After 60K tune up, my engine misses, doesn't always fire

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Old 09 Aug 2003, 09:12 am   #1 (permalink)
Richard Yeargain
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Default After 60K tune up, my engine misses, doesn't always fire

I had my 60K tuneup and the dealer put in new platinum plugs.
Immediately after leaving the service department, I was sitting at a
traffic light with my foot on the brake when I felt a slight bump. I
noticed that it recurred every 15 to 30 seconds and that the
tachometer would take a little dip each time I felt the small movement
in the car. At higher speeds I can feel the engine "miss" when I
accelerate. I recently pulled a pop-sup for 1000 miles and the
situation was awful. The dealer told me that they could not replicate
this and therefore, they couldn't help me. The service manage said
that the on-board computer would register each time an engine
misfired, and since he could find not error messages, there was
nothing he could do.

I suspect that there is some kind of wiring issue where the mechanic
either failed to properly reconnect all of the wiring (which is
extensive) or that there is a short or an open in one of the wires.
Can anyone help me on this issue? Thanks.
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Old 09 Aug 2003, 09:40 pm   #2 (permalink)
Pookerz
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Default Re: After 60K tune up, my engine misses, doesn't always fire

First of all, it might help if we know what vehicle you're talking about.
Usually people won't take you seriously and think you're trolling if you
don't specify that in your post. Year and model, engine, etc.

Try replacing the plug wires with new ones. It's relatively cheap compared
to having mechanic track things down and might solve the problem. If not,
then hey at least you've got new plug wires.

Dee


"Richard Yeargain" <r.yeargain@comcast.net> wrote in message
news:afa0c9e7.0308090612.121e79c8@posting.google.c om...
> I had my 60K tuneup and the dealer put in new platinum plugs.
> Immediately after leaving the service department, I was sitting at a
> traffic light with my foot on the brake when I felt a slight bump. I
> noticed that it recurred every 15 to 30 seconds and that the
> tachometer would take a little dip each time I felt the small movement
> in the car. At higher speeds I can feel the engine "miss" when I
> accelerate. I recently pulled a pop-sup for 1000 miles and the
> situation was awful. The dealer told me that they could not replicate
> this and therefore, they couldn't help me. The service manage said
> that the on-board computer would register each time an engine
> misfired, and since he could find not error messages, there was
> nothing he could do.
>
> I suspect that there is some kind of wiring issue where the mechanic
> either failed to properly reconnect all of the wiring (which is
> extensive) or that there is a short or an open in one of the wires.
> Can anyone help me on this issue? Thanks.



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Old 09 Aug 2003, 10:01 pm   #3 (permalink)
Pookerz
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Default Re: After 60K tune up, my engine misses, doesn't always fire

Also, there's numerous reasons why an engine would miss, and they're the
same for most vehicles.
Improper plug gap.
Bad plug wires.
Problems with the fuel system and vacuum lines.
etc.
If your dealer can't reproduce the problem, then maybe you should get a
Haynes or Chilton's manual and go through their list of possibilities,
checking things on your own. Even if you have it serviced by the dealer,
having a manual can be handy.
Dee


"Richard Yeargain" <r.yeargain@comcast.net> wrote in message
news:afa0c9e7.0308090612.121e79c8@posting.google.c om...
> I had my 60K tuneup and the dealer put in new platinum plugs.
> Immediately after leaving the service department, I was sitting at a
> traffic light with my foot on the brake when I felt a slight bump. I
> noticed that it recurred every 15 to 30 seconds and that the
> tachometer would take a little dip each time I felt the small movement
> in the car. At higher speeds I can feel the engine "miss" when I
> accelerate. I recently pulled a pop-sup for 1000 miles and the
> situation was awful. The dealer told me that they could not replicate
> this and therefore, they couldn't help me. The service manage said
> that the on-board computer would register each time an engine
> misfired, and since he could find not error messages, there was
> nothing he could do.
>
> I suspect that there is some kind of wiring issue where the mechanic
> either failed to properly reconnect all of the wiring (which is
> extensive) or that there is a short or an open in one of the wires.
> Can anyone help me on this issue? Thanks.



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Old 10 Aug 2003, 01:00 am   #4 (permalink)
NewsGrpUser
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Default Re: After 60K tune up, my engine misses, doesn't always fire

Yet another service blunder, not taking responsibility!

"Pookerz" <pookydee@sbcglobal.net> wrote in message
news:6AiZa.190$4Z6.67@newssvr29.news.prodigy.com.. .
> Also, there's numerous reasons why an engine would miss, and they're the
> same for most vehicles.
> Improper plug gap.
> Bad plug wires.
> Problems with the fuel system and vacuum lines.
> etc.
> If your dealer can't reproduce the problem, then maybe you should get a
> Haynes or Chilton's manual and go through their list of possibilities,
> checking things on your own. Even if you have it serviced by the dealer,
> having a manual can be handy.
> Dee
>
>
> "Richard Yeargain" <r.yeargain@comcast.net> wrote in message
> news:afa0c9e7.0308090612.121e79c8@posting.google.c om...
> > I had my 60K tuneup and the dealer put in new platinum plugs.
> > Immediately after leaving the service department, I was sitting at a
> > traffic light with my foot on the brake when I felt a slight bump. I
> > noticed that it recurred every 15 to 30 seconds and that the
> > tachometer would take a little dip each time I felt the small movement
> > in the car. At higher speeds I can feel the engine "miss" when I
> > accelerate. I recently pulled a pop-sup for 1000 miles and the
> > situation was awful. The dealer told me that they could not replicate
> > this and therefore, they couldn't help me. The service manage said
> > that the on-board computer would register each time an engine
> > misfired, and since he could find not error messages, there was
> > nothing he could do.
> >
> > I suspect that there is some kind of wiring issue where the mechanic
> > either failed to properly reconnect all of the wiring (which is
> > extensive) or that there is a short or an open in one of the wires.
> > Can anyone help me on this issue? Thanks.

>
>



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Old 10 Aug 2003, 11:49 am   #5 (permalink)
D F Bonnett
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Default Re: After 60K tune up, my engine misses, doesn't always fire

On 9 Aug 2003 07:12:36 -0700, r.yeargain@comcast.net (Richard
Yeargain) wrote:

>I had my 60K tuneup and the dealer put in new platinum plugs.
>Immediately after leaving the service department, I was sitting at a
>traffic light with my foot on the brake when I felt a slight bump. I
>noticed that it recurred every 15 to 30 seconds and that the
>tachometer would take a little dip each time I felt the small movement
>in the car. At higher speeds I can feel the engine "miss" when I
>accelerate. I recently pulled a pop-sup for 1000 miles and the
>situation was awful. The dealer told me that they could not replicate
>this and therefore, they couldn't help me. The service manage said
>that the on-board computer would register each time an engine
>misfired, and since he could find not error messages, there was
>nothing he could do.
>
>I suspect that there is some kind of wiring issue where the mechanic
>either failed to properly reconnect all of the wiring (which is
>extensive) or that there is a short or an open in one of the wires.
>Can anyone help me on this issue? Thanks.


One or more of the plug wires may have been damaged in removing them
to change the plugs. Try checking under the hood in the dark. Look for
any arcing along the plug wires. Take a spray bottle with water and
mist the plug wires. That will sometimes help reveal a problem. Plug
wires will usually go past 60K but at this point they may be due. The
fact that it happened right after a plug change makes the wires
suspect. Like Pookerz said, even if you change the wires and don't fix
the problem, at least you will have new wires and you would have had
to do them soon anyway.
FWIW
DFB
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Old 11 Aug 2003, 01:14 pm   #6 (permalink)
Philip®
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Default Re: After 60K tune up, my engine misses, doesn't always fire

Chuck, obviously your time is worth nothing and you did not factor in
operating overhead expenses.
--

~~Philip

cantankerous | kan-TANG-kruss | adjective: difficult or irritating to
deal with.

Example: Philip was always cantankerous in the morning, given to
snapping
and snarling until he'd had his first cup of coffee and a soothing
hot shower.


Chuck wrote:
> I'd rather get the haynes, or chilton manual and figure it out
> myself. My biggest gripe was $200+ for front disc brake job. Did
> it myself for $50. Pads were $31 and the Haynes manual was $15 +
> tax.



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