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Failedsmog test due to check engine light is on, checked out all engine functions OK, smog check guy say a solenoid in the tranny needs to be changed?? solutions please??? Rich
I have a 93 mitsunishi galant. First mechanic said the vehicle's computer chip nees to be reset and told me to drive around and then it should pass. 500 niles Later the check engine light is still on. THen another mechanic said to turn off car and unplug the battery for a couple hours. BUT THAT DIDNT WORK EITHER. I'M DESPERATE IT'S BEEN OVER A MONTH I NEED MY REGISTRATION.DOES ANYONE HAVE A SOLUTION?????????I have a 93 mitsunishi galant. First mechanic said the vehicle's computer chip nees to be reset and told me to drive around and then it should pass. 500 niles Later the check engine light is still on. THen another mechanic said to turn off car and unplug the battery for a couple hours. BUT THAT DIDNT WORK EITHER. I'M DESPERATE IT'S BEEN OVER A MONTH I NEED MY REGISTRATION.DOES ANYONE HAVE A SOLUTION?????????
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This is common in the Nissan's could be the cam and crank sensor these go at around 70000 to 120000 should do both at once to be safe. that will fail an emissions test for sure. hope this helps
The smog check requires a visual inspection of your check engine light. It has to come on for a bulb check at startup to make sure it's working. But, the light must go out after starting the engine(it cannot stay on after the engine starts during a smog check). If the check engine light fails either of these two tests, the vehicle will fail the smog check inspection. You need to have the cause of your inoperative check engine light diagnosed and repaired.
The person running the test is an idiot. The OBDII test instrument is not capable of determining if there is a warning lamp failure. It is probably guessing based on voltage level, but lamp resistance does normally vary. The test is supposed to be done visually. Take it to someone else, and they will probably be more competent and pass your car.
Hello
Does the light ever come on while you are driving the vehicle? It is possible that the vehicle does not trigger the code on the key cycle when vehicle is connected to the OBDII scan tool (a cycle is the time from when a vehicle is started to the time the vehicle is turned off) you should however most of the time be able to check a vehicles trouble code history to see what may be turning the light on
Good luck
Chris
No this is not right. If you remove the battery everything resets anyways. If they are talking about relearn procedure, it should only require 50 miles. But if the light is on than either they did something wrong, created another problem, or there was already another one existing. Have the code read and let me know what it is. I'm in Ca too and used to prep european cars for smog, so I do know what I'm looking for. How did the rest do? What were the readings(if possible)?
Your modulator valve on the outside rear of the tranny may be leaking tranny fluid into the vacuum line and it it is being burnt and exhausted by the engine. The valve has a thin diaphram within and over a period of time it can leak the fluid into the line. This must be replaced before it becomes a situation where the tranny will not shift out of low gear. Thank you, Dana
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.
I have a 93 mitsunishi galant. First mechanic said the vehicle's computer chip nees to be reset and told me to drive around and then it should pass. 500 niles Later the check engine light is still on. THen another mechanic said to turn off car and unplug the battery for a couple hours. BUT THAT DIDNT WORK EITHER. I'M DESPERATE IT'S BEEN OVER A MONTH I NEED MY REGISTRATION.DOES ANYONE HAVE A SOLUTION?????????
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