I am finished prepping my slightly used (33k) 4.6 for installation and i plan on installing the motor this weekend. My understanding is that the ecu is the same and will be fine with the new motor. Is there any way to prime the oil pump? Is there anything that I should consider doing that I may not have thought of?

Thanks

 

Pull the fuel pump relay and turn it over a few times with no fuel to prime the pump.

What did you swap? If you did not re-use your intake with the TPS and IAC, the ECU may have to have the adaptive memory reset.

 

First, consider replace the engine rear main seal as well as the tranny front seal.
As for the ECU, if you want all the snap from the 4.6, have someone with a high end scanner go in and switch the ECU from a 4.0 setting to a 4.6.
Keep an eye on the oil, if it gets a little dirty quicker then normal change it out early.
ALSO NEW PLUGS AND 8 MM WIRES.

 

i have a 4.6 ecu from a 04..... 100$

 

He won't need it as long as his old one had no issues.

 

Thanks for the tips, ill have to reuse the old tps and iac to save the trouble of resetting the ecu.

 

I read that in the service manual I would need to reprogram the Ecu, I'm hoping to find someone who knows how to do that. There's no chance the ecu will learn the new engine is there?
I have new plugs and magnacore 8.5mm wires that have under an hour of use from the old engine

 

I didn't notice you had an 02. Find a local shop that has a Rover scanner to get into the ECU. It will run, but you won't get the performance you want out of it.

 

Running a 4.0 ecu with a 4.6 you will still have a 4.0.

 

But the ecu will re-learn the new engine, but it will take 500 miles or so.