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whoa, almost blew up another motor

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Old 09-29-2004 | 11:07 AM
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Originally Posted by retsell
How are you doing that? I would like to as well, but I guess i am not smart enough.
i would like to know also.
Old 09-29-2004 | 06:14 PM
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i have gauges for all of these things, the gauges are all electric. all i had to do was conect the signal from each of the sensors into something that efilive can monitor. all the sensors work on a 0-5volt out.

i hooked the fuel presure and boost presure to the rear o2's. they only have a 0-1.1 volt input so i had to use a resistor to get the signal down. just took a wire from the sensor thru a resistor and to the rear o2 input. for the a/f ratio i hooked that sensor output to the gas tank map sensor(who need a presure gauge in your fuel tank?). that is a 0-5v sensor so i didn't have to put a resistor on that one.

after i got them all reading into efilive i used the calc PID's to look at those sensors and had to come up with formulas to convert that voltage signal over to psi or a/f ratio. works great.
Old 09-29-2004 | 06:25 PM
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So ... we can just buy a wideband o2, install it and hook it up to that sensor and will have a wideband setup?! If so, that's awsome. Be sure to turn that DTC code off so you don't get the light saying you forgot to put your gas cap on.

Don't ask what it is, cause I don't have a clue.
Old 09-29-2004 | 06:40 PM
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Originally Posted by Flyer
So ... we can just buy a wideband o2, install it and hook it up to that sensor and will have a wideband setup?! If so, that's awsome. Be sure to turn that DTC code off so you don't get the light saying you forgot to put your gas cap on.

Don't ask what it is, cause I don't have a clue.
no, i dont think you can do that. i dont know how a wideband o2 sensor works. my 02 controler has a 0-5volt output.
Old 09-29-2004 | 06:44 PM
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I would think that the wideband o2 would be the same signal the controller outputs. I figured that would be a 'raw' signal. Is there anyway you could measure the voltage coming out of the controller to the o2?
Old 09-29-2004 | 06:45 PM
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Originally Posted by Flyer
So ... we can just buy a wideband o2, install it and hook it up to that sensor and will have a wideband setup?!
You can't do that. You need the control box to send a reference voltage and control the sensor heater. That would be cool though. I think GM may start putting wideband sensors in some cars in the future.
Old 09-29-2004 | 06:46 PM
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Damn ... I fogot about the heater.

Oh well, another good idea, if it would work.
Old 09-29-2004 | 06:49 PM
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my plx wideband has a 0-5v output

www.plxdevices.com
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