Question about 1995 Toyota Tacoma

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What does it takes for a toyota tacoma 2000 v6 to complete the rediness test, not showing cat and evap been completed. fail smog test because the rediness test is not completed but the emissions levels were ok.

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It needs a "drive cycle". Start & run it, highway speeds, and then pull over & idle several times, then do city traffic "stop & go" driving, and then sustained highway speeds again. This completes the readiness thest and satisfys all of the monitors.

Posted on Sep 09, 2008

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It is an ongoing test, and is in a constant monitor mode. What is the problem you have, system not ready on a smog test?

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1 Answer

What is the drive cycle computer rest for 2010 corolla


drive cycle, why not just forget that. I do. (mostly)
why>?
what do I do, i reset the PCM with my $10 scan tool
when dont, all monitors are now reset, ALL !

drive cycles to finish off all monitors? (a goal for say smog testing)

that is easy most clear fast. running fast.
but not EVAP, can take up to 30min but
if fuel tank is fuel, it never completes EVAP until 1/4 lower, 3/4 full and less.
EGR tests? can be easy if you drive fast, and then coast to a stop
both tests cleared. (sans complete)
monitors are (no appliclable, not ready or complete)
to do smog, all must be complete and no DTCs. (rare exceptions)

the drive cycle means number of times it takes to set a code for one test monitor or clear one.
some newer cars take 2 drives to set them.
and is important, the FSM covers this.
why not post symptoms or reasons for asking.

just curious?, then read the ASE book on OBD2 technology.

alldata.com RTM.

Oct 10, 2014 | 2010 Toyota Corolla

1 Answer

Evap and cat converter monitor not showing ready when trying to smog 2001 daewoo nubira


you hav'nt mentioned the car, but i'd get the OBD codes read as will show which sensor/switch is at fault

Jul 04, 2014 | Daewoo Nubira Cars & Trucks

1 Answer

Smog failure High HC's only issue


Hydrocarbons (HCs) are unburned fuel. You may need to replace sparkplugs and wires, if this has been done or doesn't fix the problem you catalytic converter may be worn out.

Apr 17, 2014 | 1997 Toyota Tacoma

1 Answer

Failed MEAS


wow, no context but i can read your mind?
ok SMOG failed. right?
what speed, there are 2 in uSA, 15 and 25.mph.
so there are 3 tests, which one. all are PPM in usa.
parts per million.
but is that HC , CO, or NOX? or ?

based on your numbers is HC
hydrocarbons or in barstool, its raw gasoline leaving rear of car.
unburned fuel..

572 ppm is way too high 12-19 is normal
id say the CAT is bad.
but can be , engine is bad, and burned out the cat.
that is why all savvy mechanics, check the that the engines
holds closed loop status, (EFI closed loop) at the speed yours failed.
if not in closed loop the cat will burn up (rich)
that is first.
Once that is cured. you check HC again. if out of spec
you did burn up the can , new cat time.

that is the correct way.

Feb 19, 2014 | 1998 Toyota Tacoma

1 Answer

Not passing smog, no code or engine light


Its going to be tough to find the problem without access to a 4 gas machine. Especially if there are no trouble codes in the computer.
If the fuel mixture is rich it should set a code for one or both O2 sensors. Same thing if the EGR is not working, etc.
One thing that could cause problems is the thermostat not getting the engine up to normal temp.

Jan 29, 2013 | 2000 Toyota Tacoma PreRunner

3 Answers

Is a cold air in-take kit for a 05 Tacoma worth the expense?


i dont belive so. they are basicly for looks.

Sep 30, 2009 | 2005 Toyota Tacoma

1 Answer

Prerunner wont pass smog due to engine service light


Not positive on this so consider only. The o2 sensor is what actually tells everything else what is going on with emmission and everything else adjusts to what info it relays. The o2 is also subjected to extreme temps and cooling cycles. So, instead of spending money on no answer diagnostism give replacement of o3 sensor so consideratio. If you choose to replace, wd40 and let exhaust cool down. Good Luck.

May 07, 2009 | 2000 Toyota Tacoma PreRunner

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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