This is my first post so apologies if I mess it up. I have a 97 xk8 convertible that I recently changed the cooling tower and thermostat housing on and now I am getting a poor performance warning and codes p0303 and p1316. I know I lost some coolant on the motor so suspect I have moisture on a coil or plug well maybe? My code reader says 303 is a misfire on cylinder 3, 3rd from the front on passenger side, but I have a jaguar manual from 1999 on cd that says a 303 code is a misfire on cylinder 5, front cylinder on driver's side, which seems far more likely given the cooling system work. Any clarity on this would be greatly appreciated. Thanks.

 

Welcome to the forums pnwtc,

Here is the relevant extract from the Jaguar DTC listing for your codes:







Please follow this link New Member Area - Intro a MUST - Jaguar Forums - Jaguar Enthusiasts Forum to the New Member Area - Intro a MUST forum and post some information about yourself and your vehicle for all members to see. In return you'll get a proper welcome and some useful advice about posting to the forum.

Graham