2001 Mitsubishi Galant es will not pass smog test/ it shows 2 monitors, can have only 1

Yes, but you must do it through the fuel rail (can't just stick a hose in the fill hose as there is a wire designed to prevent this very thing.)

Heres a YouTube video describing how to do this.

https://youtu.be/WfEFA_sVIt8

Can you make your self more clear? Thank you -Will

change your oil and oil filter. Add a bottle of octane boost to the fuel tank then top off with fuel. Drive vehicle for about twenty minutes then have emissions tested. Unless you have a bad catalytic converter, you should pass emissions.

What coloure is the wire that ignite the ecu

How many miles since the failure to pass ?

check for vacum leak if not ckeck ide air controll

look for weak valve springs.

i am not a mechanic but an alternator should have nothing to do with smog it is the exhaust system not the eletrical system hope this clarifies things regards Jim

Drive the car for 2 miles non-stop and take it to smog inspection WITH OUT TURNING OFF THE CAR!! the key is that the car goes threw the test while the engine is running ...

if the car is turned off ... u will have to repeat procedure ...

Some vehicles require very specific drive cycles (called "drive traces" if you perform them on a road simulator or dyno) to activate certain self-checks like the catalyst and EVAP monitors. As a general rule, doing some stop-and-go driving around town at speeds up to about 30 mph followed by five to seven minutes of steady 55 mph highway speed driving will usually set most or all of the monitors. Consequently, if you're checking an OBD II system and discover that one or more of the monitors have not run, it may be necessary to test drive the vehicle to set the remaining monitors.

You should talk to a good emission tec, if this is not throwing a code, it is hard to say if that one of the components could be bad. O2,pump,convert, HeO2, every part of the emission system.

With a 1000 miles, and doing what is says above just before the test, and ending driving at the test
should be plenty. If it is not, you will have to have each emission part checked, or when the computer
is plugged in it might show a code that did not trip dash light.