Yesterday I finished the task of replacing the auxiliary heater pump and all coolant hoses, and I learned a couple of things. (ok, more than a couple)
SAFETY - Disconnect your battery
SAFETY- Depressurize your fuel line. There is a Schrader valve on the passenger side (U.S) It's the same type valve on your tires. Surround it with a rag and push it a couple of times to depressurize the line.
SAFETY - You WILL be bent over at the waist with your feet spread far apart. Stand and stretch as needed.
IMPORTANT - The pump is NOT attached to the transmission, but to the bracket that also holds the flow valve

1) It's more tedious than difficult
2) It is not difficult to remove the upper throttle body and air intake. Must be done as one unit
2-A) Remove the wire retaining clips securing the fuel injector electrical connectors with needle-nose pliers. There's 8, put them in a container where you won't lose them.
2-B) The injectors will remain attached to the air intake, but the electrics will remain attached to the car.
2-C) If you drop a retaining clip, retrieve it immediately. There's a high potential it can fall into the cylinder valves when lifting the air intake if you do not.
3) It's a good idea to remove the air intake and then replace the valley hoses while down in there
4) Remove the expansion tank AND the expansion tank bracket as the bracket will be in your way from a comfort standpoint.
4-A) You don't NEED to remove the bracket but you will be happy that you did.
4-B) Do not remove the bottom bolt for the bracket as it's a slip fit and only needs to be loosened, remove the top bolt.
5) You will use every size socket from 10mm down to 7mm
6) The pump and flow valve can be removed as one unit
7) If you are replacing the octopus hose and valley hoses as I did, feel free to cut every single coolant hose you see. They are going to be in your way.
7-A) If you are not replacing the octopus hose and valley hoses, pray the Jaguar gods are smiling upon you.
8) You cannot remove the upper throttle body from the air intake while the air intake is installed on the engine. There is one bolt on the bottom that you cannot access.so don't even try.
9) You WILL need a quick connect fuel line disconnect tool. Don't freak, they're cheap and easy to use. Slip the tool over the fuel line, push it into the fuel connect fitting as far as it will go and pull the fuel line off.
10) You will NOT be able to disconnect the Norma connector from the metal pipe on the coolant feed line without destroying it. A new Norma connector comes installed on the octopus hose (if replacing)
11) After removing the coolant tank you will expose the T-fitting for the part-load breather pipe. The pipe is plastic, ribbed and you WILL break it. Just buy another one before starting.
11-A) You can fix the broken pipe with silicone and heat shrink. it's just for non-pressurized airflow.
12) There are two brackets, one each side at the bottom of the upper throttle body. 10mm, remove the top bolt on each side and loosen the bottom two only
13) After you remove the throttle body and air intake, run to the hardware store and buy two 3 inch long bolts with the same thread pattern as the throttle body bolts
13-A) Cut the heads off the 3 inch long bolts, and then cut a slot in each bolt for a flat head screwdriver.
13-B) You will use these bolts to ensure the metal throttle body gasket placement as well as guide the throttle body down while installing. Simply thread them into the lower throttle body
13-C) Loosley install two of the throttle body bolts. Use a flat head screwdriver to remove the guide bolts you installed after throttle body placement created
14) The passenger side (U.S) throttle body vacuum line has a coupling by the firewall to disconnect prior to the throttle body/air intake removal from the car
15) There are two lines going to and coming from the throttle body that makes no sense. They are Coolant Lines, yes, coolant lines. Our throttle body has coolant running through it.
16) There are four 10mm bolts securing the valve and pump bracket to the car. You cannot see two of them unless you are under the car.
16-A)They are almost directly under the flow valve, one up higher than the other. You can feel them, just can't see them.
16-B) Loosen the bolts using a box end wrench until you can use your fingers to remove them. They are attached to the rubber mounts so they will feel loose but aren't. Use patience.
16-C) You will find your self elbow deep, facing the front of your car using your right hand at a godforsaken position to remove the upper bolt. Wait until you reinstall the bolt...
17) When you're finishing up and you're installing the coolant tank and you notice you have an extra coolant line...look at #15
18) Use a 10mm socket and turn the throttle cable spring load clockwise to remove and reattach the throttle body cable. You need three hands otherwise, and you only have 2 with only room for 1.
19) Between the octopus and return valley hose, there is a T-intersection. Rotate the hose / T intersection 90 deg to remove. You'll see.
20) You can snake the new octopus hose in behind the multipin connector that's attached to the transmission


I'm no genius, but I completed the task of removing the coolant tank, air intake w/upper throttle body, flow valve/heater pump, octopus, and valley hoses. I replaced the pump and all hoses with new, and I wrote nothing down and took no pictures. I used only a diagram of the octopus hose. If you take your time and think about what you are doing you will see that everything in there is logical, no electrics can be attached incorrectly. Even the vacuum lines are different types for each side of the car, almost impossible to mess up. When removing a nut or bolt, remove the object and put the nut or bolt back in its original place. That way you will not only prevent losing the fastener, but you won't end up with any leftover as well.

I took my time and spent two days to complete this task. It's tedious, but not hard.

 

Marvin,

Brilliant entertaining write up. As someone who has done most of your list ( Valley Hoses on the future To Do list) I felt all your emotions as I worked.

Your Items 7A and 15 were also my stand out moments.

Thanks for taking the time to put your thoughts down. Thanks for sharing.

 

Throttle ICING is a real thing.

 

Great read and thanks for the write-up.
I think it strikes a chord with all of us who have been in there. Being able to cut off the old hoses is a real luxury - particularly the two that connect at the firewall.