Evap drive cycle

[Pcleaners2]

The evap drive cycle takes the longest. I can’t get it to run the test after driving it 25 miles a night the last four nights . Fuel has been about 30% in tank whole time. Maybe it need more than 50%. I’m sure this has been posted before but couldn’t find ? Or if someone can point to the right post for me to follow.

 

[John Scoggins]

Might need to add some fule just to make sure the level is between 15% and 80%, but there are a few other parameters"

1. ambient temperature between 40F and 90F for .040 leak and between 40F and 85F for .020 leak
2. engine coolant temperature within 10F to 18F of ambient
3. battery voltage between 10 and 15
4. fuel level between 15 and 80%
5. MAP reading 22 in Hg or above
6. No stall during test

Essentially it test on cold start when fuel level is between 15 and 80 percent

 

[John Scoggins]

Here is the section from the manual, look at page 7 for the exact conditions.

 

[Pcleaners2]

It passed after following the Chrysler evap drive cycle with over 50% gas. Do trace 1 on the way to work and trace 2 after you get off work(6-8 hr later) . Should work for all . Hopefully it helps someone

 

[imactj2004]

would a faulty MAP sensor prevent the drive cycle? Im not getting any codes thrown but Ive now gone through three tanks of gas and at least 10 attempts to match the conditions for the cycle test but still have flashing EVA.

 

[imactj2004]

Might need to add some fule just to make sure the level is between 15% and 80%, but there are a few other parameters"

1. ambient temperature between 40F and 90F for .040 leak and between 40F and 85F for .020 leak
2. engine coolant temperature within 10F to 18F of ambient
3. battery voltage between 10 and 15
4. fuel level between 15 and 80%
5. MAP reading 22 in Hg or above
6. No stall during test

Essentially it test on cold start when fuel level is between 15 and 80 percent

Does #5 (Map Reading 22 or abvoe) apply

• at ignition on, but engine off
• at idle
• or at running speed

Asking because I'm at about 12 with igniition on, between 12-14 while driving, and can only get to 22 when I'm accelerating. So its never at 22 more than a few seconds.