DID SMOG ON MY 1994 HONDA ACCORD FOR SECOND TIME AND FAIL THE ASM EMISSION TEST WHAT CAN DO PLEASE HELP

EMISSION TEST FAILED 15MPH RPM 1862 / %CO2 MEAS 14.2 %O2 MEAS 0.0 / HC(PPM) MAX 61/ AVE 27 - MEAS 105 / CO(%)MAX 0.51/AVE 0.10 /MEAS0.91 / NO(PPM) MAX 490 / AVE. 165 / MEAS 292 RESULTS FAILED 25MPH /RPM 1911 / %CO2 MEAS 14.2 / %O2 MEAS 0.0 / HC(PPM) MAX 36 / AVE 16 /MEAS 106 / CO (%) MAX 0.51 / AVE 0.09 / MEAS 1.00 NO (PPM) MAX 511 /AVE 126 / MEAS 116 FAILD CAN SOME PLEASE HELP ME

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Bogdan Odwazny

Honda Master 6,171 Answers
Posted on Aug 21, 2017

Bogdan Odwazny

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Any codes? any problem tune up, catalytic convener, burning oil.

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Jeremy

268 Answers
Posted on May 17, 2010

SOURCE: 1991 Honda Accord LX failed EVAP test. The ASM

Things to consider or replace...

If you are getting a Check engine Light let me know, it will make things easier to diagnose.

Catalytic Converter
Oxygen Sensor
EGR Valve

Anonymous

158 Answers
Posted on Apr 05, 2011

SOURCE: My 1997 Honda Civic failed

Jose, I don't know if this will give you the answer you are looking for because there are many things to consider here. The exhaust gas recirculation valve (EGR) is one of the main things involved in reducing NO emissions. This valve is controled by the power control module. (PCM) This is your vehicles computer. The PCM monitors the vehicles speed and will command the EGR to open when the vehicle attains a certain speed, which is why the ASM test being done is recorded at two different speeds. At 25 MPH your vehicle failed the hydrocarbon (HC) emissions limit and this could be for a number of reasons. When is the last time you car was tuned up? Old spark plugs, wires, clogged air filters, oxygen sensors, leaking injectors (personal experience) or the PCV valve could be contributing to the results of the test. I guess that the easiest way to go is to tune up the engine replacing the spark plugs, wires, air filter and the PCV valve and don't forget to have the oil changed at the same time. Only then should have the vehicle retested and see what the results are. Should it fail again you may have to consider having the EGR or the catalytic converter replaced depending on what portion of the test fails. If the NO fails I would consider the EGR. If the HC fails then I would consider the catalytic converter. Good luck with this.

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DID SMOG ON MY 1994 HONDA ACCORD FOR SECOND TIME AND FAIL THE ASM EMISSION TEST WHAT CAN DO PLEASE HELP