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sams255

Replaced Oxygen Sensor 530D

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So i decided to replace my oxygen sensor Pre cat. See the pic below its caked in carbon. Car has done around 183K. It wasn't too difficult to remove i had to buy a 22mm oxygen sensor socket for around 4 pounds and i used some specialist wd40 an hour before removing the sensor. Just make sure you follow the wires and see how they are clipped in. As you will need to reroute the wire then when you put the new sensor make sure the wires are clipped in otherwise they will melt etc. As you have to take off the intake housing i thought id might as well take off the MAF/MAP sensor and give them a clean. see pics below they were covered in carbon.

 

One i reinstalled the new sensor and torqued it up you have to reset adaptations for the emission side. so did that on ista. What took more time was initially looking around to see how cables went. The actual job was straight forward. The car seems way more responses maybe due to MAp/MAF cleaning

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IMG_20200510_104638.jpg

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1 minute ago, 535i Andrew said:

Good one, did you have exhaust hot to help things loosen up first or just WD40, brute strength and a prayer? 

No i didn't have exhaust hot. i just sprayed it a few times with specialist  WD40, on another youtube video a guy suggested that compared to the normal WD40, didn't really need to use Brute strength.

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3 hours ago, sams255 said:

So i decided to replace my oxygen sensor Pre cat. See the pic below its caked in carbon. Car has done around 183K. It wasn't too difficult to remove i had to buy a 22mm oxygen sensor socket for around 4 pounds and i used some specialist wd40 an hour before removing the sensor. Just make sure you follow the wires and see how they are clipped in. As you will need to reroute the wire then when you put the new sensor make sure the wires are clipped in otherwise they will melt etc. As you have to take off the intake housing i thought id might as well take off the MAF/MAP sensor and give them a clean. see pics below they were covered in carbon.

 

One i reinstalled the new sensor and torqued it up you have to reset adaptations for the emission side. so did that on ista. What took more time was initially looking around to see how cables went. The actual job was straight forward. The car seems way more responses maybe due to MAp/MAF cleaning

IMG_20200510_102305.jpg

IMG_20200510_103523.jpg

IMG_20200510_104029.jpg

IMG_20200510_104638.jpg

IMG_20200510_111208.jpg

Good job think al clean out my map sensor.

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