O2 delete??

[poweranger84]

is there a way to remove the o2 and trick the computer into thinkin its still readin good?

 

[valleyvinyl84]

Why?

 

[Wicked_Sludge]

yes.

at the cost of horsepower, fuel economy, and emissions.

 

[The Fox]

Hook up a resister that matches that of the voltage of the O2 sensor's output.
Nick

 

[Wicked_Sludge]

the O2 sensors generate a varying voltage of between 0.0 and 1.1 volts. the PCM looks for the voltage to cycle in order to control the air/fuel mixture. installing a resistor that sends a steady voltage to the PCM will trip a CEL with code 41 or 42.

i cant imagine why anyone would want to bypass the O2 sensor...

 

[marlow3000]

is there a way to remove the o2 and trick the computer into thinkin its still readin good?

sure if you want to do something that makes about no sense at all.

 

[stegomon]

well guys that put on strait pipe header for a turbo set up do that on the zx2..becouse that the cat is so close.....does not throw on an engine code and screw the puter or motor up

 

[MAKG]

Hook up a resister that matches that of the voltage of the O2 sensor's output.
Nick

Goodness gracious!

Why the F do you post crap if you don't have a clue?

First question: how do you set the voltage of a resistor?

Second question: how do you make a resistor switch upon command from the PCM?

 

[MAKG]

i cant imagine why anyone would want to bypass the O2 sensor...

I can. He doesn't understand it.

 

[feellnfroggy]

because he plans to pull his cats, and this will cause the o2's to throw a code? Its easier to delete the o2's. But its best done in accordance with a tuner/programmer, diablosport or sct. If your not pulling the cats off its just not a wise idea.

 

[Psychopete]

because he plans to pull his cats, and this will cause the o2's to throw a code?

Mine never threw a code . It was hallowed and I never replaced with another cat. And FWIW, there's only one o2 sensor.

Pete

Edit:
If you want to get rid of EFI, apparently you can put a duraspark dizzy in a 2.9L. The carb adapter would probably be the easy part..

http://therangerstation.com/forums/showthread.php?p=295156#post295156

 

[The Fox]

Goodness gracious!

1. Why the F do you post crap if you don't have a clue?

2. First question: how do you set the voltage of a resistor?

3. Second question: how do you make a resistor switch upon command from the PCM?

1. Because Ohm's Law is on my side.

2.

A resistor is a two-terminal electronic component designed to oppose an electric current by producing a voltage drop between its terminals in proportion to the current, that is, in accordance with Ohm's law: V = IR. The resistance R is equal to the voltage drop V across the resistor divided by the current I through the resistor.

All you have to do is wire power to a resister, then to the computer so it thinks there is voltage being generated, but it is just a lowered voltage from the vehicles 12v electrical system.

3. Second, it should not do that. It will only reduce the voltage by a specific amount all the time. Unless you use a resistor like a TPS(I forget the specific type) on the throttle plate to measure it's movement.Just need one that will lower the voltage enough to match what the computer wants to see. Then attach it to the throttle so when you give move the throttle it will increase/decrease the amount of volts going to the computer. Just thinking about it, this could be a way

Nick

 

[Wicked_Sludge]

the PCM does not look for a steady voltage from the O2 sensor(s).

its painfully obvious that you know nothing of fuel injection.

and for those that think he wants to delete the cat converters: this is a 2.9 we're talking about. it does not have a cat efficiency monitoring O2 sensor. it has one O2 whos job is to control the engines fuel trim. the engine will run like shit, have low power output, high fuel consumtion, and spit unburnt hydrocarbons out the tailpipe if you delete this O2.

end!

 

[The Fox]

I know it does not, that is why I said you need something that is going to give variable resistance. That is what a TPS does.
Nick

 

[Wicked_Sludge]

you should probably go do some reading up on how fuel injection works. its still very obvious you dont know.

you really shouldnt be offering up advise when you dont have a grasp of the basic concept of how a device functions for yourself.

a resister (even a potentiometer, as used in a TPS) will not work, and cannot be made to work.