CHEVROLET OBD1 CODES CODE 21

Getting One Code 21 Tps Voltage High. Tested The Tps With Voltmeter Across Blue And Black Wire And With Ignition On Throttle Closed Got Like...

I Have Codes 21, 32, 34, And 45.I Recently Took Apart My Tpi(plenumn And Runners Only) To Clean It Out From All The Built Up Carbon Then...