1999 Ford Taurus car battery problems

TAURUSPROB

MEMBER
1999 FORD TAURUS

Electrical problem
1999 Ford Taurus 6 cyl Automatic

So I recently bought a new battery for my car and now every time I press the gas or the brakes my battery light comes on. I'm not sure what is wrong with it If you have any clue please let me know thanks

2 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Check the alternator belt tension if okay-get the alternator load tested-the light coming On is an indication that the alternator is not reconditioning the battery.

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Saturday, January 24th, 2009 AT 9:56 PM

DAVE H

MECHANIC
13,383 POSTS

TEST C
Disconnect generator 3-pin connector. Measure voltage between connector terminal "A" (Orange/Light Blue wire) and ground. If battery voltage is present, go to next step. If battery voltage is not present, check battery junction box fuse No. 26 (30-amp). Replace fuse as necessary. If fuse is okay, repair open in Orange/Light Blue wire.. Check system operation.
Leave generator 3-pin connector disconnected. Observe charge warning indicator with ignition on, engine off. If indicator does not illuminate, go to next step. If indicator illuminates, repair short to ground in Light Green/Red wire. Check system operation.
Restore connections and turn off all accessories. Start engine and run at 2000 RPM. Measure voltage between generator terminal B+ (Yellow/White wire) and ground. If voltage is greater than 15.5 volts, go to TEST B. If voltage is 15.5 volts or less, replace voltage regulator and check system operation.