Hey All,
Been going through all the systems in my (new to me) 2005 XKR Convertible. While checking all the fuse boxes, I cam across one in the passenger side bulkhead fuse box that was blown. #14 15AMP controls the supercharger intercooler cooling pump. Once replaced, the pump runs...it was a bit noisy at first but soon calmed down to a normal-ish DC motor sound.

I've topped off and "burped" the main coolant system (squeeze hose method) and all looks fine.

Then I removed the intercooler plug (an upside down small sparkplug socket works perfectly with a 3/4 open end around the base.) Coolant level was upt to the top. With the plug removed, I turned the ign switch to on and heard the pump run. I cannot determine if there is any fluid movement by looking down the plug hole. It seems there is some movement in the down hose...but unclear.

Is there a thermostat that needs to open first before it circulates...also does the pump run all the time, or just at startup and high heat conditions? Should it always run before a start and for how long?

Thanks,

Rich

 

The pump runs all the time the ignition is on.

From various threads it would appear most of these pumps don't make it 10 years! So the noises could be an omen.

The pump has a magnetic drive coupling so it is possible for the motor to run without actually pumping anything, if the impeller is jammed etc.

When I replaced my pump and bled the system I could see a fluid flow.

 

You can also feel if there is flow by squeezing a hose.

 

OK will try that.

Do I need to have the car warm, i.e. the thermostat is open, or can I test while cold. Does the engine have to be running??

What is the procedure for bleeding the intercooler system.

Lastly, the JTIS says to put just water in the system....looks like mine has orange dex in it. Bad??

Thanks,

Rich

 

The intercooler system is largely a separate system, though it is connected to the main system, flow is constant and does not rely on a thermostat or temperature.

You have correctly checked the system via the plug.

Orange coolant is the correct colour for this year

 

Just turn the ignition on, than the intercooler pump will operate, and you should feel fluid flowing.

 

Where is this pump located? Ive looked under my hood, I don't see it anywhere?
Id like to just upgrade mine cheaper than jaguar and solder the connector pigtail to factory wiring.

Maybe even relocate it.

 

Its on the rh front side of the engine, just take the intake airbox away and you have access to it.

 

OK, so I've been working on the XKR all morning. Got a bunch done. New antenna mast, antenna bypass switch and some other misc stuff.

I tried the intercooler pump and there appears to be a decent flow as felt through the pipes.

What is the "normal" sound of the pump? Could someone record it with their ignition on, car NOT running so I have something to compare it to?

Also, what is the correct air purge method for this cooling loop?

Thanks!

Rich

 

I have replaced my pump with a different make/version so it would not be much help if you still have the original.

Here is the correct fill method for the intercooler system.

I checked and ignored the reference to discarding and fitting a new sealing washer.
Mine looked fine so I reused it. I have not had any sealing problem.

 

When mine went bad I could definitely hear a whine from the pump, with the new one I don't really hear it at all. Note the car ignition just needs to be on the car doesn't need to be running. If you need to change and go with the upgraded Bosch pump you will need to make some small mods to the bracket as well (it's a larger diameter).

 

If you find you do need to replace the pump there is a thread that may be of use here: https://www.jaguarforums.com/forum/x...acement-85645/

 

OK have a Bosch 0 392 022 010 pump. Should be easy to replace.

The connector on the pump is NOT the same as on the 002 version of this pump.

It appears to be a Mercedes connector??? I have the WRT pigtail...which won't work. Anyone have a source for the right connector pigtail for the 010 pump?

Rich

 

Also,
I'd like to confirm operation. Side pipe is outlet, bottom one is inles...just like on the hella OEM pump, right?

Thanks!

Rich

 

You can use the old connector from the original pump and install it on the new one. Sorry I had some pics but can't find them. I know there are some other threads on this since I'd read them at the time.

 

jamdmyers,

"You can use the old connector from the original pump and install it on the new one. Sorry I had some pics but can't find them. I know there are some other threads on this since I'd read them at the time.
__________________"

Huh?


What connector?

Rich

 

OK!
After some fiddling around with the bracket and the positioning of the new pump I now have a fully operational, higher flow rate, intercooler pump fitted to my XKR.

I used the larger Bosch pump 0 392 022 010 rather than the 0 392 022 002. Main difference is a slightly increased flow rate and a different connector on the base.

Using info from the forum, I butchered, pinned, soldered, filled with sealant and hard wired the old pigtail from the bad Hella OEM pump onto the new pump.

Did NOT re-use the factory rubber spacer around the new pump as it is significantly larger in diameter. The old bracket fits fine with a slight bit of tweaking.

Put everything back together, turned the key and was rewarded with a quiet "whirrrr" rather than the old pumps "rocks spinning in a drink can" sound.

Flow is significantly increased. You can feel coolant moving through the lines.

Once the engine was started and warmed to 186.8F no amount of revving would warm the intercoolers past...well...cold.

We will see how it fairs in hot weather. I am toying with the idea of adding a thermistor to the intercooler cooling loop.

Thanks to everyone who posted about their pump experiences on the forum as the information was invaluable and saved me much aggravation and wasted work!

Rich

 

If you are revving while standing still you are limited to 3000 rpm, so you really are not exercising the supercharger much.

You can add a separate fluid temperature gauge to the supecharger circuit to keep an eye on heat soak...that is what I have on my car. The temperature readings back up the butt dyno difference you feel driving in cold vs. hot weather.

 

WhiteXKR,
I will definitely be adding a few additional sensors along the way!

Next.....the bluetooth and secondary video feed to the Nav system/display.

Thanks to you posts!

Rich