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Autos - Cars > Pontiac > Re: 3.8 coilpac...
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Re: 3.8 coilpacks

by dye@[EMAIL PROTECTED] (dye) Mar 5, 2008 at 10:34 AM

In article <ji9nr3132ug49l6l5aoffcml9s1g26rdp1@[EMAIL PROTECTED]
>,
 <clarence at snyder dot on dot ca> wrote:
>Got called back to the office this afternoon because a computer was
>rebooting. The 1994 Trans S****t 3.8 ran beautifully. I shut ijt off,
>and when I came out half an hour later and restarted it I smelled raw
>gas from the now cold exhaust, and the engine had a pronounced miss.
>
>I limped it home and disconnected injectors one at a time ntill I
>found #3 made no difference. I shut it off and pulled #3 plug wire.
>When I cranked it over there was no spark.
>I pulled the wire from the coil. Still no spark. I pulled #6 from the
>coil (opposite connection) and it had LOTS of fire.
>I pulled the coilpack and replaced it - lots of fire, but the engine

I've had these fail, but never like this.  Each coil pack fires two
plugs at once (one at the top of the compression stroke, firing
the cylinder, and the other at the top of the exhaust stroke, doing
nothing).  A coil pack failure turns the V6 into an odd firing
V4 really quick.

>still missed. Spark tester showed the second (middle) coil pack was
>producing a weaker than normal spark - so I replaced it too, and the
>engine now runs as sweet as ever.
>
>Any idea what would cause 2 coils to "go south" all at once?
>The other coil pack was replaced something like 5 years and 90,000 km
>ago. (thruck has over 365,000km on it now)

The first one sounds like an electrical breakage, the second
one normal (for 350Kkm!) wear and tear...


--Ken

-- 
Ken R. Dye                               an optimist is a guy            
|
Chicago, Illinois                        that has never had              
|
www.geocities.com/MotorCity/Track/8746   much experience                 
|
dye1146 at sbcglobal dot net                                 archy       
|
 




 6 Posts in Topic:
3.8 coilpacks
clare at snyder.on.ca   2008-02-19 23:08:27 
Re: 3.8 coilpacks
=?iso-8859-15?Q?Bon=B7ne=  2008-02-19 23:26:38 
Re: 3.8 coilpacks
clare at snyder.on.ca   2008-02-20 20:52:12 
Re: 3.8 coilpacks
=?iso-8859-15?Q?Bon=B7ne=  2008-02-21 12:47:57 
Re: 3.8 coilpacks
"JHG" <jhg@[  2008-02-19 21:16:42 
Re: 3.8 coilpacks
dye@[EMAIL PROTECTED] (d  2008-03-05 10:34:57 

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tan12V112 Mon Oct 13 15:57:01 CDT 2008.