Although we don't see but a few Jags in my neck of the woods, I will say that after a little reseach I understand the the plastic impellers tend to fail on the water pump and they have timing chain issues. Both of which you have just gone through.
IF you had overheated this engine, there is cause for concern the cylinders are nikasil sprayed and don't do well with overheating. The hose that runs
under the intake manifold can split open when it overheats. IF so, anticipate a possible reman engine or used one.
IT would be worthwhile to have the ecm's software re-flashed to the most current version.
Wednesday, August 20th, 2008 AT 5:54 AM