I just had the new intercooler pump fitted, what intake temperature should I be seeing? I can't really tell if it's working or not but I got a low engine coolant warning so it sounds like it's pulling coolant back in the system like it should. I did see in a video with an XF that he was getting 45-48C intake temp which sounds a bit hot still but I don't know. What size hex bit do I need for the intercooler plug on the top of the supercharger? Would be nice to be able to open it up and bleed the system to make sure. I can't tell if the pump is working, it's very silent which is a good thing I guess but it's difficult to tell if it's running or not. If someone could tell me the correct air intake temp roughly that would be good? I did a little test just after starting the car. Ambient is about 0C, engine coolant temp was 63C and intake temp was 6C. I will take it on a longer run and monitor the intake temps I shouldn't think they should get anywhere near 50C.

 

That's bad news. Does it keep happening?

 

No. It's probably because I was burbing with the hose method so the level dropped a little. Maybe also because I lost some coolant when I replaced the intercooler pump. I ran it for a bit and no change.

 

Plug size:








Z

 

Years ago I did not have a 19mm hex key (the largest I had was 17mm) so I welded a nut on a 3/4" AF bolt and used it to remove the coolant plug.

You could use a 3/4" AF rod coupling nut?

 

The pump is located near/below the air box. It is reputedly running with key on, engine off. You should be able to determine if the pump is running or not, either by just hearing it, or with a mechanics stethoscope.

Best of luck, keep us posted.

 

It was just replaced with an upgraded part. When I squeeze it I can't feel anything but I can't feel much in my hands anyway because I can't feel any flow in any of the pipes. It does make the coolant level in the reservoir rise up and down though. I'm going to take the car for a spin tomorrow and measure the intake temperature, it should be at a reasonably cool temp compared to the coolant temperature.

 

I took the car for a spin to measure the intake temperature and it never went above 11C, ambient was 4C. The intercooler is touchable but not cool to the touch but I would say it's about 50C maybe?. Although that intake temp sounds like the reading from the MAF sensor temp sensor. Is there a temp sensor after the intercooler? I am getting hold of a 19mm hex head for a socket wrench so I can get the intercooler plug off to see if there is coolant in there or not. I still can't tell if the new pump is running or not, the hoses get warm though but that could just be from the heat from the engine. I can't feel anything but I can't feel any flow in the other engine coolant hoses either even though I know they have flow.

Edit: When I manage to get the plug off if there is coolant in there should I see the coolant move when the pump is running?

Edit: Going off this video the AVT pump should make some noise, mine does not. I will check to see if it's wired up properly. Anyone know if there is a fuse that could be responsible?

 

I pulled fuse 14 from the passenger bulkeahd because that is apparently the intercooler pumps fuse, I couldn't tell any change in the pump and no errors came up. The black wire is going to the brown wire so I'm pretty sure it's wired up, maybe the AVT pump is faulty? I am pretty sure it's wired up properly because the red wire from the Bosch connector goes into the brown and red wire and the black wire goes into the brown wire. Although it's difficult to tell which colour is which from the top but it looks like it's wirired up fine to me.

 

On my intercooler hoses I can feel noticeable pulsations when the pump is on.

Z

 

It's possible there is no coolant in the hoses, the hex key is coming tomorrow so I will open it up and fill it up then. Maybe the pump doesn't make much noise when there is no coolant to pump? I have a feeling there is no coolant in the intercooler system.

 

It's also possible the relay for the intercooler pump has blown. Just need to find it and check it. Or the wiring for the intercooler pump is buggered, I wander if there is a way to wire it another way? I should probably test the pump with a car battery first to make sure the pump actually works properly.

 

I tested the pump this morning and the cuircuit, I have power to the connector but the pump isn't running. I had the multimeter on the second V setting reading about 0.228. I assume the pump is dead on arrival considering it's brand new. I'm not very good with electrics but maybe someone else can figure that out? I did connect some speaker wire to extend the connector so I could switch the connections to see if it was wired up wrong but the pump didn't run regardless.

current is on AC 0.228 v does that sound right? I was told to switch it to DC, I am getting 60 mV on DC. I was told I should be getting around 12-14 volts.

 

OK I'm being dumb. I rigged up the old OEM pump with some power and it works fine, I tested the connector and no power is going to it when the ignition is on, I will check all my fuses. I can't seem to find the intercooler pump relay, it's not very clear in the Jaguar manual diagrams where it is exactly. I will pull each fuse out and check them, some of the fuses are empty in the passenger and drivers bulkead though, not sure if it's meant to be like that or not.

 

I cannot for the life of me find my intercooler pump fuse. My car is a 2003 model and it seems to change location depending ont he model year? Very annoying.

 

Aleluia! I found the fuse and it was blown, repalced it and now the new pump wizzes up. Just waiting for the hex head so I can fill the intercooler loop up.

 

Well done....

 

I'm sure a mechanic would have sorted it out in minutes. It took me two days.

 

Don't worry, most people decide they need a new ECU before getting round to checking the fuses, let alone relays and grounds.

Can you report back what Intake Temp you are getting? I have an old screenshot of Torque showing mine at 53ēC, but I need to go back and double check that. BTW on the XKR there is an extended PID called "Second air intake temperature" a suitable scanner should be able to show that also.

 

My scanner doesn't show this temperature. I wish it did though because that would be really nice. I need to invest in a better scanner I think. What one do you have? The hex bit came down that fits a 1/2" socket wrench or impact bit but I don't have one of them so I thought the bit would come out but it doesn't. I found a spark plug wrench and used that with it and got the plug open. I filled the intercooler up and went for a drive. I will let it cool down and try and see if more can get in there. I probably only put 1liter in at most so I figure it should take more than that. When I got back after a drive the intercoolers weren't cool cool probably around 50C like you said so maybe it needs more coolant in still. It was cool enough to the point I could keep my hands on it but I did only go for a 15 minute drive one way and 15 minutes the other way. I will probably do that tomorrow. I did try and squeeze the pipes to get the air out of the system but I'm sure there is still lots in there.