97 TJ swapping engine with an 02...No FIRE!!! Help! - Jeep Wrangler Forum

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Old 06-22-2013, 06:48 PM   #1
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Cool 97 TJ swapping engine with an 02...No FIRE!!! Help!

I bought a 97 Wrangler with an a new engine that needed to be installed. After install the new motor, I am just finding out the new motor is from an 02 wrangler. I've got the engine turning over; but, don't have any fire to the plugs. Its been suggested to me that the new engine can be convertered to work in my 97 jeep. Can anyone help with this?
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Old 06-22-2013, 07:36 PM   #2
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Have you changed the ECU? Or still using the 97 ecu?

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Old 06-22-2013, 08:42 PM   #3
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Its the 97 ecu. Should i change the ecu and the distributor to the 02?
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Old 06-22-2013, 08:47 PM   #4
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Originally Posted by steiner View Post
Its the 97 ecu. Should i change the ecu and the distributor to the 02?
Does that '02 engine have a distributor? I thought they had the coil rails.
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Old 06-22-2013, 08:51 PM   #5
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Does that '02 engine have a distributor? I thought they had the coil rails.
They do, that's why there's no spark. I have a '98 and an '02.
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Old 06-22-2013, 09:02 PM   #6
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Well this engine sure has a hole for the distributor. Keep in mind this is a 4 cyl. My undestanding is that 6 cyl use coil rails not the 4cyl.
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Old 06-22-2013, 09:03 PM   #7
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Originally Posted by Zdrisko View Post
They do, that's why there's no spark. I have a '98 and an '02.
Which part of that were you saying "they do" to? lol
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Old 06-22-2013, 09:04 PM   #8
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of course i could also have the year of the new engine wrong. It came with the jeep when i bought and the previous owner told me it was the engine out of an 02
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Old 06-22-2013, 09:04 PM   #9
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Well this engine sure has a hole for the distributor. Keep in mind this is a 4 cyl. My undestanding is that 6 cyl use coil rails not the 4cyl.
You're right. I was assuming it was a 6 cyl.
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Old 06-22-2013, 09:10 PM   #10
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Which part of that were you saying "they do" to? lol
Yup, I totally spaced the fourbangers... d'oh!
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Old 06-22-2013, 09:17 PM   #11
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And you're absolutely positive it's a spark issue?
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Old 06-22-2013, 09:25 PM   #12
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Definetely not getting a spark. I have already replaced the crank sensor which was my first guess when I didn't get a spark. 98-02 use the same distribtors. So I'm assuming that i need a distributor that matchs this engine. So...then what about the ecu? will 97 computer comunicate correctly with this enigne/distributor? What else am I missing?

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