F700 engine swap

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Jul 2, 2019 | 11:32 PM

Izzy434

Thread Starter

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Joined: Jul 2019

Posts: 2

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F700 engine swap

Hi everyone, I'm new here. I recently swapped engines from a 1996 F700 into a 1995 f700 dump. Gas. It ran perfect when I first started it up, but then once I got all the hoses connected it started running poorly and the check engine light went on. I'm wondering if I have to change the wiring harness or the computer. Are there other isues I should know?

I've never owned or worked on a large truck like this but I wanted a dumptruck truck and this one came along with a seized engine and I found another truck with a good engine and figured I could swap them, but being that they're two different years I'm wondering if I may have troubles.

Please advise

Thanks,
Sue

Jul 8, 2019 | 10:02 AM

jas88

Lead Driver

Joined: Feb 2002

Posts: 7,961

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From: Greater Austin, Texas

Did you use the 1996 wiring harness under the hood? You should be using the 95 stuff.

Jul 8, 2019 | 10:16 AM