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1999 Other Mercury Models Dying for no reason

Tiny
COREIBEAN
  • MEMBER
  • 1999 MERCURY
Electrical problem
1999 Other Mercury Models V8 Automatic 121000 miles

Several times in the past few weeks I have had all the dash baord lights and stuff shut off in my car while drivivng. It runs excelent when this isn't happening. I have the battery and allternator tested and they are reaaly good. We can not figure out what the problem could possibly be.
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Saturday, October 10th, 2009 AT 3:23 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Has the check engine light come on? Also, have you checked fuel pump pressure? Finally, does the car start right back up when this happens?
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Sunday, October 11th, 2009 AT 1:14 AM
Tiny
COREIBEAN
  • MEMBER
  • 2 POSTS
It doesn't start right back up, it has to be jumped. The check engine light is not on. What pump pressure?
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Sunday, October 11th, 2009 AT 2:58 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Sorry I had so many questions. I'm just trying to eliminate some things. I was refering to the fuel pump pressure, but this sounds more electrical. First, we need to start at the power source. Are the battery terminals clean and tight? Also, check the ground to the engine block, positive to the starter, and the condition of the battery cables themself. For everthing to shut down, you are loosing total connection at some point.

Let me know what you find. Also, will it only start when it is jumped?
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Sunday, October 11th, 2009 AT 8:34 PM

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