toyotalytrevor

need help. tried seach, but no luck


got a new o2 sensor, but the wires are different colour then the one on the truck


new sensor: 2 black, 1 blue 1 white
old sensor: 2 white, 1 gray , 1 black.


would it be safe to assume the 2 black are for the heater ,white is ground and blue is the signal for the ecm?

dcg9381

I would say no, it's not safe to assume that.. You need a diagram.. what model sensor is it? Part number?

MonsterMaxx

Is it for the truck and does it plug in to the plug? If yes, run it.
If no, are you getting something off ebay and splicing it in or some such thing? In which case you'll have to look up the schema and map it correctly when you spice the wires.

toyotalytrevor

well, i got it from a buddy who rolled his truck 3 weeks after putting it in. It plugged into his truck. (88 toy 22re) but, someone put a universal one in my truck and cut the plug off.

dcg9381

Trevor - you can probably find the wiring information on that 02 senor if you dig on the internet. A part number would help. No instructions with it?

I wouldn't assume with that thing - but if I had to guess, I'd guess that the back wires were sensor and pre-heat grounds. Plugging it in wrong could cause a signficant problem and fry a hard to find fuse... so be careful. I think the 02 pre-heat is powered by the ignition relay, if I recall correctly.

toyotalytrevor

from the ngk webiste.

blue= signal +
white= signal-
black= heater
black= heater