Help with rough idle and acceleration - TIA
#91
Guest
Posts: n/a
Re: Help with rough idle and acceleration - TIA
We are not talking about a "regular" coil.
In message <4328FEDE.34158107@***.net>, "L.W." wrote:
> An experiment would be to hook two spark plugs to a regular coil,
>and you find only one will fire.
> God Bless America, Bill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>bllsht wrote:
>>
>> I can't speak on the picture you posted, but what is used on the current 4.0L is
>> ONE coil firing TWO plugs simultaneously in OPPOSITE polarity.
>>
>> If one coil doesn't work, 2 plugs don't get spark.
In message <4328FEDE.34158107@***.net>, "L.W." wrote:
> An experiment would be to hook two spark plugs to a regular coil,
>and you find only one will fire.
> God Bless America, Bill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>bllsht wrote:
>>
>> I can't speak on the picture you posted, but what is used on the current 4.0L is
>> ONE coil firing TWO plugs simultaneously in OPPOSITE polarity.
>>
>> If one coil doesn't work, 2 plugs don't get spark.
#92
Guest
Posts: n/a
Re: Help with rough idle and acceleration - TIA
We are not talking about a "regular" coil.
In message <4328FEDE.34158107@***.net>, "L.W." wrote:
> An experiment would be to hook two spark plugs to a regular coil,
>and you find only one will fire.
> God Bless America, Bill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>bllsht wrote:
>>
>> I can't speak on the picture you posted, but what is used on the current 4.0L is
>> ONE coil firing TWO plugs simultaneously in OPPOSITE polarity.
>>
>> If one coil doesn't work, 2 plugs don't get spark.
In message <4328FEDE.34158107@***.net>, "L.W." wrote:
> An experiment would be to hook two spark plugs to a regular coil,
>and you find only one will fire.
> God Bless America, Bill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>bllsht wrote:
>>
>> I can't speak on the picture you posted, but what is used on the current 4.0L is
>> ONE coil firing TWO plugs simultaneously in OPPOSITE polarity.
>>
>> If one coil doesn't work, 2 plugs don't get spark.
#93
Guest
Posts: n/a
Re: Help with rough idle and acceleration - TIA
Yes, but it proves there must be two coils within the one module,
having two primaries and secondaries in order to fire two plugs, with
one hot wire in parallel.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
bllsht wrote:
>
> We are not talking about a "regular" coil.
having two primaries and secondaries in order to fire two plugs, with
one hot wire in parallel.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
bllsht wrote:
>
> We are not talking about a "regular" coil.
#94
Guest
Posts: n/a
Re: Help with rough idle and acceleration - TIA
Yes, but it proves there must be two coils within the one module,
having two primaries and secondaries in order to fire two plugs, with
one hot wire in parallel.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
bllsht wrote:
>
> We are not talking about a "regular" coil.
having two primaries and secondaries in order to fire two plugs, with
one hot wire in parallel.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
bllsht wrote:
>
> We are not talking about a "regular" coil.
#95
Guest
Posts: n/a
Re: Help with rough idle and acceleration - TIA
Yes, but it proves there must be two coils within the one module,
having two primaries and secondaries in order to fire two plugs, with
one hot wire in parallel.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
bllsht wrote:
>
> We are not talking about a "regular" coil.
having two primaries and secondaries in order to fire two plugs, with
one hot wire in parallel.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
bllsht wrote:
>
> We are not talking about a "regular" coil.
#96
Guest
Posts: n/a
Re: Help with rough idle and acceleration - TIA
For What it's Worth
WJ Ignition System Description and Operation pages D2 & D3
IGNITION COIL—4.0L ENGINE
DESCRIPTION
A one-piece coil rail assembly containing three
individual coils is used on the 4.0L 6–cylinder engine
(Fig. 1). The coil rail must be replaced as one assembly.
The bottom of the coil is equipped with 6 individual
rubber boots (Fig. 1) to seal the 6 spark plugs to
the coil. Inside each rubber boot is a spring. The
spring is used for a mechanical contact between the
coil and the top of the spark plug. These rubber boots
and springs are a permanent part of the coil and are
not serviced separately.
(1) The coil is bolted directly to the cylinder head
(Fig. 2). One electrical connector (located at rear of
coil) is used for all three coils.
OPERATION
Although cylinder firing order is the same as 4.0L
Jeep engines of previous years, spark plug firing is
not. The 3 coils dual-fire the spark plugs on cylinders
1–6, 2–5 and/or 3–4. When one cylinder is being fired
(on compression stroke), the spark to the opposite
cylinder is being wasted (on exhaust stroke).
Battery voltage is supplied to the three ignition
coils from the ASD relay. The Powertrain Control
Module (PCM) opens and closes the ignition coil
ground circuit for ignition coil operation.
Base ignition timing is not adjustable. By controlling
the coil ground circuit, the PCM is able to set
the base timing and adjust the ignition timing
advance. This is done to meet changing engine operating
conditions.
The ignition coil is not oil filled. The windings are
embedded in an epoxy compound. This provides heat
and vibration resistance that allows the ignition coil
to be mounted on the engine.
Because of coil design, spark plug cables (secondary
cables) are not used. The cables are integral
within the coil rail.
--
..
Billy_Ray@SPAM.fuse.net (remove SPAM)
2002 Jeep WJ 4 Liter Automatic
Brilliant Black Crystal Pearl Coat
Sharing is why we are all here....... or should be.
..
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:4329159A.157B68E2@***.net...
> Yes, but it proves there must be two coils within the one module,
> having two primaries and secondaries in order to fire two plugs, with
> one hot wire in parallel.
> God Bless America, Bill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> bllsht wrote:
>>
>> We are not talking about a "regular" coil.
WJ Ignition System Description and Operation pages D2 & D3
IGNITION COIL—4.0L ENGINE
DESCRIPTION
A one-piece coil rail assembly containing three
individual coils is used on the 4.0L 6–cylinder engine
(Fig. 1). The coil rail must be replaced as one assembly.
The bottom of the coil is equipped with 6 individual
rubber boots (Fig. 1) to seal the 6 spark plugs to
the coil. Inside each rubber boot is a spring. The
spring is used for a mechanical contact between the
coil and the top of the spark plug. These rubber boots
and springs are a permanent part of the coil and are
not serviced separately.
(1) The coil is bolted directly to the cylinder head
(Fig. 2). One electrical connector (located at rear of
coil) is used for all three coils.
OPERATION
Although cylinder firing order is the same as 4.0L
Jeep engines of previous years, spark plug firing is
not. The 3 coils dual-fire the spark plugs on cylinders
1–6, 2–5 and/or 3–4. When one cylinder is being fired
(on compression stroke), the spark to the opposite
cylinder is being wasted (on exhaust stroke).
Battery voltage is supplied to the three ignition
coils from the ASD relay. The Powertrain Control
Module (PCM) opens and closes the ignition coil
ground circuit for ignition coil operation.
Base ignition timing is not adjustable. By controlling
the coil ground circuit, the PCM is able to set
the base timing and adjust the ignition timing
advance. This is done to meet changing engine operating
conditions.
The ignition coil is not oil filled. The windings are
embedded in an epoxy compound. This provides heat
and vibration resistance that allows the ignition coil
to be mounted on the engine.
Because of coil design, spark plug cables (secondary
cables) are not used. The cables are integral
within the coil rail.
--
..
Billy_Ray@SPAM.fuse.net (remove SPAM)
2002 Jeep WJ 4 Liter Automatic
Brilliant Black Crystal Pearl Coat
Sharing is why we are all here....... or should be.
..
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:4329159A.157B68E2@***.net...
> Yes, but it proves there must be two coils within the one module,
> having two primaries and secondaries in order to fire two plugs, with
> one hot wire in parallel.
> God Bless America, Bill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> bllsht wrote:
>>
>> We are not talking about a "regular" coil.
#97
Guest
Posts: n/a
Re: Help with rough idle and acceleration - TIA
For What it's Worth
WJ Ignition System Description and Operation pages D2 & D3
IGNITION COIL—4.0L ENGINE
DESCRIPTION
A one-piece coil rail assembly containing three
individual coils is used on the 4.0L 6–cylinder engine
(Fig. 1). The coil rail must be replaced as one assembly.
The bottom of the coil is equipped with 6 individual
rubber boots (Fig. 1) to seal the 6 spark plugs to
the coil. Inside each rubber boot is a spring. The
spring is used for a mechanical contact between the
coil and the top of the spark plug. These rubber boots
and springs are a permanent part of the coil and are
not serviced separately.
(1) The coil is bolted directly to the cylinder head
(Fig. 2). One electrical connector (located at rear of
coil) is used for all three coils.
OPERATION
Although cylinder firing order is the same as 4.0L
Jeep engines of previous years, spark plug firing is
not. The 3 coils dual-fire the spark plugs on cylinders
1–6, 2–5 and/or 3–4. When one cylinder is being fired
(on compression stroke), the spark to the opposite
cylinder is being wasted (on exhaust stroke).
Battery voltage is supplied to the three ignition
coils from the ASD relay. The Powertrain Control
Module (PCM) opens and closes the ignition coil
ground circuit for ignition coil operation.
Base ignition timing is not adjustable. By controlling
the coil ground circuit, the PCM is able to set
the base timing and adjust the ignition timing
advance. This is done to meet changing engine operating
conditions.
The ignition coil is not oil filled. The windings are
embedded in an epoxy compound. This provides heat
and vibration resistance that allows the ignition coil
to be mounted on the engine.
Because of coil design, spark plug cables (secondary
cables) are not used. The cables are integral
within the coil rail.
--
..
Billy_Ray@SPAM.fuse.net (remove SPAM)
2002 Jeep WJ 4 Liter Automatic
Brilliant Black Crystal Pearl Coat
Sharing is why we are all here....... or should be.
..
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:4329159A.157B68E2@***.net...
> Yes, but it proves there must be two coils within the one module,
> having two primaries and secondaries in order to fire two plugs, with
> one hot wire in parallel.
> God Bless America, Bill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> bllsht wrote:
>>
>> We are not talking about a "regular" coil.
WJ Ignition System Description and Operation pages D2 & D3
IGNITION COIL—4.0L ENGINE
DESCRIPTION
A one-piece coil rail assembly containing three
individual coils is used on the 4.0L 6–cylinder engine
(Fig. 1). The coil rail must be replaced as one assembly.
The bottom of the coil is equipped with 6 individual
rubber boots (Fig. 1) to seal the 6 spark plugs to
the coil. Inside each rubber boot is a spring. The
spring is used for a mechanical contact between the
coil and the top of the spark plug. These rubber boots
and springs are a permanent part of the coil and are
not serviced separately.
(1) The coil is bolted directly to the cylinder head
(Fig. 2). One electrical connector (located at rear of
coil) is used for all three coils.
OPERATION
Although cylinder firing order is the same as 4.0L
Jeep engines of previous years, spark plug firing is
not. The 3 coils dual-fire the spark plugs on cylinders
1–6, 2–5 and/or 3–4. When one cylinder is being fired
(on compression stroke), the spark to the opposite
cylinder is being wasted (on exhaust stroke).
Battery voltage is supplied to the three ignition
coils from the ASD relay. The Powertrain Control
Module (PCM) opens and closes the ignition coil
ground circuit for ignition coil operation.
Base ignition timing is not adjustable. By controlling
the coil ground circuit, the PCM is able to set
the base timing and adjust the ignition timing
advance. This is done to meet changing engine operating
conditions.
The ignition coil is not oil filled. The windings are
embedded in an epoxy compound. This provides heat
and vibration resistance that allows the ignition coil
to be mounted on the engine.
Because of coil design, spark plug cables (secondary
cables) are not used. The cables are integral
within the coil rail.
--
..
Billy_Ray@SPAM.fuse.net (remove SPAM)
2002 Jeep WJ 4 Liter Automatic
Brilliant Black Crystal Pearl Coat
Sharing is why we are all here....... or should be.
..
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:4329159A.157B68E2@***.net...
> Yes, but it proves there must be two coils within the one module,
> having two primaries and secondaries in order to fire two plugs, with
> one hot wire in parallel.
> God Bless America, Bill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> bllsht wrote:
>>
>> We are not talking about a "regular" coil.
#98
Guest
Posts: n/a
Re: Help with rough idle and acceleration - TIA
For What it's Worth
WJ Ignition System Description and Operation pages D2 & D3
IGNITION COIL—4.0L ENGINE
DESCRIPTION
A one-piece coil rail assembly containing three
individual coils is used on the 4.0L 6–cylinder engine
(Fig. 1). The coil rail must be replaced as one assembly.
The bottom of the coil is equipped with 6 individual
rubber boots (Fig. 1) to seal the 6 spark plugs to
the coil. Inside each rubber boot is a spring. The
spring is used for a mechanical contact between the
coil and the top of the spark plug. These rubber boots
and springs are a permanent part of the coil and are
not serviced separately.
(1) The coil is bolted directly to the cylinder head
(Fig. 2). One electrical connector (located at rear of
coil) is used for all three coils.
OPERATION
Although cylinder firing order is the same as 4.0L
Jeep engines of previous years, spark plug firing is
not. The 3 coils dual-fire the spark plugs on cylinders
1–6, 2–5 and/or 3–4. When one cylinder is being fired
(on compression stroke), the spark to the opposite
cylinder is being wasted (on exhaust stroke).
Battery voltage is supplied to the three ignition
coils from the ASD relay. The Powertrain Control
Module (PCM) opens and closes the ignition coil
ground circuit for ignition coil operation.
Base ignition timing is not adjustable. By controlling
the coil ground circuit, the PCM is able to set
the base timing and adjust the ignition timing
advance. This is done to meet changing engine operating
conditions.
The ignition coil is not oil filled. The windings are
embedded in an epoxy compound. This provides heat
and vibration resistance that allows the ignition coil
to be mounted on the engine.
Because of coil design, spark plug cables (secondary
cables) are not used. The cables are integral
within the coil rail.
--
..
Billy_Ray@SPAM.fuse.net (remove SPAM)
2002 Jeep WJ 4 Liter Automatic
Brilliant Black Crystal Pearl Coat
Sharing is why we are all here....... or should be.
..
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:4329159A.157B68E2@***.net...
> Yes, but it proves there must be two coils within the one module,
> having two primaries and secondaries in order to fire two plugs, with
> one hot wire in parallel.
> God Bless America, Bill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> bllsht wrote:
>>
>> We are not talking about a "regular" coil.
WJ Ignition System Description and Operation pages D2 & D3
IGNITION COIL—4.0L ENGINE
DESCRIPTION
A one-piece coil rail assembly containing three
individual coils is used on the 4.0L 6–cylinder engine
(Fig. 1). The coil rail must be replaced as one assembly.
The bottom of the coil is equipped with 6 individual
rubber boots (Fig. 1) to seal the 6 spark plugs to
the coil. Inside each rubber boot is a spring. The
spring is used for a mechanical contact between the
coil and the top of the spark plug. These rubber boots
and springs are a permanent part of the coil and are
not serviced separately.
(1) The coil is bolted directly to the cylinder head
(Fig. 2). One electrical connector (located at rear of
coil) is used for all three coils.
OPERATION
Although cylinder firing order is the same as 4.0L
Jeep engines of previous years, spark plug firing is
not. The 3 coils dual-fire the spark plugs on cylinders
1–6, 2–5 and/or 3–4. When one cylinder is being fired
(on compression stroke), the spark to the opposite
cylinder is being wasted (on exhaust stroke).
Battery voltage is supplied to the three ignition
coils from the ASD relay. The Powertrain Control
Module (PCM) opens and closes the ignition coil
ground circuit for ignition coil operation.
Base ignition timing is not adjustable. By controlling
the coil ground circuit, the PCM is able to set
the base timing and adjust the ignition timing
advance. This is done to meet changing engine operating
conditions.
The ignition coil is not oil filled. The windings are
embedded in an epoxy compound. This provides heat
and vibration resistance that allows the ignition coil
to be mounted on the engine.
Because of coil design, spark plug cables (secondary
cables) are not used. The cables are integral
within the coil rail.
--
..
Billy_Ray@SPAM.fuse.net (remove SPAM)
2002 Jeep WJ 4 Liter Automatic
Brilliant Black Crystal Pearl Coat
Sharing is why we are all here....... or should be.
..
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:4329159A.157B68E2@***.net...
> Yes, but it proves there must be two coils within the one module,
> having two primaries and secondaries in order to fire two plugs, with
> one hot wire in parallel.
> God Bless America, Bill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> bllsht wrote:
>>
>> We are not talking about a "regular" coil.
#99
Guest
Posts: n/a
Re: Help with rough idle and acceleration - TIA
One coil. Two spark plugs. Both spark plugs fire EVERY crankshaft revolution
simultaneously. One spark plug always fires negatively (from center electrode
to ground electrode). The other spark plug always fires positively (from ground
electrode to center electrode).
Does that sound "parallel" to you?
You always have a link for everything, yet I haven't seen any links from you on
this subject yet. Having trouble finding one that agrees with you?
In message <4329159A.157B68E2@***.net>, "L.W." wrote:
> Yes, but it proves there must be two coils within the one module,
>having two primaries and secondaries in order to fire two plugs, with
>one hot wire in parallel.
> God Bless America, Bill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>bllsht wrote:
>>
>> We are not talking about a "regular" coil.
simultaneously. One spark plug always fires negatively (from center electrode
to ground electrode). The other spark plug always fires positively (from ground
electrode to center electrode).
Does that sound "parallel" to you?
You always have a link for everything, yet I haven't seen any links from you on
this subject yet. Having trouble finding one that agrees with you?
In message <4329159A.157B68E2@***.net>, "L.W." wrote:
> Yes, but it proves there must be two coils within the one module,
>having two primaries and secondaries in order to fire two plugs, with
>one hot wire in parallel.
> God Bless America, Bill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>bllsht wrote:
>>
>> We are not talking about a "regular" coil.
#100
Guest
Posts: n/a
Re: Help with rough idle and acceleration - TIA
One coil. Two spark plugs. Both spark plugs fire EVERY crankshaft revolution
simultaneously. One spark plug always fires negatively (from center electrode
to ground electrode). The other spark plug always fires positively (from ground
electrode to center electrode).
Does that sound "parallel" to you?
You always have a link for everything, yet I haven't seen any links from you on
this subject yet. Having trouble finding one that agrees with you?
In message <4329159A.157B68E2@***.net>, "L.W." wrote:
> Yes, but it proves there must be two coils within the one module,
>having two primaries and secondaries in order to fire two plugs, with
>one hot wire in parallel.
> God Bless America, Bill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>bllsht wrote:
>>
>> We are not talking about a "regular" coil.
simultaneously. One spark plug always fires negatively (from center electrode
to ground electrode). The other spark plug always fires positively (from ground
electrode to center electrode).
Does that sound "parallel" to you?
You always have a link for everything, yet I haven't seen any links from you on
this subject yet. Having trouble finding one that agrees with you?
In message <4329159A.157B68E2@***.net>, "L.W." wrote:
> Yes, but it proves there must be two coils within the one module,
>having two primaries and secondaries in order to fire two plugs, with
>one hot wire in parallel.
> God Bless America, Bill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>bllsht wrote:
>>
>> We are not talking about a "regular" coil.