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07-14-2006 05:42 PM #1
Need a little help passing my inspection
The NOx(PPM) levels are too high.Everything else was fine.The guy says I might need a cat. converter.I told him this one is about 3 years old,how long shoud one last?I also told him I do not drive the vehicle much,I am out of town most of the time.Drove it maybe 100 miles in the last month.He said run it on the highway and bring it back.I did also have the cheapest gas in it also.Is there any fuel additives that I can use to also help bring the leveld down?Thanks for any help http://www.gop2.com/pi_improver_gas_additive.htmlLast edited by BigTruckDriver; 07-14-2006 at 06:27 PM.
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07-14-2006 06:32 PM #2
Don't know about TX but in Il. when we didn't pass with our (other than stock)cars we'd just leaned them out and take them back worked every time.Charlie
Lovin' what I do and doing what I love
Some guys can fix broken NO ONE can fix STUPID
W8AMR
http://fishertrains94.webs.com/
Christian in training
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07-14-2006 06:40 PM #3
I guess I also could of let the vehicle fully warm up also.
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07-19-2006 11:26 AM #4
BTD, I would think that converter should last longer than that unless your running real rich.Last edited by Aster; 07-20-2006 at 07:09 AM.
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07-19-2006 11:33 AM #5
Dont buy a new converter!!
Read this article for explanation:
http://www.thirdgen.org/newdesign/ar...missions.shtml
If you can't tune it out, take it to someone who has a sniffer....they can
adjust it usually....and it is really cheap (usually).
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07-19-2006 01:21 PM #6
I've seen additives in parts stores that "guarantee" you will pass the emission tests. Never had to deal with this, so can't vouch, but maybe worth a try.
Don
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07-19-2006 07:03 PM #7
I don't have anything that needs it at this time, but I've used that "RXP" stuff and I really believe it works. I have bought it at O'Reilly (sp?) and Quik Kar in the past. It comes in a little dinky bottle about the size of those little bottles of liquor you used to pay too much for on airplanes. It cost several dollars a few years back. I don't know how much they'll soak you now.
Jim
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07-23-2006 10:05 PM #8
Originally Posted by AsterLast edited by BigTruckDriver; 07-23-2006 at 10:14 PM.
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07-24-2006 07:45 AM #9
The 3 things that will raise Nox are, 1,an overheating engine, 2, an EGR system that is not working, 3, a dead Cat....I can tell ya from experiance that the egr system is the biggest culprit but with that being said the second biggest culprit are those cheapy aftermarket cats most will only get you by for 2 to 3 years...Also advanced ignition timing will raise Nox
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07-24-2006 07:55 AM #10
BTD, you need to have it checked. Sounds like something is wrong and you don't want to mess around with cc's. Good luck.
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07-24-2006 03:11 PM #11
The cat is one of those cheapy ones from auto zone.I am going to replace with another and change the oil,plugs,rotor,cap,and wires.The motor has about 200 thousand miles,maybe I will just do a rebuild and go from there.I thought the motor was doing pretty good though ,just a little puff of smoke at start up,but drives GOOD ,and gas mileage is fine. Anyone have a link for a good compression tester.I need a good quality one.I think I need to check the compression before I go any further.
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07-24-2006 03:30 PM #12
Waste of time to check compression if all ya failed on was NOx.. besides with 200k it's worn out, but who cares long as it runs decent. Do not just throw money at it by replacing the Cat, first check or have checked the egr system.
"very inexpensive to have the egr checked " If it's o.k. then put a Cat on it..
I am an emissions specialist and it amazes me how much money folks waste on their own or with unlicensed repair shops trying to get through Missouri's test.
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07-24-2006 03:38 PM #13
Why sit there and worry about what is wrong? Take it to an emissions technician who can, in probably five minutes, tell you what is wrong and probably make adjustments so you can pass with a smile......money well spent AND less than a converter cost.
mike in tucson
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07-24-2006 03:42 PM #14
What work should I ask to be performed ?Will the local pep boys do the work?
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07-24-2006 03:46 PM #15
OK I'm new here but if your running a cat on the car /truck (more info on what your running would help ) do you have o2 sensors on the motor also ?
if you do and there over 75,000 miles they will cause a load of problems
jeff
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