4.3 l swap for 2.5 l in tj - Jeep Wrangler Forum

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Old 05-05-2013, 01:29 PM   #1
Join Date: May 2013
Posts: 2
4.3 l swap for 2.5 l in tj

I am currently in the middle of swapping in a 4.3 l in my 97 wrangler (in place of 2.5). I have all of the mechanical stuff done. I am currently working on the wiring. I would assume I would need to keep the fuel pump and speedometer from the jeep wiring and use the jeep computer to run the dash. I would assume I would need to keep the same jeep wiring as someone swapping g a GM V8. For those who have done that swap, do you have advice or wiring diagrams on what jeep wiring to keep. I have had the GM harness and computer redone to run stand alone.

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Old 05-05-2013, 02:41 PM   #2
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Join Date: Feb 2013
Location: Fort Hood/ BCS, TX
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You won't use the jeep computer. You will just have to research what adapters you will need to make the gauges work with the 4.3 ECU.

The GM 4.3 uses a lot of the same parameters as the gm v8s.

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Old 06-28-2015, 08:38 PM   #3
Join Date: Jun 2015
Posts: 3
Can you share with me what you did to get your gauges working. I'm having the same issue with my swap.
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