1989 Mercury Grand Marquis Support Question
1989 Mercury Grand Marquis Support Question
Find answers below for this question about 1989 Mercury Grand Marquis.Question posted by Anonymous-88045 on December 8th, 2012
Power Loss
what can cause my battery to dran besides bd altrenator
Current Answers
Answer #1: Posted by roadrunnertim on December 8th, 2012 11:38 PM
roadrunnertim
Member since:
May 9th, 2012 Points: 1,071,190
Member since:
May 9th, 2012 Points: 1,071,190
A loose serpentine belt would lead to power loss, since it wouldn't run the alternator correctly. Check to see if the belt is slipping or glazed from use.
The serpentine belt tensioner can be a problem as well. They wear out eventually, which leads to a loose belt.
Are your brake lights on all the time? Check to see if they're on after you shut the car off. Brake lights use a lot of power, so they can drain your battery in no time.
If they're on all the time, you will have to adjust or replace the brake light switch. It's at the top of the brake pedal. Bend the bracket that holds it in place down a little and see if that turns off the brake lights. If it doesn't, you will have to replace the switch.
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