take the hood off, un bolt it from the transmission, remove any wires hoses etc, and lift it out, its not a rice burner or front wheel drive, the hardest part is bellhousing bolts and exhaust manifold bolts
its on the pass side behind the right panel where your right foot is
where is the starter relay located on a 1990 Lincoln mark 7
In the engine.
Remove the breather, and it will be located on the back of the throttle body.
chain a cherry picker to the fuel injectors and jack it up, engine SHOULD just pull out. (who asks this sort of question, if you are asking this here you should not be working on a mark viii.)
The firing order on a 5.0 Lincoln engine is 1-8-4-3-6-5-7-2 . The number one cylinder is on the drivers side, closest to the front.
Front or rear?
If I remember correctly, back where the engine connects to the transmission
Yes
ecu= engine control unit
It is on the left rear of the engine.
And what about it do you need one ? selling one ? Fixing one?