GolfGTIforum.co.uk
Model specific boards => Golf mk3 => Topic started by: bluquarta on 09 May 2012, 15:45
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how hard is it to replace a lambda on an AGG?
Do you have to take the exhaust off? anyone do me a quick walkthrough?
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you'll be lucky if its not rusted solid dude...... ive not yet done one where i havent either had to drill out & weld in a new lambda bung, or retap the thread.......
heres how i do it... there may be a million varaiations but this is mine,
before i raise the ramp i unplug the lambda,
raise ramp
unclip the cable & make a note of where it goes for refitting,
thread box spanner, or swan neck ring spanner through cable & undo....... I have the luxury of a lambda socket, however, this does tend to open up an sometimes slip so i prefer the above spanners.......
its at this point you will fight hammer & nail, skin your knuckles, resort to heating & bashing the old lambda untill its free.....
inspect thread, if all is well...
refit new one....
i wish you the best of luck.....
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As dogbot says can be an absolute pig,but did one on a mk4 not long ago and was a doddle ,good luck
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cheers for replies. Hopefully wont be to bad as exhaust system and the lambda are only a year old. Wont buy a cheap one this time, bosch all the way!
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Will be worth putting some copper slip on the new one in case you have to take it off again :smiley:
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Quick tip, warm the car up first, if it is hot, it will come out much easier, just be carefull
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Got a genuine one here. Been used for about a month from new. ;)
Another tip if it's tight, as long as you have a new one is just snap the top off the old one and use a deep socket. :wink:
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Quick tip, warm the car up first, if it is hot, it will come out much easier, just be carefull
+1 for this. I thought they HAD to be done at normal operating temp?
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Easy enough - as above, but make sure you have a decent collection of spanners, as its quite a restricted fit under there.
I used crowsfeet to get it loose when I did mine, as they go onto a socket extension and thus don't need the space a spanner does.
James
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Quick tip, warm the car up first, if it is hot, it will come out much easier, just be carefull
+1 for this. I thought they HAD to be done at normal operating temp?
+2 If you try it cold, damage is likely to occur as the sensor will probably be stuck solid.
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Never had one stuck in a genuine VW MK3 cat personally.