Help! I have a 2004 Jaguar xj8 (x350). I had a slow coolant leak, which I traced to the thermostat hoseing. I pulled the throttle body to get to the bolts to remove thermo hoseing, all procceeded perfectly, replaced thromo hoseing, and replaced throttle body ( I did not replace the TB gasket). Checked and double checked all connections, the 2 wire green and red connection near the top of the throttle position sensor cracked, but I have the wires hand fitted red on top green on bottom and they feel tight.

Engine turns over but will not idle, could I have damaged the throttle position sensor?

The car ran perfectly with the minor coolant leak, so now I have a car with no coolant leaks and a new thermostat hosing that won't run. Any help would be appreciated.

 

Figured it out! Bolts to throttle body not fully tightened, so had a huge vacumr leak, so beware and tighten all 8 bolts firmly and to torque specs for your jag.

 

Thanks for letting us know !

 

Giggety