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2001 Dodge Ram Running on 7 cylinders

Tiny
STRASBURG
  • MEMBER
  • 2001 DODGE RAM
  • V8
  • 4WD
  • MANUAL
  • 120,000 MILES
The DTC code reads P0302 "or cylinder 2 misfire. I have changed the spark plugs, wires, cap and rotor. I have re-set the computer but the problem still exists. I assume the since the truck still runs, it isnt a coil problem, I was thinking it could be an injector problem. My questions I have are:
1. What else should I be looking at?
2. Can you only change one injector, and Is there a way to test the existing injector?

Thank you for any advice on this matter.
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Monday, December 24th, 2007 AT 8:22 PM

2 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Off the top of my head I don't know the resistance value for dodge injectors, GM is 11.8-12.6 at 60 degrees, test with an ohm meter, Check my sig file there is a link to Mitchell manuals try it.
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Tuesday, December 25th, 2007 AT 8:30 AM
Tiny
SLAMMER
  • MEMBER
  • 15 POSTS
2001 FSM 12 ohms + or - 1.2 ohms at 68 degrees F. Might try switching the injector to see if the misfire follows? Same symptoms after the tune up as before?
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Tuesday, December 25th, 2007 AT 11:39 AM

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