Top 20 2006 Jaguar XJ8 4.2 Questions & Answers


As with any car run the car for about 1/2 an hour,or until it is hot.Feel your top radiator hose, if it is hard and you cannot flex it. That is telling you your thermostat is stuck in the closed position and your antifreeze, is not circulating,which would explain your cold air. I hope this helped.

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Water valve is stuck or not being operated

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Put 2 gallons in and let the fuel pump run.

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will not raise in cold weather? do they go up in warm weather ? you may have condensate in your air lines that freezes . Evacuate the lines and clear the compressor drain .

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I. make sure your battery is ok first.
2.using your key unlock and lock your drivers door a couple of times; then try starting the car.
3.if you have a spare key ' try using it to see if it start your car. if it start with spare key then your main key needs a new chip.
good luck and god bless.

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not sure what model you are asking about? in 1988 there was the series 3. the xjs 5,3 v12. and the 6 cyl 3.6 and 4.0 ltr give me the vehicle you are asking about the xj8 was in the market in the late 1990s

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my suggestion is to clean your throttle body.it might take care of it.

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try disconnecting and reconnecting your battery cable.it does wonders sometimes.
good luck.

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the most common problems with the aj26/27 engine cooling system problems 1 thermostat 2 waterpump 3 blocked radiator the cooling temp indicator on the dash defaults to norm unless ther is a serious overheat perhaps its ok as it is if no one has changed any hoses and put in the wrong way then check 1 first then 2 then 3 is the cooling fan coming in al lthe time?thermostat is favorite

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you must mean out of limp mode.

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Its inside the fuse/relay box under the bonnet and it is relay R1.

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your car is the xj350 all alluminium body model and suffer from bad grounds cos the grounds are bonded and fail check the ground points in the trunk and also water ingress in the trunk

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Read out the code and act upon the issue.

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the cylinder numbering changed at 2000 model year before 2000 rh cylinders viewed sat in drivers seat 1357 lh 2468 after 2000 rh 1234 lh 5678

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the normal prob is caused by the wiring around rh trunk hinge broken removing supply to release motor. you have a manual key slot in rh of trunk lid think its in either of the trunk badges or the plinth this siezes up because everyone uses the remote or dash switch but when the wiring fails you cant use the key slot try spraying plenty of relase fluid in the slot say wd40 and gently keep trying to free it off that has allways worked for me when you get in remove the plastic rh trunk hinge cover and repair fractured wiring good luck

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Attach battery power to the alternator output wire under the hood and open the trunk as you normally would as now you should have power for the trunk opener.DO NOT try to start the car using this method.

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Many o2 sensors have gone bad but 50% of the time when a code is set on a car about an o2 sensor there is another cause which is changing the emissions & setting the o2 code (ex. vacuum leak, bad plug, injector, it could very well be the cat etc.) The root cause of the problem must be found NOT JUST READING CODES! TAKE YOUR CAR ELSWHERE.

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