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Model specific boards => Golf mk3 => Topic started by: madsb on 25 February 2013, 18:03

Title: Change AGG oxygen sensor?
Post by: madsb on 25 February 2013, 18:03

Hey guys. Just got a reading on my car saying the oxygen sensor is completely out... Hopefully that explains my sh!tty mileage...

Anyway:) , which replacement should I get? Looking for the cheapest, not original VW or Bosch or w/e. Also how many leads is it? Any guides on changing it? Appreciate any links :)

Cheers.

Title: Re: Change AGG oxygen sensor?
Post by: benvictors on 25 February 2013, 18:08

The cheapest is likely to fail on install or shortly after with something like this, even the genuine ones can be tempremental. Just one plug, sits on a bracket on top of the driver side engine mount, best off trying to un-do the sensor itself when the exhaust is still pretty warm, be careful not to burn yaslef tho  :wink:

Title: Re: Change AGG oxygen sensor?
Post by: gazpowells on 25 February 2013, 21:33

can be very tight mate and sometimes easier to remove cat and get in the vice

Title: Re: Change AGG oxygen sensor?
Post by: madsb on 26 February 2013, 07:12

Does anyone have a pic of its location? And how hard do you reckon it will be?:)

Title: Re: Change AGG oxygen sensor?
Post by: javalin on 26 February 2013, 12:18

if its not seized in, its easy enough as long as you can get under the car.  Its just before the cat, just behind the engine bay.  You'll need a set of crows-foot spanners, to get a purchase on it.

Title: Re: Change AGG oxygen sensor?
Post by: madsb on 26 February 2013, 14:40

Any specific links and info on model of oxygen sensor? How many leads? AGG engine. Cheers.

Title: Re: Change AGG oxygen sensor?
Post by: javalin on 26 February 2013, 20:17

4 wires from memory - get a bosch one, don't get a cheapo rubbish.  Mine was either £45 or £60 from memory.

Title: Re: Change AGG oxygen sensor?
Post by: madsb on 26 February 2013, 21:07

So this should fit? http://www.ebay.co.uk/itm/UNIVERSAL-LAMBDA-SENSOR-OXYGEN-SENSOR-4-WIRE-HIGH-QUALITY-/250984739999

Title: Re: Change AGG oxygen sensor?
Post by: sharki786 on 26 February 2013, 21:29

Mate like everyone has said dont get a cheapo one as it wont last. Thats a cheap one. You need to get bosch one as it will last longer. You need to buy one that has the plug on, it this dont.
Go cheap replace twice!!!

Title: Re: Change AGG oxygen sensor?
Post by: spudboy6 on 26 February 2013, 22:25

The above sensor in the link will NOT work.  When you wire it up the extra plugs / connectors alter the resistance to and from the sensor giving false readings and therefore not working putting you back to square one

Title: Re: Change AGG oxygen sensor?
Post by: madsb on 27 February 2013, 07:36

Quote from: sharki786 on 26 February 2013, 21:29

Mate like everyone has said dont get a cheapo one as it wont last. Thats a cheap one. You need to get bosch one as it will last longer. You need to buy one that has the plug on, it this dont.
Go cheap replace twice!!!

I realise it's a risk, thanks for the input :) if it fails, I'll have learned my lesson. - Regarding the plug, I guess I can just reuses the one from the existing sensor?