2001 Mazda Tribute

Electrical problem
2001 Mazda Tribute 6 cyl Four Wheel Drive Automatic 104000 miles

2001 Mazda tribute electrical problem. I have the above car and it is giving me big problem as the battery easily runs out. The mechanic have advised change of alternator; this have been done thrice still problem persist.
Earlier he informed that he has fixed the problem; he discovered a damaged relay with its cables fused together.
The problem actually damages the alternator hence the replacement.
The battery lasts longer when I use the car without the A/C on. Once A/C is used, the battery doesn't last more than one hour.
I have also noticed there is a sound at the ignition once you match the break pedal while the key is in the ignition (idle).

May 20, 2010.

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