Yeah, Just checked the jeep it is the cam sensor they have changed, £400 to diagnose and fit a £40 part b******s. If i knew the sensor was only £40 and not £115 like the crank sensor i would have ordered one and tried it first before taking it down the STEALERSHIP, So if there is any body out there with no spark on their jeep after you try the crank sensor,YES the cam sensor could be the problem £40 from STEALERSHIP and 5 minutes to fit.
