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97 civic ex 4dr/can i use an si engine harness w si swap

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Old 07-09-2008, 09:07 PM
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Default 97 civic ex 4dr/can i use an si engine harness w si swap

would it start or would I have to wire things up ..... I have am ls swap that ran and it won't start in my car now any help please
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Old 07-10-2008, 11:11 AM
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Default Re: 97 civic ex 4dr/can i use an si engine harness w si swap

The EX harness will do you just fine, you will just have the VTEC plug dangling. Are you sure everything is connected and bolted?

This means, The thermostat ground, Transmission ground and Valve cover ground? I got your PM. Make sure you didn't blow a fuse if you didn't un-hook the battery while doing your swap. Does it crank and just not throw spark? You have the distributor installed correctly, right?


If you could, be more specific on what all you have done. I will try to help you out as much as I can.
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Old 07-11-2008, 12:43 PM
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Default Re: 97 civic ex 4dr/can i use an si engine harness w si swap

your ls motor: obd0/1/2?
not enough information in your post.
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Old 07-11-2008, 06:26 PM
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Default Re: 97 civic ex 4dr/can i use an si engine harness w si swap

You need to use a 96-98 harness. I'm assuming you are using a 99-00 si wiring harness, that is your problem. The two harnesses are different at the computer.
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