Just was wondering if the fan continues to run on others cars after shutting down the motor, on the new to me 07 V D P. My 04XJ8 never seems to do this, but is an early model, made in 03. Weather above 45 or so seems to trigger the event. Temperature gauge goes just above the midway point line, so the temperature is not too high according to the gauge. No leaks, or any smell of coolant, it only runs for a few min's then shuts off. Before tearing into things the cover over what appears to be thermostat, is brown making me think it's been replaced. Wonder what temperature thermostat was used, just which one should be used. Haven't seen the proper temperature yet, but still getting things sorted out from the P O, who got rid of it b4 he had more issues than no heat, a bad battery, suspension parts, air bag light. Have yet to put a thousand miles on it yet. But new spark plugs sure helped, Trans steel pan, with fluid,& filter are here waiting, as well as the fuel air filters. Will be nice when caught up on parts needed to make it like it's supposed to be The 04 is a great car, main reason the 07 was bought, bang for the buck they have depreciated just about all they are likely to. And should always be worth about the same or more, IF they are kept up properly

 

Likely a bad sign.

The dash gauge is roughly useless. A cheap OBD tool with live data will let you read the temp the car sees - expect it to be high

 

No codes yet, as far as temperature being out of range. Was wondering if maybe a 190 was used where a 165, or another one with a lower temperature was called for.Will have compare temperature to the 04 to see whats going on, as long as it's not the motor, no big deal. The cooling parts are eventually going to give you a problem, as things do have wear items. If it has wheels & t-t's you can't really afford it, after all.

 

+1 on knowing coolant temperature via OBD port. Has nothing to do with 'codes'.

Replace the water outlet, which contains the thermostat. JLR part number is AJ811793 Refill cooling system with DEXCOOL.

 

I feel like I'm seeing this issue come up for people almost weekly now! I agree with the OBD data stream suggestion, I bought a cheap unit for $35 and paid the $5 for torque pro and I have nothing bad to say about them.
Again NBCat beat me to the punch with the water outlet assembly, but I would also suggest doing a full coolant flush on the car as well. Coolant to me seems like one of those things that P O's would never think about, just top it up if it ever gets low.. coolant only lasts so long and it breaking down may actually contribute to the havoc it wreaks on the plastic housing. Best of luck to you!

 

Thats one of the things on the long to do list, coolant change, with a back flush of the heater core, hopeful that it can be saved. The 04's gotten a lot better after an auxiliary pump, with coolant change. The 07's still being assessed, the 04's a lot further along. Hate starting another project, when the first one is not all the way finished!!! But sometimes the deal comes along, making things awfully hard to pass on. When you see what's available because of the cost involved to have it fixed by the dealer, your hooked. Will no longer even look at what's available as far as cars, or bikes go anymore. Four Goldwings, two Jaguars, as well as a 96 Honda Civic grocery getter, all the various weapons of destruction, bike table, tools for bikes, cars, as well as wheel barrow, rakes, shovels, etc, for the lawn & garden. Have a hard time turning around, need a bigger garage, and more cash to fix, as well as to keep it all in order.

 

All good suggestions...

https://www.jaguarforums.com/forum/x...no-more-87243/

Thanks-
Mag

 

106c=222.8 degrees, Yikes temperature gauge sure seems to think things are fine, sounds way too hot for me. Question; Can we use a 180 or lower??? Want to keep things as cool as is possible for summer time. As things are now, really don't want to drive it at all, coolant looks fresh, but a gallon of coolant, and gallon of distilled H2O, do not cost that much. A water pump has been on the shelf for the 04, for some time now, for when it's needed. Well if one has coolant out for thermostat sensor cover deal, might as well do the water & auxiliary pumps. So you can forget about them, and back flush the heater core while your there.Belt tension bearing, with belt, am i missing anything? The hoses look to be in good shape, should they be replaced or are the up to the task?

 

Do the idler pulley as well - if you're doing the tensioner.

 

Yea, be aware that the temperature gauge on the X350 is odd ...

The lower half of the range covers approximately 65°C to 85°C / 150°F to 185°F

From 85°C to 115°C / 185°F to 239°F, the needle DOESN'T MOVE

The upper half of the range is then from 115°C to 120°C / 239°F to 248°F

There was, I think, a mod for the XK (which has a similar arrangement) to get rid of the 85-to-115°C 'deadband' but sadly that mod doesn't work on the X350.

 

Ordered part assembly # AJ811793 today, looking now for an auxiliary water pump, as well as make sure the new in the box water pump on the shelf thats supposed to fit the 04, also fits the 07. The thermostat assembly is definitely not the same one, AJ89485 is its number. Hell i don't know for sure if the water pump will fit the 04, other than Ebay sellers have been on target so far, matching up their parts. Biggest issue seems to be many do not know all the cars their parts will fit, leaving many coming up as not compliant, when they are.Like to have everything on hand B4 starting on any job, special tools lined up, all parts that fit the empty space created. Making the job almost enjoyable, when things go well, as well as in the time allowed

 

All previous water pumps have been superseded to AJ88912.

 

I was looking into the auxiliary pumps for my 07 not long ago. You can actually rebuild it if you want to spend as little as possible, but I found replacements on Rock auto, 5W8005 made by Cardone runs a little over $100 CAD. Jag part number is C2C6517, best to look parts up on SNG barratt by VIN and then go from there

 

Found this same auxiliary pump, & purchased it on two different occasions, bought it today for $84.04 delivered Mon.

 

A bit late to the thread, but want to add that a PCM software update will cause the fan to run at low speed for 2-3 minutes after shutdown in hot weather. If the fuel rail temp sensor reads >90C or thereabout the fans will run to prevent heat soak restart issues.

If your coolant temp is normal (195-205F) and the fan still runs after a hot run, then this has likely been done. If temps are getting over 210F, then I would suspect tstat or broken housing. Common issue.

-Michael

 

Not late at jumping in on the question at all, can use all the advise b4 i starti in, thrown my way!! I'm still waiting for the auxiliary pump to arrive, that was supposed to show up yesterday. The thermostat part #AJ811793 was delivered to me from the dealer last Fri. Have yet to start this job, too cold,& damp, for my liking if not really needed. Warmer, drier, more pleasant weather, just has to get here someday, hopefully soon.

 

Well i have a question; Will the air filter intake tube from an S type, fit our XJ8's? Was looking at the job of the thermostat, with housing, water pumps both of them while i'm there on the 07 V D P. Noticed that things looked a bit different, than my 04 Xj8, with the air intake tube. Much neater, sleeker looking, as well as less crowded. The reason being, that odd looking piece of plastic, normally sticking out there is not present, it has not been removed, it's just another part. Looks much better to me!!!

 

Not sure if the S-type will fit, but you can look at XJs after 2006 for the inlet tube without the resonator. The throttle body did change somewhere in the early years, so I can't guarantee fitment.

 

Ordered part #XR849560 today, only thing that looks like what's on my 07. $53.00 and that's delivered with a smile to my shop. Gotta love it, parts guy was on the phone for a long time checking, looking at pic's, with prices. Me on the computer looking at pic's on google, we decided this one sure looks right, so we'll see. Stock one is more than double

 

Fits like a glove.Looks a lot better without that resonator box, sticking out there.