95 dodge dakota v8 wont pass emission test. here is readout.

15mph hc max= 88 me= 186 co max=0.45 me 0.55 no(ppm) max=508 me=1371
25mph hc max=37 me=98 co max=0.54 me= 0.15 no(ppm) max=533 me=631

anybody know whats wrong????pls help

 

try a half tank of e-85. it might run bad but it might pass. just a thought.

 

thank you

 

thank you what is e-85???

 

85% ethanol 15% gas. Depending on where you are in the country, there might not be any around you. My closest station is over 100 miles away.

there are lots of reasons to fail. bad o2 sensor, bad cat, timing is off, burning oil or antifreeze. if you still have the original cat, replace it and you will probably pass. I wish they did sniffer tests where i live. I have a car with OBD2 that fails because of a check engine light for a cat even though everything has been replaced. If they had the sniffer test in PA, it would pass with flying colors. On the OBD1 cars, if you have a cat, you pass. You could have a hollowed out cat and piles of smoke coming out of the exhaust and you would still pass.