It may be the engine coolant temperature sensor (the one that feeds to the ECU, not the one that goes to the temperature gauge). If this has failed into a lower resistance mode the engine will think that it is warmer than it really is and not use the correct fuel mapping. This type of fault can only...

The spark plugs are not too bad to change provided you have the right tools and a lot easier to change than on some cars I have worked on. I would recommend using a magnetic spark plug socket for removing plugs on the X308 due to how deep they are in the cylinder head. It is best the change them one...

The stop lamp is controlled via the Security and Locking Control Module. The stop lamp relay only operates the high level brake light which is on a separate circuit. There is no separate fuse for the nearside and offside brake lights. I would suspect the multiway connector that goes into the lamp un...

The part number is RTV sealant WSS-M4G320-A3. I believe that this is a Ford part number. Try the spares department at either your local Ford or Jaguar dealer. The sealant should be applied at two places on the joint between the timing cover and the cylinder head. The application of sealant must be 3...

There are no bulbs fitted to the steering wheel controls (radio or cruise control) on the X308 models.

Regards,

David

This is really a job for a specialist. It requires the signals to the adaptive damping control module (located in side of passenger footwell) to be checked to see if they are at the right levels. This can only be done by someone with a suitable portable diagnostic unit set up to run diagnostics on a...

It is worthwhile taking time to remove all of the bolts holding the coil pack covers in place as well as those holding the coils in place and putting a small amount of copper based grease onto the threads. Steel bolts were used that go into brass inserts moulded into the cover body (and the cam cove...

If the vehicle is only used for short journeys (less than 5 miles) on a daily basis then it is good practice to give the vehicle a high speed run every now and again to get rid of some of the carbon deposits. This is due to the catalytic converter never getting up to its proper operating temperature...

It must be noted that if the vehicle is first registered from 2001 then it can only be fitted with an EU type approved towbar. This will have a plate on it which stipulates the maximum nose weight that can be applied. As far as I am aware only Brink make towbars for the X308 which are type approved ...

Removed

I had this problem a while back which was cured by disconnecting the battery for one minute and then reconnecting (effectively rebooting the ECUs).

Note: Make sure that you know the radio code before trying this.

Regards,

David

1.3L MK1 Cavalier 2 door saloon
1.6L MK2 Cavalier estate
1.6L MK3 Cavalier hatchback
2.5L MK1 Omega saloon
4.0L Jeep Cherokee
4.0L Jaguar X300 Sport
4.0L Jaguar XJ8 (current car)

Try alldatadiy.com for an online solution. They have information on the X308 which is accessed online on a subscription basis (just under $50 for a 5 year subscription for one vehicle). Note: The data relates to the models sold in America but most of the information is relevant to the UK models. I h...

Try alldatadiy.com. They have information on the X308 which is accessed online on a subscription basis (just under $50 for a 5 year subscription for one vehicle). Note: The data relates to the models sold in America but most of the information is relevant to the UK models. I have used them for a num...

Hi, If you intend to perform diagnostics I would suggest that you purchase an OBDII tester with CANBUS capability and ideally one with the Jaguar extended fault code set. I personally use an AutoXray OBDII tester and a Launch CReader data logger on X308s together with a good DMM. The AutoXray unit h...