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1990 Ford F-150 Won't stay running

Tiny
WILLDABEAST
  • MEMBER
  • 1990 FORD F-150
  • 5.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
I jumped my truck and it started but it wouldnt stay running. I'd have to rev it to keep it going any further, but when I let up it dies again. Would it be an alternator problem, because it has a new battery, but it died just a couple days after I got it.
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Sunday, December 6th, 2015 AT 1:13 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Yes, it sounds like the alternator has failed. I would charge the battery and then check the output of the alternator with a voltmeter. It should be 14 to 14.5 volts

Roy
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Sunday, December 6th, 2015 AT 3:29 PM

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