Question about 2000 Saturn SL

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2000 Saturn SL2 won't pass smog test

I took my car to get it smogged and it failed. I took the car to a repair shop and they said that my car is burning too much gas and it plugged up the catalytic converter and melted it completely. They said that my car never heats up and even after running a while the hoses are still cold. What could be causing this?

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  • zipddoda Nov 13, 2008

    I don't know yet if that will work. I have to wait for my next paycheck before bringing back to the shop.

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Where is the thermostat located on a 2000 saturn sl

Posted on Dec 29, 2008

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It could be as simple as a bad thermostat (stuck open), that's causing the car to not warm up, which would be one reason it's burning too much gas (running cold, not reaching operating temp. which would allow the engine to run efficiently). Did the garage mention the thermostat as a possibility? Remove the thermostat to see if it's in the open position (should be closed @ room temp.) Let me know what u find.

Posted on Nov 10, 2008

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Why does my car **** and hesitate and has failed smog 2X is now a gross polluter ?


Because you failed to have a shop look at the data
& make the required repairs & get caught up on preventative
maintenance BEFORE you went to inspection

If you were in fact at a shop, for any reason,then they have no idea
how to test vehicle

Have you considered the motor is shot & you have leaking valves?

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Won't pass smog when it should...


Just because the car seems to run well, does not mean the emissions are within spec. For example, you could be running a little rich and the car will start and run great, but the exhaust is not within code.
What you can do is take it to a "smog shop", that is a repair shop with the proper equipment to diagnose the problem. If the testing is simply the reading of the on board computer codes, then most any place can read those, but you need an experinced mech to know what to do about it. May need an exhaust gas analyzer to physically sample and analyse the gasses. For the actual test, as long as the computer says all is fine, usually, you're good to go.
If the computer looses power any saved run data will be lost and must be re-accumulated to pass the smog test. A few hours to a day is usually enough run time to accumulate enough data.

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1 Answer

Won't pass smog test


There are litteraly hundreds of things that can cause you to fail a smog test. Your question is too vague.

Jan 21, 2011 | 1997 Saturn SL

1 Answer

2000 Saturn SL2 fails smog due to failure of OBD Self test


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.

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Failed Smog: Have VIR report, Need Insight:95 Jeep Grand Cherokee


Change the oil, run the car until it is really hot (the cat converter) and it should pass, did smogs for 30 years, this usually works.

Dec 10, 2008 | 1993 Saturn SL2

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Jetta failing smog due to non communication with OBD - Suggestions?


the no data error can be contributed to a bad interface cable or the scaqn tool was configured wrong and therfore could not connect to the ecm. I would recommend having a scan done again by a certiefied volkswagon tech chances are the mechanics used the wrong adapter cable or reader card. your smog problem could be that your evap canister is clogged therfore gives a bad reading.unfortunately you have to have a scan done but try an independant small shop that delas exclusively with foreign cars such as porche andd mercedez. the will have the correct scan tool and will be much cheaper than a dealership. your cost should be no more than 50 dollars US ... please rate this. thanks

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