bro no need to get worried.if ur talking about the central locking that ur driver's door is not operating through ur remote control,following might cud be the problems.yup i like ur car buddy its one THE OLD SCHOOL CLASSICs.thumbs up 4ur ride
1.motor that controls the door might not be working properly,th new one is for approximately 6-700 (when i got it fixed in my car it was 250 by that time 4yrs back)
2.the wire that connects the motor might be damaged.
3.or as the car is old the mechanisim might be jammed that would be needing greasing
ur problem is not more then like 2-3hrsMax
enjoy ride bro:-D