2000 ford taurus want pass emissions test,reset computer, how many miles should be driven to clear it.

I think you mean drive cycle not complete.
Generally the van needs to be driven 50-100 miles at both city and highway speeds. The distance needs to start when the engine is at operating temp, and the speed needs to vary including stop and go city. It does not have to be all in one trip but the engine must be warmed up first.

It has nothing to do with Miles and EVERYTHING to do with Drive Cycles.. There are certain things that must be tested. Within the first 10 miles, generally speaking you are going to complete the Drive Cycle requirements for ALL the tests except for 2-3. The EVAP/ O2 normally the last ones to get cleared.

Your Vehicle is a 1999 which means that you can pass the I/M test with 2 lights "NOT READY". The EVAP is going to take longer than a few miles, you must fill up your car with fuel above the 3/4 mark and then it has to go below I believe it is 1/2.

But if there are 2 Not Ready's... it will pass

Try disconnecting the battery for 10 minutes or go to Schucks to have them reset the MIL and clear codes.

Don't know why people tell you it has to run for hours or
be driven hundreds of miles or run relearns

All I can say, is the repair shops can't work on todays
technology

I would assume they have no data base & guess at most every
jobs, as in the past

Some repairs require a relearn the shop would look up
& do driving on the road
Takes about 15 min

Some repairs require that the codes & all data be cleared &
the car driven say 20 miles at most by you

The Evap System monitor only runs every few days
or at night when you sleep

Every vehicle is different

I guess you need that info & a new up to
speed shop

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

Nope, you just need more miles. When the car's computer has been disconnected from power (such as when the battery is unhooked), it'll set what are called "readiness codes" when power is reapplied. It takes a certain number of miles to clear these - some cars require 50 miles, some 100 miles, and some (such as some Isuzu models) need very specific drive cycles to clear them. Once the requisite number of miles have been driven without issues, the readiness codes will extinguish and your car should pass.

the computer needs to be reset by performing a code erase then drive 500 miles

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!

catalytic converter is the way to fix your problem because they do an emissions test and the code want go away even if you get the light off before you take it in they will no the computer has just been reset so which means all the sensors want have enough info to give the computer because of being reset sorry to break it to you.

take battery cable off for roughly two minutes it resets it