Your key should lock and unlock the door... It does on mine and I don't have the vacuum hooked up right now to the doors... Try both front doors and see if the key will work in the passengers side... But it sounds like you have a problem with the door lock first... First you need to take it apart and lube it and see if you can get the key to work first... then check the vacuum pump to see if you are getting anything and if you are then test the vacuum that feeds the front door... The lock definately is one of your first problems... The vacuum is second.... If you end up needing a pump just send me the part numbers and I will give you a good price... Jim

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James A. Harris