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1996 Dodge Neon Engine misfire/rough idle.

Tiny
AJRUTHERFORD
  • MEMBER
  • 1996 DODGE NEON
  • 4 CYL
  • 2WD
  • MANUAL
  • 154,000 MILES
Quick one, I think. Neon has been throwing a misfire error (43). Originally I thought it had to do with the oil getting into the spark plugs (another issue I think I have since fixed). I don't have an OBD-2 interface, so I'm relying on the check engine codes.
I did a check of the ignition coil. I'm getting 1.2 ohms primary and 11.2k-11.8k ohms on secondary. These numbers make me suspicious, but I'm on a tight budget, so I'm looking for a confirmation.

Related: I have performance spark plug cables tested around 1.5k ohms each. I just changed the spark plugs, with a 0.035" gap. Cam sensor was recently replaced and I just replaced the fuel pump/fuel tank. Air filter checks out okay. Also. I smelled unburned gas during the idling today.
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Saturday, September 11th, 2010 AT 7:14 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi ajrutherford, Welcome to 2carpros and TY for the donation

IGNITION COIL RESISTANCE - Ohms @ 70 °F (21 °C)
Application Primary 2.0L (DOHC & SOHC).45-.65 ohms

Secondary 2.0L (DOHC & SOHC) 7000-15,800 ohms

The coil don't look to good as specified
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Saturday, September 11th, 2010 AT 7:40 PM
Tiny
AJRUTHERFORD
  • MEMBER
  • 6 POSTS
Running the list. The major possibilities (because of replaced parts) are air leak, fuel injectors, Lower oxygen sensor, and of course the coil itself. I'll check for vacuum leaks and swap that coil.

Thanks for the help. I'll check back when I solve the problem.
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Saturday, September 11th, 2010 AT 9:06 PM

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