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Intermittant spark cylinders 2-3

Tiny
ELHERRON
  • MEMBER
  • 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
  • MECHANIC
  • 41,814 POSTS
Have you checked the crank and cam sensors?
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Sunday, May 22nd, 2011 AT 8:04 PM
Tiny
ELHERRON
  • MEMBER
  • 3 POSTS
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
  • MECHANIC
  • 41,814 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
  • 3 POSTS
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
  • MECHANIC
  • 41,814 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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