Well after I install the haltech e6k I thought I killed two 02 sensors because of rich conditions. After the third 02 sensor I figured I should check into the haltech.

Found out that all sensors put a 4mv to 1024mv into the haltech. BUt only when the senor is connected to the haltech. Once removed my A/F gauge indicates correctly.

Is there a way to fix this?

Guess no closed loop for me.

Thanks
Ian

 

Do you mean that when you connect the O2 sensor the Haltech it reads differently on the gauge or that the haltech isnt reading right?

If its the first option, i have seen that kind of problem, and the actual problem is improper grounds somewhere, and possibly interferance with the gauge/sensor operation.

 

Ian.. not all sensors pput out a 4 to 1024MV signal... There are a few 1-5v sensors out there...

But... soimething souds buggared up.... are you running an A/F gauge off the same sensor that you are trying to input into the haltech?????

 

Ian is never good at english, even if it is his native language.

The problem with the sensor is that when it is hooked up to the Haltech, it will read either full lean (4mv) or full rich (1024mw). No in-between values.

A working sensor should show different values 0.45, 0.70, 0.89 etc. depending on how far from stoich it is. When running closed loop for instance, you should be able to see the AF voltage cycle around.

When Ian hooks that same sensor up to his Autometer flashy light A/F gauge, the sensor does do more than just peg the gauge at either end. It cycles between the lights. Therefore, Ian thinks his sensor is fine, and the Haltech input may be buggered.

 

ahhhhhh that makes more sense...