EGT Sensor Removal - Hot Or Cold?

[DanZac]

I've got a pre turbo Exhaust Temperature Sensor to change on my Van which has probably been there for the 18 years the vans been on the road. I can just about get my finger tips to it, which means it's going to be a socket on an extension and hope and prey that it comes undone job.

The question for you wise people is, do I want to get it as hot as possible before I try to undo it, or am I better off going for it cold?

I'm guessing the hotter the better, but whats the perceived wisdom? The last thing I want to be doing is stripping half the engine to get at the manifold when it snaps off or strips the threads.

 

[dobbslc]

Got it hot then work the socket back and forth to break it loose.
Worked well on my son's O2 sensor on his exhaust manifold.

 

[BrokenBiker]

definitely hot, and take your time, try and ease it out, every time you get it to turn a bit, work it back in to sort of clear any crud from the threads

 

[roofman]

I've got a pre turbo Exhaust Temperature Sensor to change on my Van which has probably been there for the 18 years the vans been on the road. I can just about get my finger tips to it, which means it's going to be a socket on an extension and hope and prey that it comes undone job.

The question for you wise people is, do I want to get it as hot as possible before I try to undo it, or am I better off going for it cold?

I'm guessing the hotter the better, but whats the perceived wisdom? The last thing I want to be doing is stripping half the engine to get at the manifold when it snaps off or strips the threads.

Hot...any O2 been in that long risks taking the pipe threads with it getting it out, good luck

 

[RWD3M]

Also, don't be afraid to get some penetrating oil in there as you are working it.

 

[bert]

Last exhaust sensor I did was just after a 20 mile drive so nice and hot. Cane straight out after being in there for 12 years

 

[DanZac]

Cheers guys. I think that's a pretty conclusive vote for hot then.

I'll report back in a few days when I've had a crack at it and you can all laugh at my struggles when it snaps off and then strips the threads out of the manifold.