passkey system fault

i got that this morning when i got my car started, i've had problems with the car starting, it just would sit there no turning over, well I talked witha mechanic after replacing the starter, battery, and ignition switch and he says its the nuetral safety switch which I need to replace, its not that much but I was a little confused when the passkey system fault showed up. The tach and speedometer is also going haywire, but thats been like that for a while and I know its a ground problem with the tranny and the harness. so i just have to go find it, but any info would help.

about 4 weeks ago the same thing happened to me. i had to have car towed to garage. the computer kept saying clean key wait 3 minutes. so i waited 3 minutes and nothing happened. anyhow they changed the resister in ignition and now everything is fine. total bill was 105.00 dollars. hope this helps. let me know what happens.