1994 Dodge Ram please help

1994 DODGE RAM
179,000 MILES • V8 • 4WD • AUTOMATIC
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BOCEPHUS8867
  • MEMBER
  • 1 POST
my truck runs fine for few days then all at once when climbing a hill is when it usually starts will start slightly missing then lose power and sounds like a backfire like popping under the hood and then if cut off for few minutes and restarted it might run rough then all at once picks up and goes on
Jan 16, 2010 at 1:23 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check and test the following below:

Oxygen sensor
Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires
Cap and Rotor
Jan 16, 2010 at 1:28 PM
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