1992 2.6L 190e has locks that only open by key on the passenger side. The masters, driver side door and trunk do not function. likely caused by DSlock thatoffers no resistance to key. Do you think it might be the vacuum pump, or do I focus on the door locks? Also, will an after-market wireless locking and ignition system work as an alternative tor rebuilding the system? Please advise. Instructions? Regards, Myron

 

When you stick the key in, will the lock turn? Most likely it's a vaccum leak, but honestly I have no idea how to fix it.