Jaguar s type 2000 over heats when stop in traffic,

Hello,
Here a two of the most common causes for overheating;

1. Low coolant.

2. Faulty thermostat.

Make sure your coolant level is up to the FULL line on the coolant reservior, ( do not fill completely up or you cauld cause the check engine light to come.)

Check to see if the thermostat is working.

How to test the thermostat in most vehicles;
Make sure the heater is off, start the engine and let it run for 6 to 8 minutes, ( this will allow the
engine to reach, " normal operating temperature "), from the inside of the vehicle turn the heater
temperature on high and turn the fan speed on high.
1. Listen very closely for a click sound from the engine, ( most thermostats make a click when
they open )
2. Watch your temperature guage, it should begin to lower as the coolant starts to circulate.
3. Usually within a few minutes the radiator fan will kick.

I hope this helps you.
Donnie