Rep Power: 0

i installed a stochometer (air/fuel) to reprogram my fuel computer, and i had a "stalling" problem on cold start-up. i learned how to trick the stall without setting off the engine light. i thought the stall was a fuel filter, or a ing. coil, or somthing else. just to narrow down my "possable problem" list, i unplugged the air/fuel guage from the o2 sensor, and the stall dissappeared!! also i noticed "more power!" the connection from the guage was causing too much resistance in the wire, causing a mis-inturperted signal to the ECU.

so.....is there somewhere else i can tap this wire for the guage where it will not cause problems????

 
Rep Power: 563

Directly into the ECU and no, I don't know how it's done but that's the best location.

I had to replace my o2 sensor because they gauge wrecked it. Had the same problems you did.

 
Rep Power: 0

what do you mean? the tap needs to be 3-5 inches from the sensor....if i go all the way to the ECU, i will not get an accurate reading.

i guess i should haved asked;
"does anyone know of a o2 sensor that puts out more AMPS so i could tap into it?"

 
Rep Power: 563

Unless you have a fuel management system I don't think you're ever going to get an accurate reading. The system varies constantly and as a result you'll see it go back and forth and likely not stay in one place for very long.

 
Rep Power: 285

for what its worth, i had an a/f gauge on my old car and i tapped where the o2 sensor wire going into the ecu, about 3" from it. o2 sensors run off sending voltage #'s back to the ecu, your gauge might be throwing that off somehow by stealing a small amount of the signal, or maybe you cut one of the copper strands and its sending incorrect voltages back to the ecu because of that. what kind of a/f gauge is it? the only kind you should tune with are wideband o2 sensors. regular .94v type gauges or blinky light gauges arent reliable and accurate enough

 
Rep Power: 0

no wires got cut, i used a T-tap. apperently the problem was the T-tap causing too much resestance...sending a wrong signal. (as both you and i stated prevously) here soon i will search out the 1st o2 sensor wire from the ecu.
i don't have any major engine stuff done yet. (my profile ) i just watch where the needle peeks, and troughts, and estimate where the "sweet spot" is depending on throttle %. when i set my fuel computer up, i made guesses on the fuel % increase. as a result, when i installed the A/F gauge, i found that anything above 2200 RPM would go instantly to full rich. so it served it's perpose in getting the fuel computer set to a much more practical level. (peak was set to 10%, now a mere 5% is peak at 4800 RPM)

by buying/installing/un-installing this guage, i was able to set up my fuel computer "more" correctly than just guessing. i've saved the money i spent on guage/guage pod in fuel, because i have more power, and my gas millage has averaged an astonishing 39-41 MPG. ....for better tunning, i plan to visit a dyno soon.....

it's a megan racing guage. i don't know what a " .94v guage" is....this one reads between 0v and 5v.