The hose comes out of the back of the block behind the water pump, runs
under the intake manifold and up the rear of the right hand cylinder head.
It has a rubber hose about 4 inches long crimped onto a metal tube about
16 inches long. The rubber end fits on behind the water pump and the metal
tube (bent to fit) comes up behind the cylinder head and is secured by
two bolts. To answer your third question no! I would replace it with a
Mine sprung a leak. I would advise you replaced this hose for peace of
mind as you can only see a small part of it and it will be bad in the
places you cannot see. I have done a couple of these hoses lately and
you will probably need an EGR pipe and EGR valvle gasket as well as some
First drain the coolant, drain valve in the bottom left hand corner of
the radiator, then unhook the front end accessory belt from the alternator,
undo the two lower bolts and one small bolt at the rear of the alternator
and lift the alternator forward and rest on top of the water pump (be
carefull not to short the wires, you could disconnect the battery but
I don't bother) this gains you access to the clip on one end of the hose.
Then remove the vacuum pipe from on top the rear of the intake manifold
to the vacuum distribution manifold on the firewall, then remove the heater
hose with the TBL switch in it from the intake manifold end and fold to
one side, then remove the other heater hose from the pipe we are changing
on the rear of the right hand cylinder head.
Then switch off the air suspension and jack up the right hand side of
the car and put on stands (with only one side jacked up oil will not come
out of the transmission) remove the transmission oil level dip stick,
undo the bolt securing the dip stick tube to the transmission and remove
the tube (I put a bung in the transmission to stop dirt entering).
Next undo the small earth wire from the top bolt securing the heater
pipe to the cylinder head (clean this earth when refitting it has to be
good or you may get flickering headlights among other faults) then remove
the two bolts holding the heater pipe to the cylinder head (the top one
is a specialbolt for the earth just removed).
Then pinch the clip together on the end behind the water pump and prise
the hose of the spout, and with a bit of jiggery pokery you should now
be able to feed this pipe out over the transmission and then pull it out
over the engine, this can be a bit of a fiddle but it will come out.
A little tire mounting paste on the end of the hose helps when refitting
the new one and I always use a worm drive clip not the spring thing supplied
by Ford put the clip on the spout behind the water pump first then push
the hose on
I dont know how much these parts are in the States but here in the U.K
the Heater hose (part number F1AZ-18B402-A) is £45 (about $70) and
the EGR pipe (part number F3VY-90477-A) is £70 (about $110).
Below is the link to a detailed article with photos from lincolnsonline.com about this coolant line. Click on the link.