Jaguar XK8 - Recent Questions, Troubleshooting & Support - Page 7

You need to have the code read to find out the problem. An OBD-II Code Reader can be purchased for about $20. Go to http://www.jaguarforums.com/forum/xk8-xkr-17/ for specific answers to whatever problem the code identifies. Very helpful people there at the Jaguar Forums, you should consider joining, it's FREE!

light instead of buying a switch near the believer rooms brakes don't work it's probably the cable

Don't touch it! it's very converluted and even the experts have trouble. sorry I can't help more. But half the car has to come apart.

On the drivers side fuel rail there is a shrader valve port with a blue cap, touch the shrader valve and see if gas squirts out, you may get a little to begin with, the crank the car and test is again, if you have nothing the second time then you are either out of gas or the fuel pump has failed.
If you have fuel then the car could be flooded, this is a common issue with the early Jaguar v8's.
You would need to crank the car and half accelerate, then slowly push the pedal all the way (which shuts off the fuel believe it or not) then back to half way, keep fluttering the pedal and you can usually get it to run, but be careful as it will smoke once running.
There is usually not an issue with spark on these cars, the crank sensors never fail.

Need to use a stethoscope to listen for noise Could be you need a new radiator & thermostat & change all the hoses ,as well as the pump 15 year old vehicle,time to put some work into it. The pump, if it hasn't leaked yet, it will & you may feel play in it once free from any drive belt or pulley I was referring to ALL hoses,heater & others,they need to go around every 8 years There is no checking of a water pump other than removing it They don't last for 15 years Runs hot because the radiator is clogged or stat stuck or you have ignition problems,blocked exhaust converter,etc ALL ALL of those need to be checked once your done working on the cooling system New spark plugs,check ignition for misfires,replace any converter over 12 to 14 years old,oxygen sensors every 100,00 miles

First does the light on the switch on the console light up? It's behind the gearshift, not on the dash or steering wheel. If not, check your fuse box then check the switch. If it lights up, then your cruise control is also connected through your brake light switch. I suggest renewing it before proceeding further. If it still doesn't work, there is a vacuum "T" on the passenger side of the throttle body, (US car that is), near your fuel rail and regulator. It feeds the regulator and the cruise control vacuum servo's in back of the front passenger side wheel well. Check this "T" for leaks. Make sure the vacuum servo (the big shiny chrome one on top of the throttle body, is connected. The error is probably electrical, not vacuum since it's bringing up a light on the dash.

inside the top up tank there is a little float, I usually locate it and just work it up and down with a screwdriver, lots of times as the float can get stuck, failing this check the little sender unit under the said tank, but I must stress KEEP AN EYE ON TEMP GUAGE. This is a proper pain as I experience this often but used to it now, once a week when checking water level I just put screwdriver in and bounce the little float. hope this helps

Check transmission fluid level Almost all transmission slip problems originate from not enough fluid