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Voltage drop issue!!

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Old 10-30-2018, 09:43 PM
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Evanryno55
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Default Voltage drop issue!!

Hello guys I have a 2003 350z with 142k miles.

I purchased this Z off someone who unfortunately neglected my baby one of the things they did was they drove the car extremely low on jacked up coils and scraped off my 02 bank 2 sensor 2 connector. They used some male and female disconnects to fix the issue they caused. I’ll insert pictures. Does anyone have this issue or can they look under their DE and tell me which wires on the o2 sensor 2 go to the wires on the sensor connector? I’m also getting random voltage drops while driving my car. I’m just wondering whether or not this is the issue or that my camshaft position sensors having oil on them is causing it.

Last edited by Evanryno55; 10-30-2018 at 09:50 PM.
Old 10-30-2018, 10:01 PM
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bealljk
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if you're looking at the sensor connect head on and the locking mechanism is at the 12 o'clock position:

Top Left: Black
Top Right: White
Bottom Left: White
Bottom Right: Grey

I dont know how to distinguish the two whites but it may not matter. They may be a voltage feed.
Old 10-31-2018, 08:10 AM
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Cracka350
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I'm looking at replacing an upstream sensor myself. Any advice for best practices on wiring connectors?
Old 10-31-2018, 08:16 AM
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bealljk
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just replace the whole sensor ... you don't need to re-pin anything
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dkmura (10-31-2018)
Old 11-01-2018, 06:35 AM
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Evanryno55
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Default How can I replace the whole sensor even if it’s sheared off?

Originally Posted by bealljk
just replace the whole sensor ... you don't need to re-pin anything
Both of the green sensors are cut off so I am an electric noob and have no experience with re-wiring.
Old 11-01-2018, 06:37 AM
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Evanryno55
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Default Do you think..

Originally Posted by bealljk
if you're looking at the sensor connect head on and the locking mechanism is at the 12 o'clock position:

Top Left: Black
Top Right: White
Bottom Left: White
Bottom Right: Grey

I dont know how to distinguish the two whites but it may not matter. They may be a voltage feed.
Do you think my voltage dropping issue while at idle could be because I need a new valve cover gasket and my camshaft position sensors have oil in them??
Old 11-01-2018, 09:02 AM
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bealljk
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Originally Posted by Evanryno55
you think my voltage dropping issue while at idle could be because I need a new valve cover gasket and my camshaft position sensors have oil in them??
Anything is possible ... If you don't know I would suggest taking your car to a shop to have it formally diagnosed
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