Using Cold Soak Bypass to run Evap Monitor on Fords is by far one of the easiest ways to get the Evap monitor to set to ready.
Snap-on has done an excellent job of not only adding this functional test to the scanner line-up but also incorporating data into the test. This is great because you can watch the the Canister Valve (CV) close:
20110222-1059-1.JPG
You can now watch the monitor run. In this particular case three attempts were made to run the monitor, evidenced by the CV activity in the Graph:
20110225-1053-1.jpg
That was due to the erratic activity of the FLI sensor because this was a Navigator with a bad air ride system (a real kidney shaker) which was making the fuel slosh too much to keep the monitor going. The third attempt was successful because I was able to use the whole road up avoiding dips and rough patches in the road. The monitor went ready right away on the third attempt.
I would say that one addition could be made to this test. Some instruction.
Something similar to what Ford's IDS shows in the OBD Drive Cycle instructions.
It would be rather simple to do I think. The requirements are basic. Fuel level between 15 & 85 %. IAT above 41F. Use a road that has few hills and curves and that is relatively smooth and travel at 45 to 65 MPH steady speed. There is a little more to it than that but you get the point.
Snap-on has done an excellent job of not only adding this functional test to the scanner line-up but also incorporating data into the test. This is great because you can watch the the Canister Valve (CV) close:
20110222-1059-1.JPG
You can now watch the monitor run. In this particular case three attempts were made to run the monitor, evidenced by the CV activity in the Graph:
20110225-1053-1.jpg
That was due to the erratic activity of the FLI sensor because this was a Navigator with a bad air ride system (a real kidney shaker) which was making the fuel slosh too much to keep the monitor going. The third attempt was successful because I was able to use the whole road up avoiding dips and rough patches in the road. The monitor went ready right away on the third attempt.
I would say that one addition could be made to this test. Some instruction.
Something similar to what Ford's IDS shows in the OBD Drive Cycle instructions.
It would be rather simple to do I think. The requirements are basic. Fuel level between 15 & 85 %. IAT above 41F. Use a road that has few hills and curves and that is relatively smooth and travel at 45 to 65 MPH steady speed. There is a little more to it than that but you get the point.
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