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Jeff Strickland 06-27-2005 07:52 PM

Troubles with OBD II - HURRY
 
I am having a code P0302 from the OBD II system, this means that there is
trouble with the #2 plug. The car runs like it is miss firing, it kind of
pops and sputters like a valve.

Trusting OBD II as I do, I tested the plug wires, and the #2 wire seems to
be open. The #1, 3, and 4 have resistance readings as follows, 10.0, 7.6,
and 5.5 k ohms respectively. If the resistance is a function of the length
and the #1 is double the length of #4, then the resistance readings are in
line. I would expect #2 to fall in between 1 & 3, or about 9.

Before I go out and buy new wires, is my test valid?



Coasty 06-27-2005 07:56 PM

Re: Troubles with OBD II - HURRY
 
If you are reading a straight open that is all you need regardless of what a
particular resistance reading is on other wires. Could it be just a plug,
change the plugs.

--
Coasty
SEMPAR PARATUS
(ALWAYS READY)

Remove The SPOOGE To Reply
"Jeff Strickland" <crwlr@yahoo.com> wrote in message
news:g_-dneOfd5_UDF3fRVn-gA@ez2.net...
>I am having a code P0302 from the OBD II system, this means that there is
>trouble with the #2 plug. The car runs like it is miss firing, it kind of
>pops and sputters like a valve.
>
> Trusting OBD II as I do, I tested the plug wires, and the #2 wire seems to
> be open. The #1, 3, and 4 have resistance readings as follows, 10.0, 7.6,
> and 5.5 k ohms respectively. If the resistance is a function of the length
> and the #1 is double the length of #4, then the resistance readings are in
> line. I would expect #2 to fall in between 1 & 3, or about 9.
>
> Before I go out and buy new wires, is my test valid?
>
>




Coasty 06-27-2005 07:56 PM

Re: Troubles with OBD II - HURRY
 
If you are reading a straight open that is all you need regardless of what a
particular resistance reading is on other wires. Could it be just a plug,
change the plugs.

--
Coasty
SEMPAR PARATUS
(ALWAYS READY)

Remove The SPOOGE To Reply
"Jeff Strickland" <crwlr@yahoo.com> wrote in message
news:g_-dneOfd5_UDF3fRVn-gA@ez2.net...
>I am having a code P0302 from the OBD II system, this means that there is
>trouble with the #2 plug. The car runs like it is miss firing, it kind of
>pops and sputters like a valve.
>
> Trusting OBD II as I do, I tested the plug wires, and the #2 wire seems to
> be open. The #1, 3, and 4 have resistance readings as follows, 10.0, 7.6,
> and 5.5 k ohms respectively. If the resistance is a function of the length
> and the #1 is double the length of #4, then the resistance readings are in
> line. I would expect #2 to fall in between 1 & 3, or about 9.
>
> Before I go out and buy new wires, is my test valid?
>
>




Coasty 06-27-2005 07:56 PM

Re: Troubles with OBD II - HURRY
 
If you are reading a straight open that is all you need regardless of what a
particular resistance reading is on other wires. Could it be just a plug,
change the plugs.

--
Coasty
SEMPAR PARATUS
(ALWAYS READY)

Remove The SPOOGE To Reply
"Jeff Strickland" <crwlr@yahoo.com> wrote in message
news:g_-dneOfd5_UDF3fRVn-gA@ez2.net...
>I am having a code P0302 from the OBD II system, this means that there is
>trouble with the #2 plug. The car runs like it is miss firing, it kind of
>pops and sputters like a valve.
>
> Trusting OBD II as I do, I tested the plug wires, and the #2 wire seems to
> be open. The #1, 3, and 4 have resistance readings as follows, 10.0, 7.6,
> and 5.5 k ohms respectively. If the resistance is a function of the length
> and the #1 is double the length of #4, then the resistance readings are in
> line. I would expect #2 to fall in between 1 & 3, or about 9.
>
> Before I go out and buy new wires, is my test valid?
>
>




Coasty 06-27-2005 07:56 PM

Re: Troubles with OBD II - HURRY
 
If you are reading a straight open that is all you need regardless of what a
particular resistance reading is on other wires. Could it be just a plug,
change the plugs.

--
Coasty
SEMPAR PARATUS
(ALWAYS READY)

Remove The SPOOGE To Reply
"Jeff Strickland" <crwlr@yahoo.com> wrote in message
news:g_-dneOfd5_UDF3fRVn-gA@ez2.net...
>I am having a code P0302 from the OBD II system, this means that there is
>trouble with the #2 plug. The car runs like it is miss firing, it kind of
>pops and sputters like a valve.
>
> Trusting OBD II as I do, I tested the plug wires, and the #2 wire seems to
> be open. The #1, 3, and 4 have resistance readings as follows, 10.0, 7.6,
> and 5.5 k ohms respectively. If the resistance is a function of the length
> and the #1 is double the length of #4, then the resistance readings are in
> line. I would expect #2 to fall in between 1 & 3, or about 9.
>
> Before I go out and buy new wires, is my test valid?
>
>




Jerry Bransford 06-27-2005 08:01 PM

Re: Troubles with OBD II - HURRY
 
Your test is fine Jeff, I'd suspect a connector has come off where it
connects to the carbon fiber conductor. I'd install another set of OE
plug wires, most wires sold by Autozone etc. are pretty crappy quality.
Especially avoid those advertising "low resistance" which will
introduce electrical noise into your CB and AM radio.

Jerry

Jeff Strickland wrote:
> I am having a code P0302 from the OBD II system, this means that there
> is trouble with the #2 plug. The car runs like it is miss firing, it
> kind of pops and sputters like a valve.
>
> Trusting OBD II as I do, I tested the plug wires, and the #2 wire seems
> to be open. The #1, 3, and 4 have resistance readings as follows, 10.0,
> 7.6, and 5.5 k ohms respectively. If the resistance is a function of the
> length and the #1 is double the length of #4, then the resistance
> readings are in line. I would expect #2 to fall in between 1 & 3, or
> about 9.
>
> Before I go out and buy new wires, is my test valid?
>
>


--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/

Jerry Bransford 06-27-2005 08:01 PM

Re: Troubles with OBD II - HURRY
 
Your test is fine Jeff, I'd suspect a connector has come off where it
connects to the carbon fiber conductor. I'd install another set of OE
plug wires, most wires sold by Autozone etc. are pretty crappy quality.
Especially avoid those advertising "low resistance" which will
introduce electrical noise into your CB and AM radio.

Jerry

Jeff Strickland wrote:
> I am having a code P0302 from the OBD II system, this means that there
> is trouble with the #2 plug. The car runs like it is miss firing, it
> kind of pops and sputters like a valve.
>
> Trusting OBD II as I do, I tested the plug wires, and the #2 wire seems
> to be open. The #1, 3, and 4 have resistance readings as follows, 10.0,
> 7.6, and 5.5 k ohms respectively. If the resistance is a function of the
> length and the #1 is double the length of #4, then the resistance
> readings are in line. I would expect #2 to fall in between 1 & 3, or
> about 9.
>
> Before I go out and buy new wires, is my test valid?
>
>


--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/

Jerry Bransford 06-27-2005 08:01 PM

Re: Troubles with OBD II - HURRY
 
Your test is fine Jeff, I'd suspect a connector has come off where it
connects to the carbon fiber conductor. I'd install another set of OE
plug wires, most wires sold by Autozone etc. are pretty crappy quality.
Especially avoid those advertising "low resistance" which will
introduce electrical noise into your CB and AM radio.

Jerry

Jeff Strickland wrote:
> I am having a code P0302 from the OBD II system, this means that there
> is trouble with the #2 plug. The car runs like it is miss firing, it
> kind of pops and sputters like a valve.
>
> Trusting OBD II as I do, I tested the plug wires, and the #2 wire seems
> to be open. The #1, 3, and 4 have resistance readings as follows, 10.0,
> 7.6, and 5.5 k ohms respectively. If the resistance is a function of the
> length and the #1 is double the length of #4, then the resistance
> readings are in line. I would expect #2 to fall in between 1 & 3, or
> about 9.
>
> Before I go out and buy new wires, is my test valid?
>
>


--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/

Jerry Bransford 06-27-2005 08:01 PM

Re: Troubles with OBD II - HURRY
 
Your test is fine Jeff, I'd suspect a connector has come off where it
connects to the carbon fiber conductor. I'd install another set of OE
plug wires, most wires sold by Autozone etc. are pretty crappy quality.
Especially avoid those advertising "low resistance" which will
introduce electrical noise into your CB and AM radio.

Jerry

Jeff Strickland wrote:
> I am having a code P0302 from the OBD II system, this means that there
> is trouble with the #2 plug. The car runs like it is miss firing, it
> kind of pops and sputters like a valve.
>
> Trusting OBD II as I do, I tested the plug wires, and the #2 wire seems
> to be open. The #1, 3, and 4 have resistance readings as follows, 10.0,
> 7.6, and 5.5 k ohms respectively. If the resistance is a function of the
> length and the #1 is double the length of #4, then the resistance
> readings are in line. I would expect #2 to fall in between 1 & 3, or
> about 9.
>
> Before I go out and buy new wires, is my test valid?
>
>


--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/

Jeff Strickland 06-27-2005 08:04 PM

Re: Troubles with OBD II - HURRY
 
Plugs are OK, I think. My brother in law replaced them two weeks ago because
the engine was miss firing. The boneheads at AutoZone told him that if the
Check light was off, there were no codes to gather, so we couldn't see if we
were even working on the right stuff.

I'm off to the store to get a new set of wires. This is one of those
projects where the expensive ones are the right ones, isn't it?





"Coasty" <uscg_retSPOOGE@comcast.net> wrote in message
news:gYidnQauqrjdD13fRVn-ug@comcast.com...
> If you are reading a straight open that is all you need regardless of what
> a particular resistance reading is on other wires. Could it be just a
> plug, change the plugs.
>
> --
> Coasty
> SEMPAR PARATUS
> (ALWAYS READY)
>
> Remove The SPOOGE To Reply
> "Jeff Strickland" <crwlr@yahoo.com> wrote in message
> news:g_-dneOfd5_UDF3fRVn-gA@ez2.net...
>>I am having a code P0302 from the OBD II system, this means that there is
>>trouble with the #2 plug. The car runs like it is miss firing, it kind of
>>pops and sputters like a valve.
>>
>> Trusting OBD II as I do, I tested the plug wires, and the #2 wire seems
>> to be open. The #1, 3, and 4 have resistance readings as follows, 10.0,
>> 7.6, and 5.5 k ohms respectively. If the resistance is a function of the
>> length and the #1 is double the length of #4, then the resistance
>> readings are in line. I would expect #2 to fall in between 1 & 3, or
>> about 9.
>>
>> Before I go out and buy new wires, is my test valid?
>>
>>

>
>




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