F-150 alternator problems

25

Asked by Jul 24, 2010 at 04:36 PM about the 1990 Ford F-150

Question type: Maintenance & Repair

has anyone ahd problems with a 1990 f-150 with 302 speed manual? i think my alternator is out but not sure if it's that or just the battery

2 Answers

3,055

try a voltage meter,the altenator should be charging around 14.4 volts,if its not your altenator is on its way out. or disconect your baterrie when its running,if the altenetor's done your truck will stall.

Start the truck then unhook the pos. Cable if it dies it is the alternator

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