Jaguar x type runs cold only when you stop for 7 mins on tick over does it warm up a bit and the gaug go up just off the blue bit there is pressure in the tank and i have changed the heater buster control on the water side of it can you help...
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the first thing to check is to feel if the radiator is hot, if the radiator feels hot and the engine is also hot the coolant is circulating ok then the problem is more than likely electrical, the temp gauge gets its signal from the engine control module the coolant temp sensor sends coolant temp signal to engine control module for engine managment purposes then passes it to instument pack/gauge, if the sensor was at fault you would have engine running problems also,with poss fault codes logged, if the engine and rad are cold/only warm after the engine has been run for 15 mins or so it sounds like the thermostat is stuck open but you have changed that. i have had faulty new ones in the past and have had to test them in a pan of boiling water, hope this is some help to you.
diesel engine version ,to be honest i would need my dirty grubby hands under the bonnet and listen to it when cold to have the slightest idea as to what the problem could be.Owing to the complexity of modern engines unlike a good old bedford TK or a garner the faults as you appreciate can be quite expensive to correct a silly fault or just a quick bit or hose replacement will suffice ,try reading the OBDII to see if any sensors are throwing a code up if no codes then start from cold and use the moniter status and check the readings of the temperature sensors ? failing which run it into a bosch diesel garage who have all the fancy software to check it out because unlike a good old ford D series where i could adjust the injection pump with the engine running to regulate the fuel output and reset the injectors on a simple pump with a glass dome iam now consigned to classic car repair or becomeing a macdonalds sweeper uppere
Very common on this car is the EGR valve, it is basically an Exhaust Gas Recycler it reuses the unburnt fumes from the exhaust and pushes them back through the engine to burn again. If this part has failed or has become dirty which is quite often the case on Diesel cars then it would certainly cause the smell in the cab and the ticking.
It's worth mentioning that these can be very expensive around £250 at worst but in most cases you can remove them your self and clean them with carburetter cleaner, don't use anything else though.
Inside the EGR valve is a small sensor not dis similar to that of an air sensor, just spray it with the cleaner leave it to dry naturally and then refit it. if it has worked you will notice the car will feel more responsive to. and the ticking would stop.
You mean the magic multipurpose relay or the multifunction magic realy ,diesel jaguar now that is sacriledge to us purists ,its a mondeo that changed shape .Anyway not sure which relay it is off hand but please describe the fault a bit more becuase as its a "jaguar" then the electrics are lucas and only good components are used not made in china .So if i knew a bit more of the problem i might be able to diagnose the fault a lot better
According to Jaguar, the engine has a heater fitted inside the engine which automaticly switches on when you start the engine and switches of at a pre-determaned time, this expells steam from underneath the car, and considered as normal.
Therf are other answers in the Jaguar forum, take a look there. I have the same effect with my X-Type.