WIRING HARNESS

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Sep 8, 2022 | 08:18 AM

Skeeter68

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WIRING HARNESS

Can anyone tell me which part of the wiring harness coming from the ECM has the wires in it for the O2 sensors. 1 big grey plug and 1 big black plug and 1 small black plug. Reason is that part of the harness burnt thru the wire loom and some of the wires. Thanks

Sep 9, 2022 | 07:59 AM

manicmechanic007

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From: Near Salt Lake City

A few of us have schematics kicking around
Are you working on a 52 Packard or what?
Your public library is your best bet (All Data)

Sep 19, 2022 | 09:59 AM

Skeeter68

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1999 f150 4x4 with 5.4 motor.

Sep 19, 2022 | 10:47 AM

STOFFERJ

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Quote:

Originally Posted by Skeeter68

1999 f150 4x4 with 5.4 motor.

transmission harness for the rear o2 sensors

Sep 21, 2022 | 03:24 PM

Skeeter68

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New question

Thanks for the info. What are the rules for swapping ECM's? Do they both have to be from a 5.4 or can you use ECM from a 4.6 motor on a 5.4 motor?

Sep 22, 2022 | 08:38 AM

STOFFERJ

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Quote:

Originally Posted by Skeeter68

Thanks for the info. What are the rules for swapping ECM's? Do they both have to be from a 5.4 or can you use ECM from a 4.6 motor on a 5.4 motor?

the ECM needs to match the transmission and the truck cluster / steering column

UNLESS you have it all reprogrammed