My service engine soon light came on,did a code check,got a P0141,P0142,P0462 on 1998 Cadillac Eldorado

Now it's got to where it spins more before starting, and when I first start it in the morning it skips for about a min. then runs great.. Can you help me?

Asked by for the 1998 Cadillac Eldorado
P0141 is bank 1 sensor 1 heater circuit malfunction, P0142 is rear most O2 sensor malfunction, P0462 is FUEL LEVEL SENSOR CIRCUIT LOW VOLTAGE. Poor running would more likely be O2 sensor related than fuel level sensor related.The cause of the codes need to be investigated and cured, but you may find the problem is unrelated to the above codes.