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sounds like you might have two seperate problems here.
brake+alternator light at the very same time = alternator problem. someone should sticky this cos I've probably answered this question 4 times in the past week. "CLICK HERE IF YOUR CHARGE AND BRAKE WARNING LIGHTS ARE BOTH ON" or something.
brake light alone =brake problem
you'll never see the alternator light alone. it's designed to always turn on the BRAKE light with it. however, it doesn't work backwards, so if BRAKE comes on, it won't throw the charge indicator on. nissan's idiotic design of a bulb check.
check the fluid in the master cylinder first. there's a float switch in there that is designed to close at a low brake fluid level and turn on the BRAKE warning light. it looks like a little styrofoam pellet, and it should be floating on top of the brake fluid. if that's not it, you probably need a master cylinder or vacuum booster.
if the alternator light is on with it, you need to check the charging system. that light usually means the battery is being discharged. but don't depend on it to always warn you. the car won't run very long on battery power alone because the ignition, fuel pump, etc eat battery power. on a good battery you have about 90 minutes during the day with absolute minimum load and about 20 minutes at night with a high electrical load. when the battery has lost enough juice that you're in trouble, you'll know -- it might misfire, the turn signals get slow and lazy, the headlights get dim, and sometimes the radio cuts out when you hit the brakes.
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Dan
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"if you aren't really shifting, you aren't really driving."
Last edited by blackmaxima88 : Oct 12th, 2005 at 02:57 AM.
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