1999 Ford Ranger alternator

1999 FORD RANGER
135,000 MILES • 4 CYL • 2WD • MANUAL
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RIMAD02
  • MEMBER
  • 1 POST
The truck starts with no problem but then it starts to missfire and has no power as I try to drive it.I replaced the spark plugs and cables, but the problem did not go away.Just wondering if anybody had this problem before.
Jul 28, 2009 at 3:00 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Engine misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
Jul 28, 2009 at 3:53 PM
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