Hi any ideas on why my 1998 XK8 occasionally stalls when reaching highway speeds?

 

Welcome. You should get the fault codes read for free at any chain auto parts store. That will be a good first step toward diagnosis.

Also, are there any other symptoms?

 

Hi thanks for the info, no other real symptoms other than it seems to happen more in damp weather. Its very frustrating, the car stalls, the power is gone from the brakes and steering. You turn the car off and it restarts fine. Also there seems to be a burst of smoke from the exhaust system for the first couple seconds on restart. Its quite dangerous, so far i have always been able to cruise to the side of the road, but i fear the day i will be unable to make it to the side. My mechanic is stumped as well.

 

If there were any detectable faults before the stall, the codes for them would be stored in the engine computer...that is why it is important to retreive them for clues. If you get them, please post them.

Also, check in the trunk battery area and spare wheel area under the trunk floor and make sure you do not have any water or excessive moisture in there...that will play havoc with your electrical system.

 

These search results detail a number of similar problems and solutions that other forum members have had and fixed which may also be relevant.

Jaguar Forums - Jaguar Enthusiasts Forum - Search Results

 

thank you White XKR i will review the posts