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Installing A Air/fuel Guage

twoquik

By twoquik,
in General Automotive Discussion

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Kennedy Mentor

Kennedy

Posted
Posted

What brand is it? Different colour wires for different brands.

Basically it's one wire for power, one wire for ground and one wire piggy backing off the O2 sensor wire coming off the dump pipe. Best to make the join at the ECU pin out. (number 29 I think...can someone please confirm?)

Kennedy Mentor

Kennedy

Posted
Posted

Not sure why but I had a mate that bridged it at the O2 sensor at the dump pipe and it shorted his stock ECU. Besides, it's much easier to run a wire from your dash/ A pillar to your stock ECU rather than run a wire through your firewall and onto your sensor.

Let Me Drive Mentor

Let Me Drive

Posted
Posted

i agree with paul i have one and it does nothing good but jump all around when driving and nothing much else, get a oil temp or a water temp they are much more usefull in drive and knowing whats going on under the bonnet

leech_ Grand Master

leech_

Posted
Posted

If you have had a look at the wire on top of the 02 sensor it is thin as you would want to be very careful you dont cut it off.

i dont completly agree with paulr33 on this issue. yes in most cases it's not that great but when you are giving it to the car it does give you a good indication of how rich/lean your car is running however in day to day driving its crap like "let me drive" said it does just bounce all over the place

paulr33 Grand Master

paulr33

Posted
Posted

it will not give you an accurate representation of "rich" or "lean" im afraid. its too narrow and slow for anything "human" usesful. it is for ecu closed loop feedback to save fuel ecomony and nothing else. i certainly wouldnt use the value reported on the guage for anything other than a giggle factor when you boot it, cos all its going to do is show "rich" when you do, which if course is fairly obvious, of course its rich.

try a wideband sensor in the car with a guage and watch the difference, then its worth it. by all means do it, just dont expect anything useful from the guage other than rich lean bouncing

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