Question about 2005 Pontiac Sunfire
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Posted on Jan 02, 2017
SOURCE: O2 sensor wiring
ok the two white go to the two brown, the creame to the black and the grey to the purple,
if this don't work just swap the last two,
it will not damage any thing on your car, just if is not right it will turn the light on,
but the withe cables definly go to the brown they are only grownds
Posted on May 28, 2008
You have an heated Oxygen sensor. 2 of the wires heat up the sensor and keep it at a certain temperature, it is turned on and off by the computer. The other 2 are use to send a very low voltage reading back to the computer to tell the computer if the engine is running rich or lean. I don't have a diagram to tell you which wire does what but you can get a manual and that should give you the information that you need and tell you how to trouble shoot it to tell if the sensor is bad or not, you may want to look for a wire laying on the exhaust, I have found wires burnt and lay on the metal.
Posted on Oct 31, 2008
SOURCE: oxygen sensor replacement
you need to rent an 02 sensor socket and use a ratchet and the socket to remove it, there are two on the exhaust pipe one before the cat, you can see it on the exhaust pipe and one after. normally the 1at one goes out. cost $75.00 please rate if helpful.
Posted on Aug 14, 2009
Testimonial: "it was very helpful! thanks"
Assuming you mean replacing the fuel PUMP, the 2 wires are different guages. Connect the lighter wire to the lighter wire and the heavier wire to the heavier wire. If the new harness uses both the same size wires, the heavier wire on the vehicle side (solid black) is for the fuel pump ground. Lighter wire is for fuel guage sending unit.
Posted on Sep 21, 2009
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