Oxygen Sensor - Need Help - Page 2

Feb 5, 2011 | 09:35 PM

#26

rqbs

Registered User

Joined: Oct 2010

Posts: 13

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There is NO cat converter. Already mentioned that. And without the CAT I/anyone else wont bother much about the Rear O2 sensor.

But, the P0031 is for the Front O2 sensor. At least the CEL Code chart said so.
(P0037 is for the Rear)
Please reconfirm. Thanks.

Feb 5, 2011 | 10:06 PM

#27

nycgps

Out of NYC

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Joined: Jun 2005

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From: Planet Earth

Quote:

Originally Posted by rqbs

04 Rx8. 6 MT. No Cat Converter. Auto Exe Exhaust. Mileage 10K miles.
(new plugs)

BHR Ignition Coils: CEL code P0351 to P0354 (for the after market coils as expected).
Drove about 600 Miles with the CEL on. CEL code P0031 (came on and off at times)
Problem: Ignition Cut off at around 6500 rpm (2nd gear)

Mechanic said the coil wires are not messed up.
Changed back to the stock coils: CEL P0031 (front O2 sensor)
Drives sort of ok. Felt the ignition cut off at around 7500 rmp at one of the pulls (2nd gear)

Fuel consumption is high for sure.. idle is ok..

Can the front O2 sensor be a reason for the ignition cut off?
The mechanic wasnt too convincing when he mentioned that the BHR coil wires were messed up. Are the coils &wires ok?

Any suggestions would be appreciated.

the car needs Oxygen feed back (Front O2 Sensor) in closed loop mode.

and if it fails yea your mpg will be super shitty and you gonna have a lot of problems.

So, just replace it.

DO NOT buy Denso part, because it seems that they listed the wrong part. they probably list the Rear O2 As Front. Cuz they're different.

Buy either Bosch 15043 or NGK 25673, or just get stock OE replacement.