im about 5000 miles from san diego but i have recently adjusted my tps and it isnt too hard, try this site and the instructions should help, you will also need a gap measurer and then you should be fine, just set the meter to read in ohms and this will read your impedence,any more help just ask :-)
http://www.cygnusx1.net/supra/library/TSRM/index.html