pack (from their
experience.) I was dubious but paid for a new coil pack (because they
had not recorded the problems earlier there was no record so no coverage
by the just-expired warranty). They waited then to make sure it was
fixed before ordering me a new cat converter (covered by the longer
emissions warranty.) No sign of trouble in several months and I am
starting to regain confidence that they were correct and the problem has
been fixed.

Dave



In article >,
Rusty Cadaret > wrote:

> I feel your pain.
>
> I have a 2000 that is behaving the exact same way. Only mine has been
> doing so for 18 months and has completely died and left me stranded 3
> times.
>
> The first time the O2 sensor was replaced. The check engine light came
> back on 3 days later.
>
> The second time the cam shaft positoin sensor was replaced. The check
> engine light came on 3 days later.
>
> The third time was 2 days ago and I am waiting to hear from the
> dealship now. I hold out some hope that whatever it is really broke
> this time becasue for the first time the car did not restart once it
> had cooled down. The other 2 times it did restart once the engine
> cooled down for an hour ro two.
>
> The whole time the engine ran fine, execpt for the 3 times it stranded
> me. The whole time the check engine light was on a mojority of the
> time, but would go off for a day or so once every week or two.
>
> Anybody else?
>
> Rusty
>
>
>
>
> On Wed, 02 Nov 2005 00:41:28 GMT, Rick Morris >
> wrote:
>
> >Alright, here is my two week update.
> >
> >Car is running fine. Check engine light went off the day after this
> >incident. Have driven 100 miles without the slightest problem. I was going
> >to take the car to the dealer to have them check it out until I found out
> >that hooking it up to the computer to see what codes had been stored would
> >run $99. Found out that I could purchase a new OBD-II scanner for the same
> >price and took the leap. It is a cool thing and comes with a CD that you
> >can install on your computer. The CD has the codes, including manufacturer
> >codes. Anyhow, I plugged in the scanner and found the code that was stored
> >in conjunction with the incident was P1345 which according to my nifty
> >computer program is a "Cyl Discrimination Signal Camshaft Position" code.
> >Any ideas of what might have gone on here? I originally thought it was an
> >onboard computer glitch. Hmmmmm?
> >Anyhow, the car is running fine now and the only other action I have taken
> >is to run a bottle of Techron with the last tank of gas.
> >
> >Ideas??
> >
> >Thanks!!!!
> >
> >
> >
> >On 10/16/05 10:18 PM, in article , "Rick
> >Morris" > wrote:
> >
> >> I was driving my 2001 MX-5 (26K, Red) around with my wife looking at the
> >> Fall colors. The car had been stuck in the garage for close to a month as
> >> I
> >> had a pallet of building supplies blocking it's egress. Anyhow, got it
> >> out
> >> an went for a nice drive. About 1/2 hour into our drive the car started
> >> acting like it was out of fuel. Almost like the ignition was being turned
> >> on
> >> an off. I got to a side street and noted that the car could not rev over
> >> 1,500 rpm without intermittently losing power. The check engine light came
> >> on about that time. The car would idle but revving it above 1,500 rpm
> >> again
> >> caused it to cut power on and off. After about 5 minutes of this, the
> >> whole
> >> ting resolved and the car again drove as it always has. However, the check
> >> engine light remains on now. Again, there are no current drivability
> >> issues
> >> but the check engine light is on. Any ideas of what happened?? I hate to
> >> go
> >> to the dealer but I guess I will need to have them look at it. No problems
> >> ever before with the car. I assumed it was an electronic glitch. There
> >> was
> >> no backfiring, but the on-off power thing was almost like turning the
> >> ignition switch on and off.
> >>
> >> Does one have to go to a Mazda dealer to see what happened or can any
> >> competent independent shop help me??
> >>
> >> Weird!
> >>
> >> Thanks for any suggestions!!
> >>
> >> Rick
> >>

 




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