Re: 95 Wrangler O2 Sensor Wiring HELP!

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Re: 95 Wrangler O2 Sensor Wiring HELP!
DougW 1 March 2005 02:40:35
	JMH did pass the time by typing: I've played with as many combinations that I can and either the engine will> not crank, or I get the same check engine light code. I can go purchase> another o2 sensor in case this one is fried, but wanted to try to get it> wired right first. It's too late for this advice. Hopefully you haven't destroyed the ECU, but wiring the O2 sensor the wrong way can damage it and the ECU. When it comes to wiring, don't guess. Unless someone here posts the pinout, your going to have to contact the dealership and get a copy of the wiring diagram. My 93 service books don't have those colors. My suggestion is buy the service book. It will pay for itself in the first couple of repairs. -- DougW
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Patrick 2 March 2005 06:32:14 [ permanent link ]
	never pay to be cheap, "JMH" <maps@leagh.com> a йcrit dans le message de news: Xns960BB6EDF77E4mapsleaghcom@216.196.97.131...> L.W.(Яill) Hughes III <billhughes@cox.net> wrote in> news:4223AA15.2F69C5F5@cox.net:> ah this makes sense. He did not tell me the whole story I don't> mind buying a new one at all, I just want to make sure I get the wiring> right before I put the new one in. I need a new plug for the wiring that> goes from the wiring harness, he cut that one off . I think I can go> by the colors on the chart you mentioned below.> Thanks!!> Jay> Hi Jay,>> The previous owner bought an after market Oxygen Sensor for about>> half price, knowing he would have to splice it in. I think you are SOL>> without those directions. The 21 code is a short between the heating>> element and the zero to one volt signal to your computer. Your best>> bet is to buy a stock one that plugs into your connections. But with>> an ohms/volt meter you may figure it out via the plug timing at:>> http://www.billhughes.com/o2sensor.pdf Couple of extra pages in there>> just point out the color codes change at a drop of a hat.>> God Bless America, Яill O\|\|\|\|\|\|\|O>> mailto:LWHughes3rd@aol.com>> JMH wrote:>>> I just purchased a 95 Wrangler with the 2.5L 4 Cyl. engine. I get a>>> code 21, which is related to the 02 sensor. The guy I got the jeep>>> from just replaced the 02 sensor. The connector was bad, so he cut>>> it out and spliced the wires together and got mixed up. He said ever>>> since then the light comes on. The engine runs fine, but does not>>> idle well when it heats up, I am hoping this is related to the>>> sensor, but it may not be. I just want to get the light out.>>> Can anyone tell me how to wire this thing? There are the following>>> wires coming from the wiring harness:>>> Black>>> Black with Blue Stripe>>> Black with Green Stripe>>> Green with Orange Stripe>>> and coming from the sensor:>>> White>>> White>>> Black>>> Gray>>> This is how it is currently (runs this way):>>> Black - White>>> Black/Blue - White>>> Blk/Green - Gray>>> Green/Orange - Blk>>> I've played with as many combinations that I can and either the>>> engine will not crank, or I get the same check engine light code. I>>> can go purchase another o2 sensor in case this one is fried, but>>> wanted to try to get it wired right first.>>> Any help would be greatly appreciated!!>>>
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L . W . Hughes III 2 March 2005 08:39:42 [ permanent link ]
	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, Гџill O\|\|\|\|\|\|\|O mailto:LWHughes3rd@aol.com 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
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Mic Canic 4 March 2005 07:06:32 [ permanent link ]
	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.(Гџill) 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, Гџill O\|\|\|\|\|\|\|O> > mailto:LWHughes3rd@aol.com> > 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
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Re: 95 Wrangler O2 Sensor Wiring HELP!

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