Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: Shelby on 18 July 2011, 18:57:45
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Anyone have any useful hints and tips for removing the lambda sensor (2.0 litre) and the exhaust mounting bolt that is next to it?
I just can't shift the sensor bolt and the mount bolt next to it has a nut on the end that I can only assume is supposed to be welded to the inside of the bracket it is on, so the nut screws into it. However, it isn't attached so when I turn the bolt it just turns the nut aswell, the nut is round edged so can not get another spanner on it to hold it and is in a very confined space also.
These are the only bits I need to get off now to put a new cat on and having a bit of a drama with them.
Any thoughts?
Cheers
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Spent ages trying to remove a V6 lamda on Saturday. In the end, had to admit defeat :-[
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Not looking good based on that. I need to get this done and in for a retest to get through MOT before Friday, as we are supposed to be going away camping for a week on Saturday!
Really short on cash aswell (get paid Friday) and could do without having to replace a working sensor >:( damn annoying.
I can probably get round the mount issue by just cutting it off, the sensor is the main problem.
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Yep, can be a right pain. I've failed on the only one I've ever tried. Right tool and probably blow-torch heat may have helped. May as well have been welded in for all the effect I had on trying to remove it.
Might be a good time to read some stuff about how lambda sensors don't last forever, and are likely to give reduced economy as they 'tire'; bite the bullet and buy a new one.
For the unstuck captive nut, can you cut the bolt, then replace with bolt and normal nut?
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I do have a little blow torch so might give it a bit of a heat up tomorrow and see how it goes.
As for the nut, will probably angle grind the nut and/or the bracket off, not a problem how much it gets wrecked on the exhaust side as its being replaced anyway, just need to keep the engine mount side intact for obvious reasons.
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can you not take the exhaust off with lamda attached disconnect plug and take it to exhaust centre/garage and ask them to heat and remove it. done this in the past with broken manifold studs etc
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Well, managed to get the cat section off last night. Had to angle grind the mount off the exhaust but at least I can get to the shot bolt now.
As for taking it to a garage to get it removed, a good point. However, the problem I have is time as I can't afford to take time off work to do the job and I need it done by Friday to get it in for a retest (car needed to go away camping on Saturday)!
Im going to order a replacement sensor today with next day delivery, then I can put the new pipe on tonight and just have the sensor to do on Thursday. Ill still try and get the old one out and will keep it as a spare if nothing else.
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Well, took the remove cat down to kwikfit this evening and they got the sensor off in about 5 mins lol.
Have fitted the new cat with the lambda sensor and will be putting it in for a retest tomorrow .... fingers crossed.
The offending articles >:(
(http://imageshack.us/photo/my-images/854/20072011222.jpg/)
(http://imageshack.us/photo/my-images/705/20072011223.jpg/)
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I've never failed to remove lambda's and have always removed them when the exhaust has been stone cold, I did one today on a 1.8 Vectra that was particularly stubborn, I had to resort to a big adjustable and a lump hammer but it still came off in a usable state...
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best way I've found to remove lambda sensors is with a BIG pair of self-tightening pliers.
..... and the worst way is with WD-40 or the like. Silicone causes instant death to lambda sensors. irrepairable
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lol I have a very very old whitworth spanner that fits lamda sensors perfectly!!! its never failed to shift one in all the years ive been changing them!! you can keep your metric stuff!!! ;D