MusicLover
Member
- Joined
- June 20, 2016
- Messages
- 28
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- 0
- Location
- Winnipeg, Manitoba, Canada
- City, State
- Winnipeg, Manitoba
- Year, Model & Trim Level
- 2004 Explorer Sport Trac
- Callsign
- MusicLover
Hi all. Getting ready to install a low mileage 2007 Mustang engine into a 2004 ST and have a few questions. Hopefully someone can help me out.
I have seen a few different threads regarding having to change the intake manifold, exhaust manifolds, valve covers and use the existing wiring harness to connect everything to the PCM. Also there was a thread that the old crankshaft position sensor from the old engine had to be swapped over onto the new(used) engine. However, it was indicated that the harmonic balancer from the old engine did not have to be swapped.
Why is this? The harmonic balancers look a little bit different from the old engine to the new engine so I am wondering if just changing the sensor over will actually work. Maybe the new engine uses a crankshaft position sensor that sends a different voltage or resistance signal? Will the CPS read the tone ring correctly on the new balancer? My understanding is that this is a just a magnet spaced out over many increments so the PCM knows engine RPM. Does this sensor have to be lined up with the magnet at TDC for the crankshaft position?
One last thing, there is a wire bolted down more or less in the center of the cavity underneath the intake manifold. This wire goes down the left side of the engine (left if facing it head on from the front) but is hanging beside the crankshaft position sensor. I did not unplug this one and am curios to know if this is the plug in for the the CPS? If it terminates to the engine....how does the PCM receive the signal?
Looking forward to seeing some replies.
Thanks in advance for the help.
I have seen a few different threads regarding having to change the intake manifold, exhaust manifolds, valve covers and use the existing wiring harness to connect everything to the PCM. Also there was a thread that the old crankshaft position sensor from the old engine had to be swapped over onto the new(used) engine. However, it was indicated that the harmonic balancer from the old engine did not have to be swapped.
Why is this? The harmonic balancers look a little bit different from the old engine to the new engine so I am wondering if just changing the sensor over will actually work. Maybe the new engine uses a crankshaft position sensor that sends a different voltage or resistance signal? Will the CPS read the tone ring correctly on the new balancer? My understanding is that this is a just a magnet spaced out over many increments so the PCM knows engine RPM. Does this sensor have to be lined up with the magnet at TDC for the crankshaft position?
One last thing, there is a wire bolted down more or less in the center of the cavity underneath the intake manifold. This wire goes down the left side of the engine (left if facing it head on from the front) but is hanging beside the crankshaft position sensor. I did not unplug this one and am curios to know if this is the plug in for the the CPS? If it terminates to the engine....how does the PCM receive the signal?
Looking forward to seeing some replies.
Thanks in advance for the help.