1990 ford f150

Asked by GuruT696J Jul 17, 2018 at 06:36 PM about the 1990 Ford F-150 STD Cab LB

Question type: Maintenance & Repair

I have a 1990 ford f150. I replaced alternator and everything im still not getting charge to my battery. I jump it and it starts and when I take the pos post off it dies..can anyone help me find the proble..

4 Answers

FLAMMABLE answered 5 years ago

Is the alternator new? Either way take it out and have it tested. Always have them run the test 2 TIMES!

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Brianator answered 5 years ago

When you turn the key to ON with the engine off does the battery light on the dash come on? If not it's probably blown and need to be replaced as it's part of the "light circut" and it's required to be in working order for the system to charge

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Fromtoptobottom answered 5 years ago

Just replaced a alternator in my 1990 ford f150 also i had the same problem i thought they gave me a bad alternator but it was a small wire coming off of the voltage regulator that hooks into the batterie when the aalternator went out it burn the wire it was a 5 min fix

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