2003 s type 4.2 ltft bank 1 7.0 2 4.8 stft all over the place low rpm stumble hesitation will continue unless you stomp on it or down shift new coil packs and plugs fuel psi is around 45 sensor says 55 idle is smooth only code that surfaces is catalyst efficiency below threshold

 

Welcome to the forum jrpool,

I've moved your post from XK8/XKR to S-Type forum. Members here with the same model will be able to help.

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

 

Deleted, moderator posted b4 I finished typing.