1997 Dodge Ram random miss firing

Tiny
LEVIWYNN
  • MEMBER
  • 1997 DODGE RAM
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 19,800 MILES
The truck that I have is missing the codes reading that it is random miss firing, I have changed the cam position sensors, also the timing chain, and the pcm.
Saturday, January 24th, 2009 AT 8:46 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Random misfire P0300 normally points to false air ( vacuum leak ) and contaminated fuel

Engine misfires 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.
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Saturday, January 24th, 2009 AT 10:15 PM

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