Question about 1999 Saturn SL

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I am trying to smog test my 98 saturn sl and the obdII is saying it does not have enough informaiton and to drive longer, I have driven over 50 miles and get the same message.

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That obd II is also looking for 50 key cycles ..

Posted on Jun 23, 2009

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SMOG TEST OBD-11 NOT READY


Generally speaking, the truck has to be driven at least 100 miles in various driving conditions including highway and city driving and at full operating temp. The mechanics are correct in saying there is nothing they can do to trick the system into thinking this has happened.
If 100 miles did not do it you may have to drive 2 or 3 hundred miles then try the test.
The purpose of the computer being "ready" is having used and tested all of the emission components for problems. Once the vehicle is driven far enough for the computer to use all of the components, and no trouble codes are set, the test is passed.
Even if you normally only drive in the city you still have to log 50 or 60 miles on the highway to satisfy the requirement for the engine computer.

Oct 03, 2015 | Dodge Cars & Trucks

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LOOSING COMPRESSION WHILE DRIVING WHAT IS WRONG


Its possible the main problem is the short drives you do. This is not enough for the engine to reach running temp long enough to keep the smog valves etc clean. You cannot loose compression while driving so go for a long high speed drive and watch in the mirror when you hit the throttle for lots of black smoke. If not get the smog system checked / cleaned at a garage and either change your car to a smaller engined type or do longer runs once a week.

Aug 12, 2015 | Cars & Trucks

1 Answer

Saturn codesP0000


Your vehicle is equipped with an OBD II computer AND a link to connect OBD II computer to a Smog Check Analyzer or Data Scan Tool (available
at most auto part stores).There are two types of codes, bad codes and good codes. The good codes are the "Readiness Flags". These Readiness Flags
indicate that certain emissions systems which the OBD II computer has been monitoring have PASSED the test, indicating that those systems are
working properly. Then there are the bad codes. The bad codes are actual "Trouble Code". These codes indicate that the OBD II computer
has detected a problem with in the emissions system. The Trouble Code will specifically indicate the component and problem which was found.
Newer vehicle's have very complex codes in the thousands.
"Readiness Flags" do not cause the "Check Engine" light to illuminate, but may cause a vehicle to fail the smog test.
In order to set all the proper "Readiness Flags" the OBDII system must complete at least one drive cycle (in some cases
two or three). A drive cycle is a sequence of internal tests which the OBDII computer runs while your vehicle is being driven. This insures
all emissions systems are functioning properly. Only then will your vehicle pass the smog inspection. A drive cycle usually requires one
week of driving.

Jun 10, 2014 | 2006 Saturn Vue

1 Answer

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.

Dec 04, 2013 | 1999 Saturn SL

1 Answer

2004 PT Cruiser Turbo won't pass smog test because computer monitors haven't completely reset after battery failure. It's been driven 235 miles and only 2 monitors remain unset (oxygen and


The system has to see a wide range of conditions before a smog test can be done. On most brands you have to drive at least 50 miles, at various speeds including stop and go, let it idle for 5 - 10 minutes, and run at freeway speed for at least 25 miles. It also has to reach normal operating temp of 195 degrees.

Apr 22, 2013 | 2004 Chrysler PT Cruiser

1 Answer

Insufficient data from O2 sensor for smog


To review - - after you disconnect the battery you need to drive the vehicle at highway speed for 20 - 50 miles to allow the computer to "re-learn" the data parameters. This means getting the engine up to operating temp and speeds of at least 50 mph.
If the engine does not reach operating temp some of the sensors will not be active yet.

Jun 26, 2012 | 2004 Chrysler PT Cruiser

1 Answer

Building emissions history to pass smog test


if you are failing emmissions test your evaporator canister is expired replace it and then you and your car will get a green light

Dec 31, 2011 | 2000 Ford Escort

1 Answer

Battery was disconntected to replace a connector now computer is 'not ready' and failed emissions test. driven it over 600 miles since then. Tried to follow steps to complete a 'drive...


Do you have a service engine light on or does the smog station tell you that the monitors are set?
A drive cycle won't clear a service engine light if the reason for it was not fixed. Normally a drive cycle or a 25 or so mile drive will be enough for the PCM to run through its test, and if all is well, clear the monitors.
Now some shop scanners and code readers can clear the monitors. Actron is one of the code readers that I know of that will clear monitors (the newer models. older ones did not). They are about $75 for the basic code reader and may be a worthwhile investment for the do it yourselfer.
Auto Zones also have code readers and if theirs is capable may do it for you. Though if you're in California I have heard they don't do that any longer due to people getting codes cleared just before a smog test without fixing the issue first.

Sep 09, 2011 | 2000 Saturn Ls 4dr Sedan

1 Answer

Trying to get my 1997 honda civic smogged. Replaced the knock sensor about 800 miles ago. No check engine light is on. When I try to smog it i have three things not ready - the catalyst, the evap, and...


As a rule it takes about 50 miles for the computer to finish it's readiness tests. Some take longer so I would drive it about 75 miles and then check.

Jul 25, 2011 | 1997 Honda Civic

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.

Mar 27, 2009 | 2000 Saturn SL

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