does anyone know how to do this?

[se7en]

okay, my car runs perfect for about 2 minutes after I start it(doesn't run lean at all)

then it seems like the stock ecu wants to run leaner. I think that the ecu tells the injectors to run rich at first to warm the engine up.

is there a way to trick it into always being in that mode?

is it called diagnostic mode?.hmmm

7

[shameem]

unplug the o2 sensor and it will run in limp mode ...

Or get a O2 clamp - http://www.flyinmiata.com/support/instr ... switch.pdf" onclick="window.open(this.href);return false;

[se7en]

ya. I already unpluged the o2 sensor. that didn't help...I will make a o2 clamp thingy tomorrow and try that.

7

[shameem]

since v6 engines have 2 o2 sensors you might have to clamp them both to see any effect.....


Besides - you said you have a WBO2 for the front bank and NBO2 for rear (which goes to the ecu) right?
What did you do with the wire for front bank O2 sensor - did you leave it hanging? The ECU might be trying to average readings from both banks and maybe thats why you are having problems - just a thought.....

[se7en]

my wideband doesn't go to the ecu. just to the gauge.

I just unpluged the rear o2.(it was broken anyway)

7

[Volones]

I don't have any idea how to get your car to always run like it does when it first starts, but I expect initially your choke is on, then the ECU turns it off and that's when you start running lean.
Electronic choke ftw.

Vol

[shameem]

When you unplug the connectors - did you just leave it hanging? You might want to try grounding the sensor wire for both banks - If you have a stable enough ground that will definitely put up a code in the ecu and make it run in limp mode....

[nos92mx3]

Well remember that normally your rear o2 sensor is a catalyst monitor/fine tune AFR.
Unplug your first O2 sensor and see if that helps, also try running a resistor with the CLT temp sensor, it should trick the motor into thinking that its still warming up and will thus add more fuel.

[shameem]

Well remember that normally your rear o2 sensor is a catalyst monitor/fine tune AFR.

The V6 engines have two banks of cylinders - front and rear and has an O2 sensor for each bank (before the cat). The cat monitor comes in later models - possibly obd2.

[se7en]

CLT? where is that located in the engine bay?

7

[nos92mx3]

CLT? where is that located in the engine bay?

7

Your coolant temperature sensor, good question on where its located

[se7en]

okay, I know that they are 3 sensors in the water neck, but which one is the one to put the resister in?

7

[se7en]

okay, I found the one I need, I will try a resistor(10000 ohms) in that wire tonite.

If that works, I love you nos92mx3! (Not for real, but you will be my hero for a day for sure.)

7

[se7en]

okay, nos92mx3 is officially my hero for a day. That worked like a charm.

thanks for the advice man.

cheers

7

[nos92mx3]

okay, nos92mx3 is officially my hero for a day. That worked like a charm.

thanks for the advice man.

cheers

7

Glad to hear that, so no more lean conditions huh?