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Next: Where is the fuel pump control module on an 03?
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External
Since: Jun 11, 2008
Posts: 3
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(Msg. 1) Posted: Wed Jun 11, 2008 8:20 am
Post subject: 2K GT single cylinder misfire mystery
Archived from groups: rec>autos>makers>ford>mustang (more info?)
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I had an OBDII code check and it told me that cylinder#5 has been
misfiring. Since I never changed the plugs (after 100K miles), I
changed all 8, and the problem went away for a few weeks. Now, the
same cylinder is misfiring again.
What I also noticed is that when the car is in the garage for more
than a week, the misfiring always happens on first (cold) start. If I
use the car the next day, all is OK.
Should I change the coil as well or the wiring harness (which seems
like a huge pain to do)???
Thanks
Mark
2000 GT 'vert |
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External
Since: Jun 09, 2008
Posts: 12
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(Msg. 2) Posted: Wed Jun 11, 2008 2:34 pm
Post subject: Re: 2K GT single cylinder misfire mystery [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Jun 11, 9:20 am, "Mark G7#9" <mar... RemoveThis @yahoo.com> wrote:
> I had an OBDII code check and it told me that cylinder#5 has been
> misfiring. Since I never changed the plugs (after 100K miles), I
> changed all 8, and the problem went away for a few weeks. Now, the
> same cylinder is misfiring again.
>
> What I also noticed is that when the car is in the garage for more
> than a week, the misfiring always happens on first (cold) start. If I
> use the car the next day, all is OK.
>
> Should I change the coil as well or the wiring harness (which seems
> like a huge pain to do)???
> Thanks
> Mark
> 2000 GT 'vert
Exchange the coil pack with another cylinder and reset the PCM. If the
problem moves it's the coil pack. If it stays on hole number 5 there
it's a different problem. You could then do that same swap with the
injector to eliminate/verify an injector problem.
Dan
2003 Cobra Convertible
With Some Stuff and Things |
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External
Since: Jun 11, 2008
Posts: 3
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(Msg. 3) Posted: Thu Jun 12, 2008 7:18 am
Post subject: Re: 2K GT single cylinder misfire mystery [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Jun 11, 5:34 pm, Dan <dwta... DeleteThis @nuail.com> wrote:
> On Jun 11, 9:20 am, "Mark G7#9" <mar... DeleteThis @yahoo.com> wrote:
>
> > I had an OBDII code check and it told me that cylinder#5 has been
> > misfiring. Since I never changed the plugs (after 100K miles), I
> > changed all 8, and the problem went away for a few weeks. Now, the
> > same cylinder is misfiring again.
>
> > What I also noticed is that when the car is in the garage for more
> > than a week, the misfiring always happens on first (cold) start. If I
> > use the car the next day, all is OK.
>
> > Should I change the coil as well or the wiring harness (which seems
> > like a huge pain to do)???
> > Thanks
> > Mark
> > 2000 GT 'vert
>
> Exchange the coil pack with another cylinder and reset the PCM. If the
> problem moves it's the coil pack. If it stays on hole number 5 there
> it's a different problem. You could then do that same swap with the
> injector to eliminate/verify an injector problem.
>
> Dan
> 2003 Cobra Convertible
> With Some Stuff and Things
Good advice (should of thought of it myself). Not sure how to swap the
imjector though. Isn't it integrated into the fuel rail thingy? >> Stay informed about: 2K GT single cylinder misfire mystery |
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External
Since: Jun 09, 2008
Posts: 12
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(Msg. 4) Posted: Thu Jun 12, 2008 8:12 am
Post subject: Re: 2K GT single cylinder misfire mystery [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Jun 12, 8:18 am, "Mark G7#9" <mar....TakeThisOut@yahoo.com> wrote:
> On Jun 11, 5:34 pm, Dan <dwta....TakeThisOut@nuail.com> wrote:
>
>
>
>
>
> > On Jun 11, 9:20 am, "Mark G7#9" <mar....TakeThisOut@yahoo.com> wrote:
>
> > > I had an OBDII code check and it told me that cylinder#5 has been
> > > misfiring. Since I never changed the plugs (after 100K miles), I
> > > changed all 8, and the problem went away for a few weeks. Now, the
> > > same cylinder is misfiring again.
>
> > > What I also noticed is that when the car is in the garage for more
> > > than a week, the misfiring always happens on first (cold) start. If I
> > > use the car the next day, all is OK.
>
> > > Should I change the coil as well or the wiring harness (which seems
> > > like a huge pain to do)???
> > > Thanks
> > > Mark
> > > 2000 GT 'vert
>
> > Exchange the coil pack with another cylinder and reset the PCM. If the
> > problem moves it's the coil pack. If it stays on hole number 5 there
> > it's a different problem. You could then do that same swap with the
> > injector to eliminate/verify an injector problem.
>
> > Dan
> > 2003 Cobra Convertible
> > With Some Stuff and Things
>
> Good advice (should of thought of it myself). Not sure how to swap the
> imjector though. Isn't it integrated into the fuel rail thingy?- Hide quoted text -
>
> - Show quoted text -
Well, not integrated into as much as attached to  . The inlet side of
the injectors are clipped/mounted to the rail and the rail is bolted
down to the manifold. The oulet side just press fits into the manifold
hole with an O-ring for a seal.
Dan
P49Y+ >> Stay informed about: 2K GT single cylinder misfire mystery |
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External
Since: Jun 11, 2008
Posts: 3
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(Msg. 5) Posted: Thu Jun 12, 2008 11:28 am
Post subject: Re: 2K GT single cylinder misfire mystery [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Jun 12, 11:12 am, Dan <dwta....RemoveThis@nuail.com> wrote:
> On Jun 12, 8:18 am, "Mark G7#9" <mar....RemoveThis@yahoo.com> wrote:
>
>
>
>
>
> > On Jun 11, 5:34 pm, Dan <dwta....RemoveThis@nuail.com> wrote:
>
> > > On Jun 11, 9:20 am, "Mark G7#9" <mar....RemoveThis@yahoo.com> wrote:
>
> > > > I had an OBDII code check and it told me that cylinder#5 has been
> > > > misfiring. Since I never changed the plugs (after 100K miles), I
> > > > changed all 8, and the problem went away for a few weeks. Now, the
> > > > same cylinder is misfiring again.
>
> > > > What I also noticed is that when the car is in the garage for more
> > > > than a week, the misfiring always happens on first (cold) start. If I
> > > > use the car the next day, all is OK.
>
> > > > Should I change the coil as well or the wiring harness (which seems
> > > > like a huge pain to do)???
> > > > Thanks
> > > > Mark
> > > > 2000 GT 'vert
>
> > > Exchange the coil pack with another cylinder and reset the PCM. If the
> > > problem moves it's the coil pack. If it stays on hole number 5 there
> > > it's a different problem. You could then do that same swap with the
> > > injector to eliminate/verify an injector problem.
>
> > > Dan
> > > 2003 Cobra Convertible
> > > With Some Stuff and Things
>
> > Good advice (should of thought of it myself). Not sure how to swap the
> > imjector though. Isn't it integrated into the fuel rail thingy?- Hide quoted text -
>
> > - Show quoted text -
>
> Well, not integrated into as much as attached to . The inlet side of
> the injectors are clipped/mounted to the rail and the rail is bolted
> down to the manifold. The oulet side just press fits into the manifold
> hole with an O-ring for a seal.
>
> Dan
> P49Y+- Hide quoted text -
>
> - Show quoted text -
I'm thinking that the coil may be eliminated as a problem since it
would be bad all the time , not just on cold starts. The injector may
be affected though since over time of long rests, maybe something goes
funny with the mixture. Makes sense? >> Stay informed about: 2K GT single cylinder misfire mystery |
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External
Since: Apr 11, 2008
Posts: 5
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(Msg. 6) Posted: Sun Jun 22, 2008 7:52 pm
Post subject: Re: 2K GT single cylinder misfire mystery [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Mark G7#9" <markg9 DeleteThis @yahoo.com> wrote in message
news:e94284e1-b9b2-449a-bd43-cd1176296c1d@a70g2000hsh.googlegroups.com...
On Jun 11, 5:34 pm, Dan <dwta... DeleteThis @nuail.com> wrote:
> On Jun 11, 9:20 am, "Mark G7#9" <mar... DeleteThis @yahoo.com> wrote:
>
> > I had an OBDII code check and it told me that cylinder#5 has been
> > misfiring. Since I never changed the plugs (after 100K miles), I
> > changed all 8, and the problem went away for a few weeks. Now, the
> > same cylinder is misfiring again.
>
> > What I also noticed is that when the car is in the garage for more
> > than a week, the misfiring always happens on first (cold) start. If I
> > use the car the next day, all is OK.
>
> > Should I change the coil as well or the wiring harness (which seems
> > like a huge pain to do)???
> > Thanks
> > Mark
> > 2000 GT 'vert
>
> Exchange the coil pack with another cylinder and reset the PCM. If the
> problem moves it's the coil pack. If it stays on hole number 5 there
> it's a different problem. You could then do that same swap with the
> injector to eliminate/verify an injector problem.
>
> Dan
> 2003 Cobra Convertible
> With Some Stuff and Things
Good advice (should of thought of it myself). Not sure how to swap the
imjector though. Isn't it integrated into the fuel rail thingy?
Un-freakin'-believable! >> Stay informed about: 2K GT single cylinder misfire mystery |
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