2000 xj8 4.0 wires burnt to crank sensor now engine is dragging like a bad starter or week battery. have replaced wires to crank sensor , do I replace engine , or is there something else I can do, Thanks for any help or input

 

It's a little early to say you need to replace the engine. Find someone with a code reader and report the codes here so that we may possibly have an idea what is going on.

 

have a reader, will read tomorrow thanks

 

"wires burnt to crank sensor"= Do you really mean the wires were burned to the crank position sensor on the bottom of the bell housing? If so, what burning road were you driving on? I would say it is just short of impossible to imagine a reluctance sensor wire harness having enough current to burn the wires. Not disputing what you say (exactly) BUT something seems amiss here.

 

+1 more detail needed

The sensor doesn't affect the mechanical lumps so engine should be OK I think.

 

Apparently, it was the wires behind the power steering pump that caught fire, when his son was driving.


Have you checked the earths and the power connector at the false bulk head ?


But am also a +1 on getting the codes pulled and post them up.
Otherwise it is all just guess work

 

p0335 crank sensor, p1384 vvt solenoid a malfunction, p 1396 glow plug monitor fault ( bank 2 ) thanks to all for any help

 

you are correct some fluid dripped on wire and it caught fire, my son put fire out before anything else was damaged

 

the engine cracked thus no compression , shop says new motor, have found some doner cars

 

That does not make much sense. No or low compression on all cylinders? That would be due to cylinder wash, which occurs when continuously cranking an engine that doesn't start.
Is your mechanic a Jag specialist, or at least a foreign car specialist? Please ask for the compression figures and post here.

 

Engine cracked ? Glow plug monitor fault ? Where are the glow plugs ? I'm just a little curious about what happened. Oh well.

 

The two statements disagree.



Your engine doesn't have glow plugs........

I think you need a new mechanic.

 

"I think you need a new mechanic. "

++ on that. Either you have misunderstood him, or reported info from other places as coming from the wrench, or he is incompetent as hell!

It is highly unlikely a new engine is needed. Moreso a new engine would not fix any of the problems you described.