I have a 97 ram 5.9 and about a week ago my engine light came on with the code po441 and i replaced the gas cap and the throttle body vac line as it was cracked, i un hooked my battery to clear the code and all was good until it turned on today, where do start?

Also the probable cause werw, loose or defective gas cap, evap canister or hose cracked not connected, purge or vent solenoid defective, vacuum leak at engine

 

Try the lines around the canister, pass side front bed... also the lines on pass fender.....Those are most likeky cracked or holes. All evap lines need inspection.

 

On the 97 the stuff mentioned above is on the driver side. Vacuum line starts at the front of the throttle body, along passenger side of engine, behind throttle body to purge solenoid on rear drivers side on throttle body, then along firewall, over brake booster, down firewall and under cab to the carbon can. All soft parts are suspect (elbows and soft line), so check them closely. As mentioned above, hard line may have a crack somewhere.

 

Thank you for the info definitely gonna look at it this weekend to try to find it