Nox
#1
Nox
Help guys 2day I went 2 get my car etested. It failed. The mechanic said my nox were 2 high everything else was fine.Otherwise everything else passed. All he said is that my nox were 2 high. I need some help 2 identify the problem.
Thanx
Thanx
#10
like zman said, high NOx readings can be result from running too lean, or a fucked up cat...usually with a reading that high, i would suggest getting either a "legit" test (easiest option), or get it properly diagnosed and get the repair cost limit if you like...
#13
I'd just pay a certified emissions repair place to fix it, they'll know what to do with the tools they have available.
I've seen lots of people change the cats with minimal effects on the emissions test results.
I'd check the spark plugs, plug wires, pcv valve, air filter, check and adjust the base timing with a timing light, check the valve adjustment.
Also make sure to take the car for a nice long drive to get the cat really hot before going for your etest. Try to get there as close to the time they'll be performing the test as possible, this will help keep your cat nice and hot to make sure its working efficiently.
I've seen lots of people change the cats with minimal effects on the emissions test results.
I'd check the spark plugs, plug wires, pcv valve, air filter, check and adjust the base timing with a timing light, check the valve adjustment.
Also make sure to take the car for a nice long drive to get the cat really hot before going for your etest. Try to get there as close to the time they'll be performing the test as possible, this will help keep your cat nice and hot to make sure its working efficiently.
#15
I'd just pay a certified emissions repair place to fix it, they'll know what to do with the tools they have available.
I've seen lots of people change the cats with minimal effects on the emissions test results.
I'd check the spark plugs, plug wires, pcv valve, air filter, check and adjust the base timing with a timing light, check the valve adjustment.
Also make sure to take the car for a nice long drive to get the cat really hot before going for your etest. Try to get there as close to the time they'll be performing the test as possible, this will help keep your cat nice and hot to make sure its working efficiently.
I've seen lots of people change the cats with minimal effects on the emissions test results.
I'd check the spark plugs, plug wires, pcv valve, air filter, check and adjust the base timing with a timing light, check the valve adjustment.
Also make sure to take the car for a nice long drive to get the cat really hot before going for your etest. Try to get there as close to the time they'll be performing the test as possible, this will help keep your cat nice and hot to make sure its working efficiently.
A Honda dealer couldn't figure out why my Accord wouldn't pass at one point. I discovered in the end that it was nothing more than a disconnected sensor. Suffice it to say that I have fairly low expectations of shops these days.
I don't doubt the experience of the average mechanic, but you will find very few good troubleshooters.
#18
who would cut the wires for the o2 sensor? why would they do that? did you not notice the check engine light on before you went for an initial test?
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