Why do I have to replace speed sensors and pulse generators so offen? on 2002 Hyundai Accent

I have had to replace either my speed sensors or pulse generators every 1 1/2 to 2 years. Why am I blowing them? The mechanics have looked at the electrical harness and the computer and said I could replace them but with over 146,000 miles-it is easier to keep replacing the sensors and generators. Is there a recall on this problem through either the government or Hyundai? I have heard from others that the problem might possibly be Over Drive is shorting out or shift solenoid etc. Apparently a big problem with this year.

Asked by for the 2002 Hyundai Accent
You can call the dealer with the vin number for recall info.
already asked them-there is no recall on them.
That was what you ask in your posted question!! Thus my 'answer 'on 1-28-2014! It wasn't a suggestion.
It doesn't matter anymore as I junked the car as it was too expensive for me too fix.