Close
PROBLEMS WITH ALTERNATOR
1999 Ford Taurus

PROBLEMS WITH ALTERNATOR

(1999 Ford Taurus)
HELLO I HAD PUT A NEW BATTERY AND ALTERNATOR ON MY CAR NOW WHEN I START IT UP IT RUNNES UNTIL I TAKE THE CABLE OFF IT SHOULD BE RUNNING BUT IT STOPS WHAT SHOULD I DO
in Raleigh, NC on August 15, 2010
Ask a Question
1 answer & 0 comments
Popular Answer
Don't disconnect a battery cable or alternator power cable with the engine running it causes a surge in current that can damage the alternator. Turn on the ignition switch to the on but not run position do you see an icon on the instrument panel representing a battery, if you do not see this battery icon the alternator is not seeing power to allow it to charge. Start the engine does the battery icon go out. Put a volt meter across the battery terminals with the engine off, at rest the battery voltage should be 12.6 volts if the battery is fully charged. Now get a friend to start the car while you watch the voltmeter, the voltage reading across the battery should read approximately 14.6 volts if the alternator is charging correctly.
Sign in to reply
General Diagnosis
$88 - $111 Learn More
Don't disconnect a battery cable or alternator power cable with the engine running it causes a surge in current that can damage the alternator. Turn on the ignition switch to the on but not run position do you see an icon on the instrument panel representing a battery, if you do not see this battery icon the alternator is not seeing power to allow it to charge. Start the engine does the battery icon go out. Put a volt meter across the battery terminals with the engine off, at rest the battery voltage should be 12.6 volts if the battery is fully charged. Now get a friend to start the car while you watch the voltmeter, the voltage reading across the battery should read approximately 14.6 volts if the alternator is charging correctly.
Sign in to reply

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
I have already replaced the alternator and battery. starter is good too. key will sometimes get stuck in the ignition...
Hi, i've recently gotten a 2007 chevy colorado with 37,000 miles on it. the truck runs great, however i noticed on...