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Battery not keeping charge. Alternator? Belt? 200 1991

Do the simple (and cheap) stuff first. Tighten the alternator belts so they don't squeal. It's a PITA but if they're in bad shape, then it's time to change all the drive belts... a full set is very reasonably priced at fcpgroton.com.

Do all the dash warning lights come on when you switch the ignition on (but stop short of cranking)? If the "alt" light is out you could have a bad charging system and not know it. If you have a meter, measure the system voltage at the battery while the car is running. - should be about 13.5 to 14.5 volts. If it's lower, check the condition of the battery cables, especially at the ends. Connections should be bright and shiny. Also check the wires at the back side of the alternator for integrity.

Since you confess to being a beginner, here's a safety tip: Before messing around with any electrical stuff, disconnect the battery with the GROUND SIDE FIRST. By interrupting the ground, that way when your wrench shorts between the positive battery terminal and the fender as you disconnect it, you won't have a 200-amp welding demonstration. Make a note (the written type) of any wiring connection as you disconnect it. That saves getting grease on your keyboard when you frantically type an SOS to the Brickboard looking for help because you took apart your revomometer spark thingy and can't figure out which leads go where...

Work patiently (as if I should talk...) and deliberately. A Bentley manual is you best friend. Ask questions... and dig thru the archives. Read the 700/900 FAQ's since a lot applies to the 200 drive train.

Good luck, and post back with your findings.






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