Question about 1997 Ford Expedition

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When resetting computer for emissions how many miles to put on drive cycle

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It is not the miles driven but the type of drivng, it must be a mixture of highway sppeds, stop and go and idle time, this in most cases takes anywhere from 20-100 miles for most drivers. go to the link below for a complete discription of the drive cycle and what u must do.

Posted on May 27, 2010

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Usually 50 to 75 will do.

Posted on May 27, 2010


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SOURCE: drive cycle for emission test

The links below should tell you exactly what you need to do.

ODB drive cycle page1
page 2
page 3
page 4
page 5

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Here is a good write up on the Ford drive Cycle

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SOURCE: how do I complete the computer diagnostics drive

alot of times when the monitors dont set its because you may have a defective coolant temp sensor or air temp sensor. Some monitors will not run if the sensors never get between 10 degrees of each other and both being under 160 degrees.
The way to check is to use a data scanner. After sitting overnight they should both be about the same temp. Or if you have a data scanner you can force the temp by heating or iceing them to get the desired results before starting the vehicle.
If you dont look at the data before you start the car you will never know if thier faulty

Posted on Apr 11, 2010

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SOURCE: replaced bad o2 sensor, reset

There really isnt a set mileage for what you need. There are certain parameters that make up what is referd to as a drive cycle and these vary by manufacturer.You can contact the service dept. of your nearest dealership for the specifics. However, If you make a few trips through out a week to include highway driving and stop and go driving those should be ready.

Posted on Feb 18, 2011

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Drive cycle for emission test

The links below should tell you exactly what you need to do.

ODB drive cycle page1
page 2
page 3
page 4
page 5

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