3RZ Swap from 1999 manual to 1995 auto - TTORA Forum
 
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post #1 of 5 (permalink) Old 07-07-2018, 09:10 AM Thread Starter
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I am swapping a 3RZ coil pack from a 1999 manual transmission truck to a 1995 3RZ automatic truck. The engine from the 1999 had complete wiring harness and I have the ECU also, but while disconnecting the 3RZ from the 1995, it has an additional plug that the 1999 doesn't have. If I continue with the replacement by installing the 1999 3RZ and ECU, it will not have the additional plug. The additional plug is grey, what is it for, how can I complete installation? This is my first taco engine swap!! Thanks
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post #2 of 5 (permalink) Old 07-09-2018, 11:08 AM
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Can you be any more vague about the plug? There are dozens of gray plugs in the wiring harness. Where is the plug located? Was it connected?

Another potential issue - are you swapping over the transmission or are you trying to use a manual ECU on an auto truck?
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post #3 of 5 (permalink) Old 07-11-2018, 09:14 PM
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Originally Posted by Jparks View Post
I am swapping a 3RZ coil pack from a 1999 manual transmission truck to a 1995 3RZ automatic truck. The engine from the 1999 had complete wiring harness and I have the ECU also, but while disconnecting the 3RZ from the 1995, it has an additional plug that the 1999 doesn't have. If I continue with the replacement by installing the 1999 3RZ and ECU, it will not have the additional plug. The additional plug is grey, what is it for, how can I complete installation? This is my first taco engine swap!! Thanks
Clarification. You said swap coil packs from 1999 to 1995. Both year trucks have distributors, never coil packs.

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post #4 of 5 (permalink) Old 07-12-2018, 11:37 AM
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Originally Posted by DETrOi529 View Post
Clarification. You said swap coil packs from 1999 to 1995. Both year trucks have distributors, never coil packs.
Distributors were used from 95-97 on the 3RZ. Should be coil packs on 98-up.
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post #5 of 5 (permalink) Old 07-12-2018, 01:38 PM
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Distributors were used from 95-97 on the 3RZ. Should be coil packs on 98-up.
Ok! OP maybe doing engine swap, I donít know.

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