RX - 1st Gen (1999-2003) Discussion topics related to the 1999 -2003 RX300 models

o2? sensor ** connector ** location?

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Old 11-08-15, 06:34 AM
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iJermz
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Default o2? sensor ** connector ** location?

Hey guys I have a 2000 Lexus RX300 AWD

It has been work in progress to bring back to life. I bought it really cheap as it has a lot of rust from being on the coast. I love to have it as a "backup/go to work/drive in snow" automobile to my newer lexus rx.

Ok I've done a lot of random things to it and came across this o2 sensor and realize the wire has been cut. It looks like the previous owner tried to take out the sensor itself and that has been stripped, and i guess he cut the wire to take it out with a non o2 sensor socket.

Question: Can someone show me where the wire WOULD lead to? I've searched this forum/youtube/google but most of what I see is a picture or video showing just the screw-in part of the sensor itself.

When i pop the hood and look straight down the pictures is what i see. I'm assuming the air fuel sensor is the one on top pointing straight at me..... and the one coming out from the side is the o2 sensor?

THANKS IN ADVANCE FOR ANY HELP AS ITS MUCH APPRECIATED!
Attached Thumbnails o2? sensor ** connector ** location?-img_2332.jpg   o2? sensor ** connector ** location?-img_2333.jpg  
Old 11-08-15, 06:59 AM
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carguy07
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Now there's something you don't see every day!

The lower one is the stock OE sensor. I would guess it got stuck and the "mechanic" abandoned it and decided to drill the manifold and weld in a new bung. The upper one is a hacked in sensor, probably universal so the wires were cut to splice it in. is your check engine light on?
Old 11-08-15, 07:18 AM
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salimshah
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Originally Posted by carguy07
Now there's something you don't see every day!

The lower one is the stock OE sensor. I would guess it got stuck and the "mechanic" abandoned it and decided to drill the manifold and weld in a new bung. The upper one is a hacked in sensor, probably universal so the wires were cut to splice it in. is your check engine light on?
Excellent find.

You are the man!.

Salim
Old 11-08-15, 07:25 AM
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iJermz
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Originally Posted by carguy07
Now there's something you don't see every day!

The lower one is the stock OE sensor. I would guess it got stuck and the "mechanic" abandoned it and decided to drill the manifold and weld in a new bung. The upper one is a hacked in sensor, probably universal so the wires were cut to splice it in. is your check engine light on?
First off thanks for the fast response.

p0300
p0302
p0303
p1310
p1315
p0300 P
p0302 P
P0303 P

I bought these ignition coils/spark plugs from rock auto:
SPECTRA PREMIUM / COOLING DEPOT part #C528
Denso part #3279 (gap is .044)

I bought these new coil packs and spark plugs and some reason i still get those codes. I've seen several post about those codes i'll have to look into it later.

The SUV is drivable but after going somewhere and it idles like at a fast food place.....when i get up to 2500RPM (maybe 40mph) it jerks bad. I'm assuming its related to ignition coil or something thats been stated in those other ads?
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