Evap p0440 - Maintenance and Repair Forum

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Evap p0440
Saturday, July 30, 2011 12:42 PM
Evap no flow during purge.. What does this mean? What do i need to test/replace?.. If i reset the pcm the code comes back in a day or two..

Re: Evap p0440
Friday, August 05, 2011 10:15 PM
check wires going to evap solenoid.

i had same code wires coming off the plug were cut/broken.
Re: Evap p0440
Saturday, August 06, 2011 9:09 AM
Well what kind of test equipment do you have, a voltmeter, a smoke machine, a power probe? We arent mind readers sorry.


- 2004 Cavalier - 124k, owned since new



Re: Evap p0440
Saturday, August 06, 2011 9:23 AM
Volt meter will do it, unless the evap line is cracked may need a fogger to check that. Prolley a wiring problem. Volt meter check for 5 volt signal.



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