Car Questions

Clear all

[Solved] Diagnosis on Evap Code on a 4th Gen Trans Am


Topic starter

I have a 1997 Pontiac Firebird Trans Am 6 speed manual transmission with 105000 miles.  I had a bad evap purge solenoid and it was causing a P1441 Evaporative Emission Control System Continuous Open Purge Flow and P0300 Random/Multiple Cylinder Misfire Detected.  I replaced the evap/vapor canister purge solenoid and the vacuum/purge valve switch for good measure since it was connected to the solenoid.  It solved those codes, however it brought another: P0441 EVAP System Incorrect Purge Flow.  I noticed when I replaced the evap solenoid and switch that there was loose black pebbles in them.  I dug around lt1 forums and one suspected that it could be a busted charcoal canister.  Yet, I am still trying to diagnose this before I make a decision.  Should I replace the charcoal canister and see what happens?

Topic Tags
2 Answers

What about hoses?

I checked the hoses and it everything is connected properly. Now if they are clogged I dont know. It doesn't seem like it.

You cannot know because you can't see inside.

Hey I just wanted to let you know I solved all my Evap system problems. It wasnt clogged thank God but I had to replace all 4 parts to my evap system especially the charcoal canister. Thank you

Posted by: @noble-firebird

Should I replace the charcoal canister