EFIE circuit diagram.....

[resident_genius]

[resident_genius]

[SeaMonkey]

[resident_genius]

[SeaMonkey]

There are some excellent resources which will assist you in understanding how to deal with your questions.

More and

For 'adjusting' the Oxygen sensor output waveform it may be satisfactory to use an op amp configured as a unity gain non-inverting dc amplifier with provision to slightly vary the dc offset of the output waveshape. It seems that the normal sensor signal doesn't vary in amplitude, but rather, varies in response to 'richness' by increasing or decreasing the magnitude of positive dc offset.

This is easily accomplished with an op amp circuit.

[resident_genius]

excellent. huge help as always seamonkey. i'll get to researching.

[tireboy]

I bought an EFIE and had tried to find out how to install it on my certain vehicle for 4 months ..finally i payed a mechanic 100 dollars and he studied the best he could and installed it.. but there's no difference of any indication that it does anything.. its supposed to flash a green light on idle but never did. now im banging my head to figure out if he wired it correct or what.. my van is 1998 Chevy venture 3.4 L


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Oxygen Sensor
fail fail to succeed

[tireboy]

anyone who has an idea how to fix these things? hmm I'm hopeless now


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fail fail to succeed