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jeremey
Dodge Dakota
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7/07/2002
12:29:47
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 Subject: air/fuel gauge?
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Message:
i just got the gauge and dont know what wire to hook it up to, i have a 1994 dakota 5.2 automatic and my o2 has 4 wires, 2 white 1 grey 1 black any help would be great.
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Bruce P
Dodge Dakota
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7/09/2002
23:02:02
|  RE: air/fuel gauge?
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Message:
I know this is not a whole lot of help but may get you started in the right direction.
1) 2 of the wires are for the HEATER that allow the O2 sensor to come up to operating temp faster.
2)The other 2 wires are the ones you want to connect to.
I KNOW I have seen a website that has pictorial diagrams on O2 sensor wiring. (wire color meanings) Have you tried some web searches with a good search engine?
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conig
Dodge Dakota
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7/10/2002
14:27:39
| RE: air/fuel gauge?
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Message:
the gray is your signal wire.
I have tried hooking my gauge to this wire before in the past and it reads ridiculously low. I've been told you want to hook it upto the o2 sensor signal after the harness but on my truck I can't get to it.
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conig
Dodge Dakota
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7/10/2002
14:29:52
| RE: air/fuel gauge?
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Message:
to bad we can't connect it on the pcm itself. unless someone knows the wire color.
mines a 2000 4.7l
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jeremey
Dodge Dakota
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7/10/2002
14:40:07
| RE: air/fuel gauge?
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Message:
i have read that the orange wire with the white line 18gage on your pcm is the one you might tap into.i believe i read that on speedtweaks.com
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Bruce P
Dodge Dakota
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7/10/2002
22:05:07
| RE: air/fuel gauge?
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Message:
an AF gauge expects to be connected to an O2 sensor. All (properly functioning) O2 sensors have the exact same output voltage curves.
Do not forget that a O2 pigtail wire-harness is VERY sensitive to installation. This is because the O2 sensor pigtail is also used to draw in atmospheric "air" for comparison to the exhaust gasses. pinching or otherwise damaging the pigtail can make an O2 sensor inaccurate.
The main differences in O2 sensors is the "response speed" characteristics.
The LED-type gauges are cool-looking but there are more accurate ones with a needle. I know a guy that has BOTH types installed in parallel and he tells me that the needle gauge is the one he referrs to the most.
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Bruce P.
Dodge Dakota
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7/10/2002
22:20:42
| RE: air/fuel gauge?
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Message:
I just did 5 minutes of searching on the internet and came across these URLs. You may find them useful
AF meters
http://www.dalhems.com/electronics/halmeter.html
http://pages.prodigy.net/bipes/afschem.htm
http://www.scuderiaciriani.com/rx7/AF_meter.html
O2 Sensors
http://www.mr2.com/TEXT/O2_Sensor.html
http://www.volksparts.com/o2sensors.htm
http://my.engr.ucdavis.edu/~avsmith/o2sensor.html
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Craig McKinne
Dodge Dakota
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7/29/2005
17:12:35
| Speed sensor
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I have a 2000 2wd Dakota w/ 4.7 V8. Code said Speed Sensor was bad. Bought a new one. Where is the sensor located?
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hybrid
Dodge Dakota
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7/30/2005
19:54:18
| RE: air/fuel gauge?
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Message:
yeah make sure you solder it to the signal wire, crimping it will most likely result in bad readings and your o2 won't be very happy.
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