Bronco 92 idle problem

[saul]

i have a problem with a Ford Bronco 5.8lts 1992, all happens when the alternator fails in highway and i start change bateries and jump charge until i get to my home , after that i fixed the alternator and the car start revs up and down , the only way to let it work so so ,it´s unplug tps , but it doesn´t perform good , the tps pluged have like 1.75volts for return signal because , the voltage reference it´s like 5.18volts , i´ll forced ground sensor direct to the batery and that drop me voltage reference at 5volts , but still get 1.57 at tps , i remove screws and adjust tps at .80volts but the problem still present , it idles bad and rev up and down , i´ll change isc with out changes ......i check all grounds and power leads ....... i plug other computers i found (really i don´t know of wath cars are ) but it does the same problem ......... i need help .....thanks

[juan2]

have you checked for a/c voltage at battery?
not sure i think anything higher then 300mv will
cause problems.
also ck. for codes

[bwc13]

try your iac

[97chevyman]

How about a MAP sensor.