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Ford
Bronco
Electrical
Battery
Jump
1989 ford bronco engine will not hold a charge, will start if jumped but dies if lights are turned on
1989 FORD BRONCO
99,000 MILES
LIZ_SILVA79
MEMBER
5 POSTS
I have changed battery cable, starter relay. looking for what I should check next.
Dec 19, 2011 at 9:09 PM
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CJ MEDEVAC
✓
Experienced Mechanic
11,000 POSTS
DO YOU KNOW HOW TO TEST BATTERY VOLTAGE WITH TRUCK OFF---AND WITH IT RUNNING, AT THE BATTERY POSTS WITH A VOLTMETER?
LETS SEE WHAT YOU HAVE FOR RESULTS
LOOK THIS OVER TOO
https://www.2carpros.com/questions/1989-ford-bronco-get-truck-start-key
YOUR TURN
THE MEDIC
Dec 19, 2011 at 9:18 PM
CARADIODOC
✓
Experienced Mechanic
34,413 POSTS
The generator is what keeps the battery charged after starting the engine. Use an inexpensive digital voltmeter to back-probe the wires through the plug and tell me what you find when the engine is running, and the wire colors.
Dec 19, 2011 at 9:19 PM
CJ MEDEVAC
✓
Experienced Mechanic
11,000 POSTS
THIS MAY HELP TOO
http://www.youtube.com/watch?v=dq24oPUVmdA
THE MEDIC
Dec 19, 2011 at 9:20 PM
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Frequently Asked Problems for This Vehicle
Engine won't start
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Engine stalls while driving
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