LQ4 Oxygen Sensor Question
Joined: Sep 2004
Posts: 3,147
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From: Downers Grove, IL
The LQ4`s have 4 o2`s like all of the other LS series engines. 2 before the cats and 2 after, the 2 after may have already been removed if the harness is from a vehicle that was already modded, but there should still be 2 left on the harness.
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Joined: Apr 2008
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From: Chandler, AZ
Do you know if the post cat o2 sensor wires are bundled with the transmission wires?
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From: Chandler, AZ
Ahhh i found my passenger side o2 wire, it was tucked up onto the manifold, it looked like it was connected to something. There is about 4-5 other connectors on the harness that i need to figure out.
Joined: Sep 2004
Posts: 3,147
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From: Downers Grove, IL
A is for the rear o2 sensor
D is for the MAF/IAT sensor
B,C,E I`ll have to look into that, what color are the wires that come off them? IIRC at least 2 of those are for the A/C low pressure switch and recirculation.
D is for the MAF/IAT sensor
B,C,E I`ll have to look into that, what color are the wires that come off them? IIRC at least 2 of those are for the A/C low pressure switch and recirculation.
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From: Chandler, AZ
It looks like B is brown and black, C is darker green and black, E is lighter green and black.
I also found a connector down by the A/C compressor that i have no idea about (ties into the same bundle as the A/C clutch connector). The wires are a light blue and a light green.
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Joined: Sep 2004
Posts: 3,147
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From: Downers Grove, IL
C is the A/C low pressure switch
The connector down by the A/C compressor is the A/C high pressure switch
E should be the low coolant level sensor
B I`m still not sure on, the only thing I can remember that uses a brown and black wired 2 wire plug is the oli level sensor, but I don`t think that will stretch down to the pan.
What year wiring harness is that?
The connector down by the A/C compressor is the A/C high pressure switch
E should be the low coolant level sensor
B I`m still not sure on, the only thing I can remember that uses a brown and black wired 2 wire plug is the oli level sensor, but I don`t think that will stretch down to the pan.
What year wiring harness is that?
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Verdad Gallardo Thread Starter
Teching In
Joined: Apr 2008
Posts: 22
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From: Chandler, AZ
C is the A/C low pressure switch
The connector down by the A/C compressor is the A/C high pressure switch
E should be the low coolant level sensor
B I`m still not sure on, the only thing I can remember that uses a brown and black wired 2 wire plug is the oli level sensor, but I don`t think that will stretch down to the pan.
What year wiring harness is that?
The connector down by the A/C compressor is the A/C high pressure switch
E should be the low coolant level sensor
B I`m still not sure on, the only thing I can remember that uses a brown and black wired 2 wire plug is the oli level sensor, but I don`t think that will stretch down to the pan.
What year wiring harness is that?
its a 2001 harness.
