Comments on: 4 Wire Oxygen Sensor http://metroxfi.com/2007/12/4-wire-oxygen-sensor/ Thu, 11 Feb 2010 21:21:36 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Chris Taylor, Jr. http://metroxfi.com/2007/12/4-wire-oxygen-sensor/comment-page-1/#comment-1559 Chris Taylor, Jr. Sat, 10 Oct 2009 00:32:48 +0000 http://metroxfi.com/2007/12/28/4-wire-oxygen-sensor/#comment-1559 ANY 4 wire sensor will work? I have an 88 Cherokee where I accidentally ordered the wrong O2 sensor for it. the sensor "appeared" identical but the plug was reversed (it was for the 4cyl Cherokee) so I swapped the plugs and it did NOT run properly. I eventually gave in and ordered the right O2 sensor and the problems went away almost instantly. So how do I know which will work? are some different? maybe I just wired it wrong or something when I swapped the plugs?? Just curious anything I can do to make it better is appreciated! (I will have my 94 XFI in 3 more weeks :-) ANY 4 wire sensor will work? I have an 88 Cherokee where I accidentally ordered the wrong O2 sensor for it. the sensor “appeared” identical but the plug was reversed (it was for the 4cyl Cherokee) so I swapped the plugs and it did NOT run properly.

I eventually gave in and ordered the right O2 sensor and the problems went away almost instantly.

So how do I know which will work? are some different? maybe I just wired it wrong or something when I swapped the plugs??

Just curious anything I can do to make it better is appreciated! (I will have my 94 XFI in 3 more weeks :-)

]]> By: Koen http://metroxfi.com/2007/12/4-wire-oxygen-sensor/comment-page-1/#comment-1519 Koen Fri, 24 Jul 2009 12:24:40 +0000 http://metroxfi.com/2007/12/28/4-wire-oxygen-sensor/#comment-1519 Thanks for the info! This was what i needed to know Thanks for the info! This was what i needed to know

]]> By: John Johnson http://metroxfi.com/2007/12/4-wire-oxygen-sensor/comment-page-1/#comment-1153 John Johnson Fri, 06 Mar 2009 02:06:12 +0000 http://metroxfi.com/2007/12/28/4-wire-oxygen-sensor/#comment-1153 Which Brand O2 Senssors are Inexpensive? The Stock Geo #2 O2 Sensor Costs more than $100. ARe Chevy or Ford O2 sensors Reliable and inexpensive? Which Brand O2 Senssors are Inexpensive?

The Stock Geo #2 O2 Sensor
Costs more than $100.

ARe Chevy or Ford O2 sensors Reliable and inexpensive?

]]> By: Rick http://metroxfi.com/2007/12/4-wire-oxygen-sensor/comment-page-1/#comment-1097 Rick Tue, 13 Jan 2009 03:55:38 +0000 http://metroxfi.com/2007/12/28/4-wire-oxygen-sensor/#comment-1097 The heater is supposed to stay on when the ignition is in the on position. It doesn't take that much power to run the heater circuit in the sensor. The mileage increase from this mod alone won't be a lot and will depend on your driving conditions. If you do engine off coasting and turn the engine off at stoplights the 1 wire cools quickly and takes a bit before it is working again. The 4 wire will keep working the whole time. So under worse case conditions this might get you another 3-5mpg but normal easy driving it might only be worth 1mpg. It is a cheap mod and pretty easy so I say it is worth doing. The drop in mileage is probably your warm air intake. These engines are very well tuned and hot air going into the intake no matter how I try and do it has always killed my mileage. Cold air intakes have not shown any change to mileage one way or the other though, but they did give a bit of top end power if that matters to you. I have tried air from 150 degrees right off the exhaust manifold to 10 degrees above ambient air temperature and pretty much anything over 90-100F makes the mileage go down. The heater is supposed to stay on when the ignition is in the on position. It doesn’t take that much power to run the heater circuit in the sensor. The mileage increase from this mod alone won’t be a lot and will depend on your driving conditions. If you do engine off coasting and turn the engine off at stoplights the 1 wire cools quickly and takes a bit before it is working again. The 4 wire will keep working the whole time. So under worse case conditions this might get you another 3-5mpg but normal easy driving it might only be worth 1mpg. It is a cheap mod and pretty easy so I say it is worth doing.

The drop in mileage is probably your warm air intake. These engines are very well tuned and hot air going into the intake no matter how I try and do it has always killed my mileage. Cold air intakes have not shown any change to mileage one way or the other though, but they did give a bit of top end power if that matters to you. I have tried air from 150 degrees right off the exhaust manifold to 10 degrees above ambient air temperature and pretty much anything over 90-100F makes the mileage go down.

]]> By: gmtech http://metroxfi.com/2007/12/4-wire-oxygen-sensor/comment-page-1/#comment-1096 gmtech Tue, 13 Jan 2009 02:57:11 +0000 http://metroxfi.com/2007/12/28/4-wire-oxygen-sensor/#comment-1096 i did this mod on my 91 lsi 4/auto. after my first full tank, mpg dropped from 38.5 to 37.6. i guess i can't blame the 4 wire sensor, for this drop, so i will keep it on there and see what happens. my only other mods is an xfi cam, along with block heater and wair air intake. its winter time here in the south usa, so i'm sure mpg will pick up when warm weather comes back. btw, if anybody is wondering, i hooked up the heater circuit to 12v & ground to see how hot the sensor gets while on a workbench. the highest temp i recorded w/non contact thermometer was almost 300 f. this was after about an hour of being plugged up. hope this helps. i did this mod on my 91 lsi 4/auto. after my first full tank, mpg dropped from 38.5 to 37.6. i guess i can’t blame the 4 wire sensor, for this drop, so i will keep it on there and see what happens. my only other mods is an xfi cam, along with block heater and wair air intake. its winter time here in the south usa, so i’m sure mpg will pick up when warm weather comes back. btw, if anybody is wondering, i hooked up the heater circuit to 12v & ground to see how hot the sensor gets while on a workbench. the highest temp i recorded w/non contact thermometer was almost 300 f. this was after about an hour of being plugged up. hope this helps.

]]> By: gmtech http://metroxfi.com/2007/12/4-wire-oxygen-sensor/comment-page-1/#comment-1048 gmtech Wed, 31 Dec 2008 03:21:33 +0000 http://metroxfi.com/2007/12/28/4-wire-oxygen-sensor/#comment-1048 so the heater circuit remains on the whole time that the car is on?? did you try just this mod and run a couple tanks of gas to see if there was an improvement in mileage?? thanks. so the heater circuit remains on the whole time that the car is on?? did you try just this mod and run a couple tanks of gas to see if there was an improvement in mileage?? thanks.

]]> By: Rick http://metroxfi.com/2007/12/4-wire-oxygen-sensor/comment-page-1/#comment-7 Rick Wed, 02 Jan 2008 04:49:16 +0000 http://metroxfi.com/2007/12/28/4-wire-oxygen-sensor/#comment-7 Any 96 up car should probably have a 4 wire oxygen sensor. Take a propane tank and a voltmeter like described in the article to find a good one or 2. Any 96 up car should probably have a 4 wire oxygen sensor. Take a propane tank and a voltmeter like described in the article to find a good one or 2.

]]> By: Doug Bell http://metroxfi.com/2007/12/4-wire-oxygen-sensor/comment-page-1/#comment-6 Doug Bell Tue, 01 Jan 2008 06:46:24 +0000 http://metroxfi.com/2007/12/28/4-wire-oxygen-sensor/#comment-6 Hi Rick I'm new at this. I do have a near by u-pull yard. What autos should I be looking for to find this 4 wire injector? How far back did they start using these? Thanks again Doug (new owner of a 92 XFI) Hi Rick
I’m new at this. I do have a near by
u-pull yard. What autos should I be looking for to find this 4 wire injector?
How far back did they start using these?
Thanks again
Doug (new owner of a 92 XFI)

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