This is the latest....

This was the 1st code my 2001 blazer threw out

P0440 Evaporative Emission Purge Control Solenoid Damaged.

This is the 2nd code my 2001 blazer threw out (I have gotten this code 4 or 5 times so far)

P0446 Evaporative Emission Control System Vent Control malfunction.

OLD PROBLEMS
1. I replaced the gas cap. Got it at Autozone. Worked for 2 weeks then "Check Engine Light" Came back on

2. I also replaced the Purge Valve. Worked for 1 day. then "Check Engine Light" Came back on. I got the code removed from the computer. It was this code again. What could be causing the "Check Engine Light"to keep itcomingback on?

NEW PROBLEM
The NEW Vapor Canister Purge Valve won’t work with the current set up on the truck. The old Vapor Canister Purge Valve looks to be a little longer than the new one. Do I need to purchase a NEW hose for the NEW Vapor Canister Purge Valve? Any Help would be appreciated
I can try to send pic of the (2) different looking ones.

Any ideas?

Kevin From Shelton
Quinnman105

 

same thing with my 97 until recently.. P0440 came on one day.. scanned it.. went toAUTOZONE and replaced the gas cap.. reset the computer.. came back in 30 miles.. changed the fuel pressure sensor, and both the front and rear solenoids.. and still came on after 30 miles like clockwork.. getting really annoyed.. i changed the vacum lines.. and i mean all of them to the canister and all... still after 30 miles it came on... until one day last friday i went to put gas in the Truck.. Well after i removed the cap i could not install it back on.. I thought someone switched it as a practical joke.. Well upon closer inspection i noticed the flange on the cap actually swelled. YES swelled... went to PartsAmerica and purchased a Stant replacement cap and wholla... Light goes off.. was i pissed.. brought the cap to AUtozone and find out the cap is made by Duralast.. transalation CHEAP CHINESE KNOCKOFF.... learned a big lesson... I will eventually replace it with a factory one.......... hope this is your reason.