Can't remove Lambda sensor

[5907]

Tried to remove the Lambda sensor on the W124 today, but it is stuck solid. Tried Penetrating fluid a few times but no success.

I cut the wires to try and get a closed ended socket on there, but that didn't work.

Any suggestions, or should I take it to a garage and ask them to loosen it?

I'm now driving around with no Lambda sensor; I have a correct replacement here but obviously cannot fit it.

 

[C180 Chris]

Have you tried heating it up with a torch?

 

[5907]

Have you tried heating it up with a torch?

No, but I've tried that in the past with sump plugs; didn't work.

 

[pault8084]

That's all you can do.Get the surrounding exhaust red hot and get a socket and big half inch bar and hope it doesn't pull threads out the pipe

 

[LYNALL]

Heat it up red hot then walk away for 1/2 hour then undo it if you try to undo it whilst red hot you will probably pull the threads out.



Lynall

 

[television]

The plumbers cans of freezer work the same way as heating, it is shock that releases the grip on the threads, doing up a touch first often works, as it relieves the pressure on the threads

 

[5907]

It's booked in at a local (ish) Mercedes specialist tomorrow to have the new Lambda fitted, since I don't have the equipment to get it hot enough to remove the old one.

 

[television]

Many components can be difficult unless you are doing it all day long, there are times when its best left to a garage that knows and has done the job before, so why not