A Cars forum. AutoBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » AutoBanter forum » Auto makers » Jeep
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

95 Wrangler O2 Sensor Wiring HELP!



 
 
Thread Tools Display Modes
  #11  
Old March 2nd 05, 06:35 AM
JMH
external usenet poster
 
Posts: n/a
Default

L.W.(ßill) Hughes III > wrote in
:

I've looked into this a good bit at this point. I'm going to get a service
manual, it should have the page I need like stated below.

I've looked at everything I can get my hand on, including the schematics of
Bosch sensors and have seen nothing mentioned about air. Not sure what
that even means myself :-)

Thanks for the info!
Jay


> That's hard for me to believe, the sensor's wires have to be
> spliced for the cheapies: http://www.billhughes.com/95YJo2sensor.jpg
> God Bless America, ßill O|||||||O
>
> mic canic wrote:
>>
>> please keep in mind the wiring on the sensor side of the connector
>> carries a very small fraction of air to the sensor so it will work if
>> you cut the wires and the sensor doesn't get the air and the check
>> engine lite will come on a factory wiring schematic with the
>> connector views is what you need

>


Ads
  #12  
Old March 2nd 05, 10:58 AM
Old Crow
external usenet poster
 
Posts: n/a
Default

On Tue, 01 Mar 2005 23:35:57 -0600, JMH > wrote:

>L.W.(ßill) Hughes III > wrote in
:
>
>I've looked into this a good bit at this point. I'm going to get a service
>manual, it should have the page I need like stated below.
>
>I've looked at everything I can get my hand on, including the schematics of
>Bosch sensors and have seen nothing mentioned about air. Not sure what
>that even means myself :-)
>


He's right about the air charge. Not sure of the exact usage, and
couldn't find it in the service manual(note time of post<g>), but the
wires to the sensor *do* indeed carry oxygen to the sensor.
At GM electronics training classes we were told *not* to splice the O2
sensor wires, just for this reason.
I've heard of cases where a really bad running engine, which is
dumping a lot of oil into the exhaust will wick the oil up through the
harness into the PCM.
--
Old Crow
'82 Shovelhead FLTC 92" 'Pearl'
'95 Jeep Wrangler YJ
TOMKAT, BS#133, SENS, MAMBM, DOF#51, SPUNGER#2
  #13  
Old March 2nd 05, 03:10 PM
Mike Romain
external usenet poster
 
Posts: n/a
Default

Some have the air charge coming in around the case to wires joint and
some have it coming in along the insulation for one wire.

This is the outside air charge needed to compare to the inside to make
the signal if any.

I asked 'mic canic' which wire because I for one don't really think he
knows which O2 sensor goes where or which is which.

One type has to be crimped to 'jury rig' it to fit and the other type
can be properly soldered and heat shrinked to jury rig it.

The best is still the one that fits properly......

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

"L.W.(ßill) Hughes III" wrote:
>
> That's hard for me to believe, the sensor's wires have to be
> spliced for the cheapies: http://www.billhughes.com/95YJo2sensor.jpg
> God Bless America, ßill O|||||||O
>
> mic canic wrote:
> >
> > please keep in mind the wiring on the sensor side of the connector carries a very
> > small fraction of air to the sensor so it will work if you cut the wires and
> > the sensor doesn't get the air and the check engine lite will come on
> > a factory wiring schematic with the connector views is what you need

  #14  
Old March 2nd 05, 06:23 PM
Will Honea
external usenet poster
 
Posts: n/a
Default

On Wed, 2 Mar 2005 09:58:25 UTC Old Crow > wrote:

> On Tue, 01 Mar 2005 23:35:57 -0600, JMH > wrote:
>
> >L.W.(ßill) Hughes III > wrote in
> :
> >
> >I've looked into this a good bit at this point. I'm going to get a service
> >manual, it should have the page I need like stated below.
> >
> >I've looked at everything I can get my hand on, including the schematics of
> >Bosch sensors and have seen nothing mentioned about air. Not sure what
> >that even means myself :-)
> >

>
> He's right about the air charge. Not sure of the exact usage, and
> couldn't find it in the service manual(note time of post<g>), but the
> wires to the sensor *do* indeed carry oxygen to the sensor.
> At GM electronics training classes we were told *not* to splice the O2
> sensor wires, just for this reason.
> I've heard of cases where a really bad running engine, which is
> dumping a lot of oil into the exhaust will wick the oil up through the
> harness into the PCM.


I've heard the same story about O2 sensors and one I replaced in a
Mitsubishi PU several years back came with very detailed instructions
on how to coil any excess leads, don't pinch or kink the lead, why you
couldn't cut the lead off, etc. Same for an old Buick - but these
were the old single wire type of 15-20 years ago so I'm not sure how
they apply to current sensors. They've made at least some progress in
the last 15 years.

--
Will Honea
  #15  
Old March 4th 05, 04:06 AM
mic canic
external usenet poster
 
Posts: n/a
Default

the o2 sensor must have a fresh air source outside the exhaust source for comparison
like mike stated
and the o2's receive that from the the o2 sensor wiring. again you should never solder or
crimp a o2 wire below the connector going to the o2 sensor
a 02 can even detect fresh air coming down the exhaust from higher up and send bad
signals( reports )to the pcm which in turn results in poor fuel management adaptives and
will result in a check engine lite to make a long story short
and i did not even mention 02 heater circuts hence the 4 wires and the sensors now


Mike Romain wrote:

> Some have the air charge coming in around the case to wires joint and
> some have it coming in along the insulation for one wire.
>
> This is the outside air charge needed to compare to the inside to make
> the signal if any.
>
> I asked 'mic canic' which wire because I for one don't really think he
> knows which O2 sensor goes where or which is which.
>
> One type has to be crimped to 'jury rig' it to fit and the other type
> can be properly soldered and heat shrinked to jury rig it.
>
> The best is still the one that fits properly......
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> "L.W.(ßill) Hughes III" wrote:
> >
> > That's hard for me to believe, the sensor's wires have to be
> > spliced for the cheapies: http://www.billhughes.com/95YJo2sensor.jpg
> > God Bless America, ßill O|||||||O
> >
> > mic canic wrote:
> > >
> > > please keep in mind the wiring on the sensor side of the connector carries a very
> > > small fraction of air to the sensor so it will work if you cut the wires and
> > > the sensor doesn't get the air and the check engine lite will come on
> > > a factory wiring schematic with the connector views is what you need


 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Bring back the Brat or modernize the Wrangler Carl Taylor 4x4 26 March 6th 05 08:06 AM
Bring back the Brat or modernize the Wrangler Carl Taylor Jeep 41 March 6th 05 08:06 AM
95 Jeep Wrangler Shifting problems [email protected] Jeep 12 January 21st 05 07:56 PM
Wrangler MTR Tires Mladen 4x4 6 September 14th 04 07:04 PM
Goodyear Wrangler AT/R Expedtion Report Peter Strong 4x4 2 September 7th 04 07:05 PM


All times are GMT +1. The time now is 02:33 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 AutoBanter.
The comments are property of their posters.