Question about 1998 Ford Explorer

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Having trouble getting catalytic converter rediness ready to take emissions test all my other monitors are ready. i have driven on highway and streets contions. I have driven 55 mph on highway for 20 minutes. stop and go contions on streets

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1 Answer

The converter is 13 years old

It won't be too effective by now,
so you may want to consider replacing it

First have a repair shop check your O2 Sensors

The front ones get replaced at 100,000 miles

The rear ones are your Monitor ones you have
an issue with. They may be shot by now

Don't always need a MIL Lamp on dash to have
worn out parts

Posted on May 25, 2011

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1 Answer

Replaced battery and BCM (reprogramed by dealer)and cleared ECM trouble codes. OBD wont acheive readiness for emissions testing even after 600+ miles. Can anything be done to complete readiness?


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Jan 13, 2016 | Cars & Trucks

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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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What's your problem? emissions not ready


****** your timing so it barely runs and have it tested again, i had to do this on a built motor i had in a pickup a while ago and it worked then. not sure if the testing standards have changed alot since but its an idea.

Mar 19, 2012 | 1998 Chevrolet S-10 Pickup

1 Answer

Not enough data in computer for emissions testing


Has the battery been disconnected, or has it gone dead? Every time the battery is disconnected, all trouble codes are cleared, the check engine light is turned off, and all system monitors are reset. For the monitors to get back to a 'ready' status, the vehicle needs to go through one or more (sometimes quite a few) drive cycles.
When you go to the emission station, they check for codes, AND also check to see how many of your monitors are in a 'ready' status. (This keeps people from disconnecting the battery, and thus clearing any trouble codes, in order to pass emission tests).
If you have not disconnected your battery for a while, but the monitors are still not showing 'ready', you need to have a qualified shop check out your computer and other electronic systems.

Aug 30, 2017 | 2001 Chevrolet S-10

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I changed the battery (May 30th) in my 2007 dakota and now i need an inspection completed. Two systems (Catalyst and O2) have not reset and i have driven 500 miles (highway and city); it is now Jun10th. ...


HAVE GARAGE CODE SCAN VECHICLE.IF YOU ARE GETTING CATALYTIC CONVERTER FAULTS OR OXYGEN SENSOR FAULT CODE.YOU HAVE FAILED SENSORS OR VACUUM LEAKS. SOMETHING IS UPSETTING THE EMISSION CONTROL SYSTEMS.

Jun 10, 2011 | 2007 Dodge Dakota Cab SLT

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On-board computer not ready for emission inspection 02 ford taurus. replaced battery 1 month ago


This is the biggest flaw in emissions testing. It takes 4 tanks of fuel and 1000 miles of wasteful driving to reset the computer on the FORD TAURUS (I've got a 2000). So much for pollution control!

Sep 14, 2009 | 2002 Ford Taurus

1 Answer

Emission rediness codes on after repair & clear


unhook the battery for about ten minutes... make sure you have the code for the radio (if required)

Feb 26, 2009 | 2001 Dodge Dakota

1 Answer

When is my 2004 rodeo due for a tune up


P0420 means Catalyst System Efficiency Below Threshold, Bank 1
It means that your catalytic converter, in the exhaust system is not working fine, as its emissions are polluting the air too much.

The catalytic converter is part of the exhaust system. The way to test this part is by doing an emission test. The two OBD codes that you are getting are already a test telling you that the converter must be replaced, unless an emission test done at a garage says the opposite.

This kind of problem will trigger the check engine light, and your car will also waste too much fuel.
You also risk to get in trouble if the car goes through an Air Pollution control, as the car won't pass an emission test in this condition.

To conclude, the Catalyst System must be replaced, the O2 Sensors are fine.

This is a repair that should be done at a garage, however you can find DIY instructions here:How to Replace a Catalytic Converter or you can get more detailed instructions, and step by step illustrated procedure purchasing a repair manual.

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1 Answer

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...


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.

Aug 07, 2008 | 1995 Toyota Tacoma

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