I have a 2002 Jaguar S-Type 4.0. The car drives great except when I am stopped at a red light but when I continue driving it runs perfect. It seems to jump or shake when stopped. It does not happen all the time and it happens when the A/C is on or off. When the car is cold it doesn't happen either. There is no check engine light on. Does anyone know what the problem can be or have any ideas? Thanks!

 

Sounds like it could be missing, put some new plugs in and a new air filter.

 

Get the codes checked first before you pull the cheque book out!

Autozone will do it free.

 

More likely coils than plugs. Even more likely an air leak. Use OBD to check. Lots of existing posts about that.

 

thank you for the suggestions i am going to try and see if the problem stops.