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Author Topic: 02 sensors wrong way round? please help  (Read 1178 times)

Offline ukvolkswagger

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02 sensors wrong way round? please help
« on: 09 April 2012, 13:23 »
hello;
i have an AUM 1.8t engine whith managment light oni got the mechanic to change one of the oxygen sensors and he said they was the wrong way round but i told him not to change it this is the sensor on bank 2 after cat http://www.ecstuning.com/Volkswagen-Golf_IV--1.8T/Engine/Emission/Oxygen_Sensor/ES258802/
and on bank 1 this http://www.ecstuning.com/Volkswagen-Golf_IV--1.8T/Engine/Emission/Oxygen_Sensor/ES892/
please can someone tell me if these are the wrong way round please so i can get decent mpg again

many thanks in advance
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Ukvolkswaggger
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Offline shaft69

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Re: 02 sensors wrong way round? please help
« Reply #1 on: 09 April 2012, 13:36 »
Got virtually brand new Bosch after cat sensor if need one ony done  about 20miles. Wrong diagnosed and wouldn't take back.
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Offline AaronGS

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Re: 02 sensors wrong way round? please help
« Reply #2 on: 09 April 2012, 14:07 »
They look right to me. I have the same one pre-cat as that picture.
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Offline ukvolkswagger

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Re: 02 sensors wrong way round? please help
« Reply #3 on: 09 April 2012, 16:29 »
thank you i will try  change it tomorrow :cool:
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Ukvolkswaggger
Full VCDS, Vag-Tacho,
Can Do:
MK4,MK5 and 6 Golf
all VW, Audi, Skoda and Seat from 1996 to Date
Auto windows when raining
Directional Fog lights
Coming Home Lights
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Miles To Empty,
Remote Windows,
Alarm Beeps
Illuminated Needles

VAG-Com Location List ¦ Recommended Wheel Refurb Places ¦ ¦ Useful DIY Guides MK3
tel or whatsapp: 07850 684 137

Offline shaft69

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Re: 02 sensors wrong way round? please help
« Reply #4 on: 09 April 2012, 18:14 »
My cars a AUM and sure my pre cat not same as on that pic, will check tomorrow though, one thing you'll know that pre cat sensor has prtective heat foil on loom other hasn't.
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MK4 1.8t bored/stroked 2.0lt AEG crank, 83mm supertech pistons, intergrated rods, ACL race brgs, Flowed large port head, Supertech valves, All ARP bolts, GTX2871r turbo, Tial wastegate, 3" pipewerx dp, REVO stage 3 tune, Direct port water meth, MORE TO COME!!! Ready to go racing
Owner of bndynamix ltd. BMW and mini specialist
184 Wallgate, Wigan
WN3 4AL
07966492823.

Offline topher

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Re: 02 sensors wrong way round? please help
« Reply #5 on: 09 April 2012, 18:41 »
What is the fault code?
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Offline Wayne

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Re: 02 sensors wrong way round? please help
« Reply #6 on: 09 April 2012, 20:37 »
The pre cat lambda has a bigger plug, I know this from sorting mine the other week.
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