i have been haveing trouble with mobile phone masts interefering with the immobiliser on my 1997 facelift jeep how do i bypass it or is there any other mod i can do.
Bypassing it will not be easy as it will have been designed to make that difficult for obvious reasons. If you know where the unit and aerial is you could try shielding it with some aluminium cooking foil to alter its characteristics.
A new battery in the remote might help as well.