INTERMITTANT SPARK CYLINDERS 2-3

  • Tiny
  • elherron
  • 1993 Mitsubishi Eclipse
  • 4 CYL
  • FWD
  • automatic
  • 166,000 miles


i have a 1993 mit. Eclipse 2.0 non-turbo and im getting intermittant spark on cylinders 2 and 3.I have already changed the computer, coil pack, and power transister module(all used parts from wreacking yard) its always when I first start the car this problem occures. Once the car is started it never fails. When it does fail if I try long enough the spark will come back. Any ideas?

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Sunday, May 22nd, 2011 AT 4:36 PM

5 Replies

  • Tiny
  • KHLow2008
  • Expert
  • 41,994 posts

Have you checked the crank and cam sensors?

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Sunday, May 22nd, 2011 AT 8:04 PM
  • Tiny
  • elherron
  • Member

Since 1 and 4 fire at same time is there 2 outputs from the cas

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Monday, May 23rd, 2011 AT 1:52 AM
  • Tiny
  • KHLow2008
  • Expert
  • 41,994 posts

There is one output for 1 and 4 whreas 2 and 3 has another. If the sensor gears are faulty, they could miss when at 2 or 3.

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Monday, May 23rd, 2011 AT 12:06 PM
  • Tiny
  • elherron
  • Member

Ok cool that will be the next thing I try I will let you know thanks alot

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Monday, May 23rd, 2011 AT 3:56 PM
  • Tiny
  • KHLow2008
  • Expert
  • 41,994 posts

You're welcome.

Check the gap between sensor and sensing gears. Look for uneven/wavy movement of the sensing gears and chipped teeth.

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Monday, May 23rd, 2011 AT 4:16 PM

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