02 sensor change

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Oct 22, 2018 | 09:57 PM

Sootbox

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From: Sharpthorne

02 sensor change

Hi. Just changed 02sensor. EML went out. Then started running as rough as a dog...spluttering,hunting,disconnect the sensor so it triggers theEML then car runs fine as usual..clear the code light and it runs rough again? What could be the problem. Any ideas. Thx Chris

Oct 22, 2018 | 11:31 PM

JDM_Stig

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From: Mount Weather

What 02 sensor did you fit, was it Denso ?

Oct 23, 2018 | 12:39 AM

Sootbox

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From: Sharpthorne

Wasn’t Denso. Bosch I think with various part numbers....but now reading more into it I should have gone for Denso...

Oct 23, 2018 | 12:40 AM

Sootbox

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From: Sharpthorne

What part no is for the Denso?

Oct 23, 2018 | 09:34 AM

JDM_Stig

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From: Mount Weather

Quote:

Originally Posted by Sootbox

What part no is for the Denso?

What car ??? lol we arent mind readers.

Oct 23, 2018 | 10:01 AM

Don Clark

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From: Harpenden

Quote:

Originally Posted by JDM_Stig

What car ??? lol we arent mind readers.

From another thread

Quote:

I have a wrx bug eye wagon 2002

and which sensor did you change front (A/F sensor) or back (O2 sensor) ????

Oct 23, 2018 | 10:35 AM

Vxr2010

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From: Herts

Did you reset the ecu after fitting the sensor maybe worth a try

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Oct 23, 2018 | 07:09 PM

bustaMOVEs

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From: The 2dr club

Generally with o2 sensors it's best to replace both as sometimes they give conflicting reading, you 'may' also need to reset fuel adaptations in ecu to relearn fueling again.

Oct 23, 2018 | 11:19 PM

Sootbox

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From: Sharpthorne

Ha ha. For all that are not mind readers. I have a 2002 wrx bug eye wagon and changed the front sensor. Re set the ecu, do you mean by disconnecting the battery ? Then yes...

Oct 24, 2018 | 07:09 AM

#10

Don Clark

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From: Harpenden

https://www.worldcarparts.co.uk/suba...sor-22641aa042

https://importcarparts.co.uk/parts-info.asp?id=4822

Last edited by Don Clark; Oct 24, 2018 at 07:11 AM.

Oct 24, 2018 | 10:59 AM

#11

JDM_Stig

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From: Mount Weather

Quote:

Originally Posted by Sootbox

Ha ha. For all that are not mind readers. I have a 2002 wrx bug eye wagon and changed the front sensor. Re set the ecu, do you mean by disconnecting the battery ? Then yes...

So No then, as the Newage has NVM, so the battery being removed isnt the same as classics . . .

Oct 24, 2018 | 02:03 PM

#12

TECHNOPUG

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From: Tetbury

I've changed the front sensor on both an 02 and 05 WRX and experienced no issues. Both with genuine Denso parts. So I'd be confident in saying that Bosch part is causing the issue. And as said, you can't reset the ECU in a Newage without using a Tactrix cable/laptop (I never had to reset either of mine after the replacements).