Cat installed after all four O2 sensors?
12-31-08, 06:03 PM
#1
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Cat installed after all four O2 sensors?
Well I bought a 92 LS400 and I noticed that the two stock cats have been removed and and pipes welded in its place. Now there is a cat but it is just one and is installed in the middle of the exhaust system I believe a resonator used to go there.
I am just wondering if that is okay or not. I have been told on OBD I cars the rear O2 sensors really don't affect it anyways but don't know how reliable that was. I am getting the car smogged soon and don't want to waste money if this will cause it to fail anyways.
Oh I am not pulling an engine light as of right now but than again where is the CEL located? Maybe mine is burnt out that's why I can't find it because even with just the key in shouldn't there be some sort of CEL as like a test?
Thanks in advance
I am just wondering if that is okay or not. I have been told on OBD I cars the rear O2 sensors really don't affect it anyways but don't know how reliable that was. I am getting the car smogged soon and don't want to waste money if this will cause it to fail anyways.
Oh I am not pulling an engine light as of right now but than again where is the CEL located? Maybe mine is burnt out that's why I can't find it because even with just the key in shouldn't there be some sort of CEL as like a test?
Thanks in advance
12-31-08, 06:23 PM
#2
If all else in the engine is running fine, the emissions test may not show the removed cats. I'm suspicious and would suspect you will get higher readings on the rollers. It will obviously fail the visual and constitute a modified system. You won't be given a break on repairs since it has been willfully modded.
Who did you buy the car from? The seller is usually supposed to do the smog unless you agreed otherwise. My suggestion especially in Cali is get the cats and O2 sensors put in before you smog it. If you take the gamble and it is caught by the inspection station, the report will be on file. You won't be able to register the car until all is fixed and passes. This will be $$.
The legit inspection stations all have looked under my cars to verify the system.
Who did you buy the car from? The seller is usually supposed to do the smog unless you agreed otherwise. My suggestion especially in Cali is get the cats and O2 sensors put in before you smog it. If you take the gamble and it is caught by the inspection station, the report will be on file. You won't be able to register the car until all is fixed and passes. This will be $$.
The legit inspection stations all have looked under my cars to verify the system.
01-01-09, 11:56 AM
#5
If the car has a test pipe in the space and the bung holes for the O2 sensors are still there, any good muffler shop will be able to put in good cats. That will be the least expensive route. There are posts around here where to buy the O2 sensors. Now if they removed the O2 portion of the pipe...
There are a few threads on good muffler shops in So. Cal section, you'll have to do a search:
https://www.clublexus.com/forums/cl-...alifornia-149/
There are a few threads on good muffler shops in So. Cal section, you'll have to do a search:
https://www.clublexus.com/forums/cl-...alifornia-149/
01-01-09, 02:28 PM
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If the car has a test pipe in the space and the bung holes for the O2 sensors are still there, any good muffler shop will be able to put in good cats. That will be the least expensive route. There are posts around here where to buy the O2 sensors. Now if they removed the O2 portion of the pipe...
There are a few threads on good muffler shops in So. Cal section, you'll have to do a search:
https://www.clublexus.com/forums/cl-...alifornia-149/
There are a few threads on good muffler shops in So. Cal section, you'll have to do a search:
https://www.clublexus.com/forums/cl-...alifornia-149/
01-01-09, 02:51 PM
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Actually lets just say it passes the visual should I be able to pass with all O2 sensors before the cat? I hate to sound cheap but i am so broke because of the holidays
Last edited by jdmSRT; 01-01-09 at 03:07 PM.
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