HOTLNC Failed COx
- Thread starter HOTLNC
- Start date
High CO numbers are indications that your air/fuel ratio after combustion is off. Basically CO is the invisible gas left over, and if your engine isn't running properly or getting the right air/fuel ratio (due to worn plugs/dirty injectors/carbon build up on the cylinders, intake) your CO numbers will be relatively high. Merely installing new cats is just "covering up" the issue. Obviously the engine has got the miles on it, but a good tune up and cleaning (via SeaFoam) would probably do you wonders, and be a lot cheaper than new cats. Now...if you have high HC's then you're EGR valve took a dump or your cats are dead(not the animal, lol). HC's are basically unburned fuel...raw fuel.
I would suggest running SeaFoam through a few times through the year and make sure you do a MAJOR tune up and oil change before the next test. If you're running the original coil packs I would suggest changing those along with the O2 sensors.
There...my 2 cents.
I would suggest running SeaFoam through a few times through the year and make sure you do a MAJOR tune up and oil change before the next test. If you're running the original coil packs I would suggest changing those along with the O2 sensors.
There...my 2 cents.
The car is in fairly good tune, although I'm thinking I need to change out the plug wiring and plugs again. Every time I pull codes I see both left and right O2 sensor hits. One sensor is less than 3 months old and the other has about 2 years on it. But the O2 at the inspection is very low. The inspection guy told me that the car is running "hotter than normal." He suggested I try a 185 degree thermostat. That should help the COx.
He also stated that the cats are three layered and each layer handles a different pollutant. He figures my COx layer has collapsed.
10-4 on the SeaFoam. I'm a believer, now.
We'll probably keep HOTLNC for another year and then go for a high mileage riding lawnmower or something. We'll use it as a commute car to do the 80 miles per day and quit switching Lincolns every week.
He also stated that the cats are three layered and each layer handles a different pollutant. He figures my COx layer has collapsed.
10-4 on the SeaFoam. I'm a believer, now.
We'll probably keep HOTLNC for another year and then go for a high mileage riding lawnmower or something. We'll use it as a commute car to do the 80 miles per day and quit switching Lincolns every week.
Hehe...the O2 Sensors don't determine the amount of O2 during the emissions test(per se). The O2 sensors measure the air/fuel mixture of the exhaust when it leaves the engine and it signals the computer to adjust the amount of fuel supplied to the engine.
If you're getting O2 sensor codes, its probably part luck that you passed.
I told him about the O2 codes and he confirmed they existed. He then put on his big machine and monitored the system while running. The heated O2s were switching fine. He never wavered about the cats.Hehe...the O2 Sensors don't determine the amount of O2 during the emissions test(per se). The O2 sensors measure the air/fuel mixture of the exhaust when it leaves the engine and it signals the computer to adjust the amount of fuel supplied to the engine.
If you're getting O2 sensor codes, its probably part luck that you passed.
You may be right that I was able to pass at all.
Have you ever replaced the coil packs? Mine failed one time after having replaced just one side a few months earlier. Replaced the other side and it was all good again. At the time I found NAPA coils for around $35/side on an auction site.
This was around the 170k mark, they do last a long time, but maybe time if you've never done it.
This was around the 170k mark, they do last a long time, but maybe time if you've never done it.
The packs are OEM. The motor is not missing. What else should I look for?