what do i have to do to put a 2004 3.8 engine into a 1995 car

Asked by Cricket_Tree Feb 10, 2014 at 10:45 AM about the 1995 Ford Mustang

Question type: Car Customization

i have a 95 ford mustang in which i took the motor out and am replacing it with a 2004
motor..the motor is the same the only difference is the wiring harness..can i take the old
wiring harness off the old motor and put on the new one?

1 Answer
31,255

yetilikesbeer answered 10 years ago

You will most likely need to change the wiring harness and some of the sensors. Rule of Thumb: If the sensor is different than the one in your car either verify that it sends the same signal bake to the ECM or just swap it with the original from your car. You'll have to use common sense with this as most people here would not know the differences between each component on that car. When I do my engine swaps I always use the units from my car in the new motor because I know they work. Then test the ones that came with motor, keep the good compatible ones.

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