o2 Sensor questions
o2 Sensor questions 1. Where are the front o2's compared to the rear?
2. Are there any downsides to having the o2's deleted?
3. Is it true that you must have the front o2's in order for engine to run right?
4. What is best way, if o2's are not deleted, to "waterproof" them along with the wiring?
I am having misfire issues in rain and I think it is involving my coils/injectors, but I may have to rule out the o2's before I start looking into that.
2. Are there any downsides to having the o2's deleted?
3. Is it true that you must have the front o2's in order for engine to run right?
4. What is best way, if o2's are not deleted, to "waterproof" them along with the wiring?
I am having misfire issues in rain and I think it is involving my coils/injectors, but I may have to rule out the o2's before I start looking into that.
1. They are in front of the cats as opposed to behind the cats.
2. Your check engine light will be on unless you tune the rear O2's out.
3. That is correct.
4. They should be "waterproof" from the factory as they are on all vehicles, and those are driven in the rain without issues every day.
2. Your check engine light will be on unless you tune the rear O2's out.
3. That is correct.
4. They should be "waterproof" from the factory as they are on all vehicles, and those are driven in the rain without issues every day.
1. They are in front of the cats as opposed to behind the cats.
2. Your check engine light will be on unless you tune the rear O2's out.
3. That is correct.
4. They should be "waterproof" from the factory as they are on all vehicles, and those are driven in the rain without issues every day.
2. Your check engine light will be on unless you tune the rear O2's out.
3. That is correct.
4. They should be "waterproof" from the factory as they are on all vehicles, and those are driven in the rain without issues every day.
But given that my o2's that I DO have are fronts, and I don't know when they were changed last, would it be a good idea to change them and see if that helps my misfire in the rain issue as well as just general maintenance?
It would not be a bad idea to replace them if you don't know how old they are. Are they stock, stock length with extensions, or vette length?
Good call. I will figure out the codes it was throwing. I believe last time I checked it was individual cylinders, namely on the driver side. With what you say in mind about o2 not causing certain cylinders, along with the fact that rain drips from my cowl onto my drive side coils... water at the top must be the issue. Now the question is what do I do from here? Look for bad coils, or look into the injectors or what?
Teching In
Joined: Dec 2012
Posts: 21
Likes: 0
From: Baltimore, MD
Pull codes and see what cylinder it is. When it is dry, let the engine run and spray the coils, wires, and plugs with water and see if any particular cylinder causes the problem. Pull the plug, check for cracks in the porcelin (very common on AC Delco plugs). If you have access to a coil checker check the coils for activity. The code should tell you what to look for.
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3. Is it true that you must have the front o2's in order for engine to run right?
Although it shouldn't be, plenty of people have LTs and don't have problems driving in the rain. Like others mentioned, replace them with new ones and you should be ok unless you plan on submerging your car in feet of water.
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Verdad Gallardo Technically you can run a certain tune (open loop) that does not take any o2 sensor input and can be made to run right. Obviously that's a custom tune, but if you keep having this issue that might be an option for you.
Although it shouldn't be, plenty of people have LTs and don't have problems driving in the rain. Like others mentioned, replace them with new ones and you should be ok unless you plan on submerging your car in feet of water.
Although it shouldn't be, plenty of people have LTs and don't have problems driving in the rain. Like others mentioned, replace them with new ones and you should be ok unless you plan on submerging your car in feet of water.
