Hello Everyone, I have a 1998 Chevrolet Lumina with a 3.1L 3100 V6. I have been getting a Check engine light and read it with a scanner. I am getting (P0440 "Evap emission Control System Malfuntion" and P0171 "System Too Lean *bank 1)" I have already pulled the Mass air Flow sensor to get cleaned by using MAF spray cleaner because of P0171. What i wanted to know is in my case would it be best to first replace the "Canister Purge Solenoid" before breaking down and replacing the charcoal canister? The car is running rough and want to know the best way to remedy the problem. I have listed the Freeze data at the bottom if it will help diagnose the issue.
DTC That caused Freeze Frame: P0440
Throttle Position 9.4%
Engine RPM 1473 RPM
Load value 7.0%
Map Sensor 55 KPA
Coolant Temp 192 F
Short Term Fuel Trim1 7.8%
Long term fuel Trim 1 18.7%
Short term Fule trim3 -86.6%
Long term fule trim 3 -17.4%
Fuel system 1 Closed
Fuel system 2 n/a
Thanks in advance guys i love the site and information it provides!!!!
