almost passed emissions
#1
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Join Date: Jun 2015
Location: Thornton, CO
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Car: 1987 irocz28
Engine: 305 tpi
Transmission: t5 5 speed
Axle/Gears: GU4 3.08 g80
almost passed emissions
New cat helped got a 1.86 on hc limits are 2.5 1.62 on nox limits are 4.0 but my co was 45.1539 and limits are 20 can that be the oxygen sensor bout thw only thing i havent replaced
#2
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Re: almost passed emissions
Oooops, u said CO! OK high CO is dirty air filter or bad O2 sensor. A scan can look at your O2 numbers and u can see any problems w/fueling or sloppy O2 output. Anyways the O2 sensor is a normal wear part - should be changed bout the time u change brakes or tires.
Last edited by cardo0; 01-16-2016 at 09:00 PM.
#3
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Car: 1987 irocz28
Engine: 305 tpi
Transmission: t5 5 speed
Axle/Gears: GU4 3.08 g80
Re: almost passed emissions
Wow it should be changed that often i will remember that. I went ahead and got a bosch one yesterday the one that was on there was a tgk japan and was smaller then a spark plug. It was solid black with a thick layer of carbon all over it. I took my air filters out for the test because no one has them in stock put them back in after the test i ordered some but wont be here till tuesday when i retake test. Car runs better now and keeps getting smoother on the throttle. The guy i bought it from didnt have to do emissions so i guess he took that as not having to do anything at all.
#4
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Re: almost passed emissions
Glad to read the good news. Once u get the a/c replaced let us know what your smog test results are - it helps us all.
#5
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Car: 1987 irocz28
Engine: 305 tpi
Transmission: t5 5 speed
Axle/Gears: GU4 3.08 g80
Re: almost passed emissions
I PASSED! So I replaced the o2 sensor and got it by. So for the results hc-2.20 limit 2.5 co-17.47 limit 20.00 nox-2.11 limit 4.00 not sure why my hc and nod increased but the most important thing is I dont have anything to worry about for 2 years.
#6
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Car: 1987 irocz28
Engine: 305 tpi
Transmission: t5 5 speed
Axle/Gears: GU4 3.08 g80
Re: almost passed emissions
Parts list that I replace
Smog pump
Air checkvales
Catylitic converter
Spark plugs
Things I did
Oil change
Tps adjustment
Iac adjustment
Prayed lol
Smog pump
Air checkvales
Catylitic converter
Spark plugs
Things I did
Oil change
Tps adjustment
Iac adjustment
Prayed lol
#7
Member
Re: almost passed emissions
Thats awsome racer! U got a lot of good experience out that smog test.
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