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IM only running off 2 cyl, dont know why

Tiny
MUD4594
  • MEMBER
  • 1998 MITSUBISHI ECLIPSE
  • 4 CYL
  • FWD
  • MANUAL
  • 92,000 MILES
I have a 98 eclipse spyder gs 4cyl 2.4 l engine. I'm only running off of 2 cylinders and don't know why. I have replaced the ingition coil, fixed and checked the wiring harness, and tried a new ecm. The only thing I havent tried is the crankshaft postion sensor and the camshaft position sensor. Isone of these goin to fix my problem. Im at a total loss
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Sunday, February 13th, 2011 AT 6:02 AM

6 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Check leads, plugs and injection at those cylinders, which cylinders are not firing?

Mark (mhpautos)
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Sunday, February 13th, 2011 AT 6:16 AM
Tiny
RASMATAZ
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The crankshaft position sensor tells the computer which cylinders to fire-
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Sunday, February 13th, 2011 AT 6:24 AM
Tiny
MHPAUTOS
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If the CPI sensor is faulty you will not get a signal at all, and that is also for a cam sensor, there will not work on selected cylinders to give you this type of problem.

Markk (mhpautos)
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Sunday, February 13th, 2011 AT 6:27 AM
Tiny
MUD4594
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  • 3 POSTS
Ive checked the plugs and injectors, 2 and 3 arent firing at all. Thats what I thought about the sensors, they would not fire at all. Im at a total loss here, any new input?
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Sunday, February 13th, 2011 AT 6:43 AM
Tiny
MUD4594
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  • 3 POSTS
Of course im down to go buy both damnsnesors and see if anyhting changes, just for the sake of trying everything
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Sunday, February 13th, 2011 AT 6:44 AM
Tiny
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Ive checked the plugs and injectors, 2 and 3 arent firing at all.

Check and test the computer ground drivers for the injectors
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Sunday, February 13th, 2011 AT 7:10 AM

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