1998 Jaguar XJ8 BRAND NEW ENGINE INSTALLED 12/10/2008

Dear Dave you were right the cable slipped out I slid it right back in no further issues, I am now suspecting the TPS needs to be replaced, I cleaned the Throd Bod, MAF, new filter, plugs and checked OS and the limp home is still coming on. I made the mistake of putting a lower octaine cheaper gaoline in the Jag and the intake was god awful dirty and sticky, I found an owner of a jag who replaced his TPS without buying the entire unit is this plausable, I cannot trust anyone to work on my Jaguar but me and I really do not want to spend the money to replace it all, It is not all bad just the sensor please advise your opinion is very important to me, thanks

Spill caused short in console phone and drained battery, replaced battery, checked alternator, starter on pins cranked fine, relays fuses all positive joints getting 12.57 from battery all inside lights and controls work fine 100% power yet car will not start, I turn key hear nothing but open, no crank acts like dead battery