P0442 Code fun

[blacknome]

I have been battling a P0442 code in wifeys Impala for a year now. I changed the Evap Valve with a used unit then a new one. Changed the gas cap and the code always returns.

Now the van has been tripping the P0442 code as well. All I have done so far is replaced the gas cap and re-set the code ( it returns within 30 mins of driving ). I looked at the fuel overflow and it looks solid enough

Any suggestions for either vehicle ?? I need to run it thru emissions testing before July and they won't pass it with any emissions trouble codes

[MountainManJoe]

http://www.obd-codes.com/p0442

Read under "Causes"

[LiftedAWDAstro]

You could also take it to a a shop that has a smoke injector machine. They can find the leak with that. We had to do it on our 2005 Trailblazer we had.

[blacknome]

yeah, I will have to do something. What are the chances that the 2 vehicles that require emissions testing both have the same fault codes and that it's something I can't figure out ?