Hello and thanks for using Just Answer.I will try my best to help you with your question.
On the brake master cylinder under the hood, there is a deactivater switch for the cruise control. These are known to leak brake fluid and cause shorts. Unplug the switch and replace the fuse and see if it still blows.
Shorts that blow fuses need to be located. There is no common cause for blown fuses. I am just trying to help you isolate the problem.
Let me know if the switch stops the fuse from blowing.
Hi this is Paul I have a 1999 mercury sable. I talked to you yesterday about the fuzz blowing when the engine was running and putting the car into drive. Thanks for telling to unplug the deactivater switch for the cruise control. So far the fuzz did not blow I am going to give it one more day to be sure that the proble is cured. Thanks for your help.
You are very welcome.