2010 engine set up in an 07 - Toyota FJ Cruiser Forum
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post #1 of 13 (permalink) Old 04-20-2017, 03:51 PM Thread Starter
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2010 engine set up in an 07

@m3pedro hooked me up with a complete 2010 set up (tranny, engine, transfer case, everything to convert to 4WD) for a sweet deal when my engine went out in my 2WD 07 FJ.
The shop ran into some problems between the engine wiring (2010) and body harness (2007) and they gave me the option of selling my 2010 set up I purchased and swapping for a 07 4WD set up or going balls to the wall and replacing the entire body harness with the process. If I replaced the body harness, will I run into more problems with wiring up the dash, speakers, etc?
I'm looking for suggestions from either direction here. Pros and cons of both

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post #2 of 13 (permalink) Old 04-20-2017, 04:22 PM
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Re: 2010 engine set up in an 07

If your comfortable with the 2010 set up, keep moving on it.
Your really not going to have a Frankenstein when done, just updated power train which is good.

Anytime you start changing a stock vehicle to something else problems are many as you are finding out.
Time and money are the fix.

You took on a hell of a project converting a 2wd to 4wd. My hats off to you.

When you think you got it tough think about that guy switching in a GM LS motor in his FJ
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post #3 of 13 (permalink) Old 04-20-2017, 04:56 PM
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Re: 2010 engine set up in an 07

Or you can just sit down with a wiring diagram and use the plugs off the old setup on your new engine harness and get it all mated correctly. Its not hard, just tedious. Ask me how i know. I installed a OBDII Lexus V8 in my OBDI Cressida and made it a 5 speed M/T.


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post #4 of 13 (permalink) Old 04-20-2017, 08:24 PM
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Re: 2010 engine set up in an 07

Do you still have to swap the body harness if you get the 07 4x4 drive train or is the 2wd the same or close enough that it's easy to adapt? If so I would probably keep the 2010 stuff and do whatever was needed to make it work with your current harness. Swapping a body harness is gonna suckkk.
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post #5 of 13 (permalink) Old 04-20-2017, 08:29 PM Thread Starter
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Re: 2010 engine set up in an 07

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Do you still have to swap the body harness if you get the 07 4x4 drive train or is the 2wd the same or close enough that it's easy to adapt? If so I would probably keep the 2010 stuff and do whatever was needed to make it work with your current harness. Swapping a body harness is gonna suckkk.
The owner of the shop said the sensor locations on the '10 engine are much different than the 07 and he said the main plug for the 07 harness has 18 pins while the '10 has 19 pins. It sounds like the wiring for 4WD is an easier task than the switch between the 07 and 10 wiring. And the hiccup with having to replace the wiring harness literally doubles the cost of the project
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post #6 of 13 (permalink) Old 04-21-2017, 10:30 AM Thread Starter
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Re: 2010 engine set up in an 07

She seems to have lost a bit of weight since the last time I saw her. Anyone know of any hang ups that might occur from switching the wiring harness from the 2010 into the 07 body? The headlights, blinkers, brakes all use the same plugs but what about the sensors and what not?
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post #7 of 13 (permalink) Old 04-21-2017, 10:34 AM
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Re: 2010 engine set up in an 07

I've got a guy that'll correctly wire up your harness to work with your truck without having to go through the fail of your incompetent mechanic. All he'd need is you to send both engine harnesses off both engines and he'll send back the hybrid harness with instructions.

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post #8 of 13 (permalink) Old 04-21-2017, 10:37 AM Thread Starter
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Re: 2010 engine set up in an 07

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007-FJC previously said: View Post
I've got a guy that'll correctly wire up your harness to work with your truck without having to go through the fail of your incompetent mechanic. All he'd need is you to send both engine harnesses off both engines and he'll send back the hybrid harness with instructions.
SoCal?

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post #9 of 13 (permalink) Old 04-21-2017, 11:18 AM
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Re: 2010 engine set up in an 07

This guy is a professional up in Washington but I do know of a guy in SoCal who might help you. I'll shoot him a message.

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post #10 of 13 (permalink) Old 04-21-2017, 11:44 AM
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Re: 2010 engine set up in an 07

This just crossed my mind. Is the 2010 ECU immobilized? If it is, you'll need the immobilizer from the guy you bought the engine from alone with the key fobs or else it wont start.

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