2000 and 2001 ECU Swap

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05-14-2022 | 11:25 AM

mattheww97

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Joined: Sep 2014

Posts: 122

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Year: 2001

Model: Cherokee

Engine: 4.0

2000 and 2001 ECU Swap

I have an extra ECU I took out of a 2000 Cherokee sport. My 2001 has been throwing random codes, so I figured why not swap them. Are these ECU's plug and play? I seem to be finding conflicting info online about it.

Thanks!

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05-14-2022 | 12:02 PM

Cummins93

CF Veteran

Joined: Mar 2015

Posts: 1,202

Likes: 153

From: Northern CT

Year: 1995

Model: Cherokee

Engine: Turbo 4.0

Did the 2000 ecu come out of a coil rail ignition?

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05-14-2022 | 12:18 PM

fb97xj1

CF Veteran

Joined: Dec 2015

Posts: 3,038

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From: PA

Year: 1997

Model: Cherokee

Engine: 4.0L

The 2000 and 2001 XJ used coil packs. Shouldnt have any issue there. Some 2000 had 2 o2 sensors, some had 4. All 2001 had 4. And if one has anti-theft and the other does not, it will need programmed.

What are these random codes? Could be nothing more than dirty grounds. What have you done so far?

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