1999 Ford Windstar Cargo Van, 3.8, Auto The lock/unlock armrest button (on driver or passenger side) works fine for the cabin doors and the hatch These doors you can also use the key The slider you can't open with a key Of course, that's the one that doesn't work with the button There is a "child proof" thing in there but it doesn't matter what that's set on I'm getting tired of reaching my arm from the cabin through the gap in the cage to the cargo area to unlock this door It's finally above freezing so I'm going to poke around a bit Any tips or suggestions on what to look for or a fix maybe? Thank you in advance

I was curious as how can you tell when you need to replace your catalylic converter. When I had a chev camaro it was hard to accelerate and idling was ruff. Would this be the same tell tale sign for each vehicle?