Help My 90 Accord Wont Pass Emissions
Honda tech/eprom hackr
Joined: Oct 2002
Posts: 1,156
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From: Sacramento, CA.
One point??? Change the oil the then... New ign. parts, cap, rotor, plugs (honda stuff would be ideal) and it should pass. Run the car for awhile on the way down to the smog test get it nice and hot.
Senior Member
Joined: Feb 2005
Posts: 128
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From: NJ
Try putting in 93 octane fuel and run it on the highway for about 30 minutes before retest. The reason is that the higher octane fuel will burn slower and release less hydrocarbons. How high were your NOx readings? From my experience, warmer temps. increase emmissons outputs, so retest on a cool day.
By the way, my 90 Accord has passed emmissons, but failed for rust on the 1/4 panels. I still can't get my car passed.
By the way, my 90 Accord has passed emmissons, but failed for rust on the 1/4 panels. I still can't get my car passed.
Honda tech/eprom hackr
Joined: Oct 2002
Posts: 1,156
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From: Sacramento, CA.
I haven't seen 93 octane fuel for awhile. Besides that the computer will adjust the timing if he puts in a higher octane and he will not get any better results..I highly doubt they check NOX in Oregon. Probably just a TSI test.
Honda tech/eprom hackr
Joined: Oct 2002
Posts: 1,156
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From: Sacramento, CA.
Originally Posted by Nirvanaspartan
trust me, get someone who will do a micky mouse job (aka automatic pass) for you for about $200, worth the money bro if you know what i mean........
Senior Member
Joined: Oct 2004
Posts: 444
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From: Atlanta Area, GA
As suggested above, do a good routine minor maintenance. Oil, plugs, etc.
Be sure your is hot before you ever take it into emissions.
A car that old you may also want to maybe look to the cat. for trouble. If you haven't ever replaced it, it could be getting glogged.... Just a thought.
Be sure your is hot before you ever take it into emissions.
A car that old you may also want to maybe look to the cat. for trouble. If you haven't ever replaced it, it could be getting glogged.... Just a thought.
bboy Wesley West
Joined: Oct 2003
Posts: 15,390
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From: six-five-o
Originally Posted by hondatech
I haven't seen 93 octane fuel for awhile. Besides that the computer will adjust the timing if he puts in a higher octane and he will not get any better results..I highly doubt they check NOX in Oregon. Probably just a TSI test.
the car is like 15 years old, why would they know how to do that? lol
but yea, if you do a basic tune-up up, it should pass with flying colors liek mine
Honda tech/eprom hackr
Joined: Oct 2002
Posts: 1,156
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From: Sacramento, CA.
Originally Posted by wedley2
i dont think they started to adjust timing until the 6th gen accords.
the car is like 15 years old, why would they know how to do that? lol
but yea, if you do a basic tune-up up, it should pass with flying colors liek mine
the car is like 15 years old, why would they know how to do that? lol
but yea, if you do a basic tune-up up, it should pass with flying colors liek mine
Let me ask you first why you think that the car does not adjust timing?
read up on basic engine performance, all engines adjust timing in one way or another to compensate for loads/fuel condition...
bboy Wesley West
Joined: Oct 2003
Posts: 15,390
Likes: 0
From: six-five-o
because ive put 91 plus octane booster in my car and have not felt any difference as opposed to 87, just that it gives me worse mileage.
i thought it was all computer based...how would the engine itself know how to adjust the timing? the only way would be computer controlled or dizzy.
but hey, i dont work on hondas for a living...and from older posts you do.
i thought it was all computer based...how would the engine itself know how to adjust the timing? the only way would be computer controlled or dizzy.
but hey, i dont work on hondas for a living...and from older posts you do.