need color of sig wire on maf and witch wire is sig on 02 sensore
Make? Model? Fuel type? and year of manufacture?
Right!!!!! As if they're all the same. Did you want us to guess the year, make, model, and engine too?
Yes we do need car description.O2 sensors black wires are normally for the heating element.It should be one of the white wires.The wire will read 0.2 volts with a cold engine and fluctuate between 0.1-0.9 volts at normal operating temp,so look for the wire which has these voltage reading.The maf signal wire will have less than 5 volts on it.Generally it will show 0.60-0.80 volts at idle and increase to between 1.50-2.20 volts at a 2500-3500 rpm level.Be aware that a maf sensors heated wire can become dirty causing it to read and function incorrectly,so it may just need to be cleaned rather than bein replaced
