Not likely to be so. Changing back the connectors should get it back running. Most likely the TPS is out of specs or not installed correctly.
Was the TPS replaced with new or used? Recheck its installation, it has to be seated correctly.
Recheck any ground wires that was removed while performing spark plugs replacement. One of it is on the firewall. Any bad grounding circuits can cause intermittent faults codes to be triggerred.
IAC wires are ORANGE/BLACK, PINK and BLUE.
TPS wires are LIGHT BLUE/BLACK, BLUE and BLACK/ORANGE.
MAP sensor are LIGHT BLUE/BLACK, BROWN and BLACK/ORANGE.
Ensure they are in the correct position. Check the connectors for signs of contamination and corrosion.
Perform the following TPS functional check to see if it is functioning correctly.
1. Turn ignition off. Disconnect TP sensor 3-pin harness connector. Measure resistance between TP sensor connector terminals No. 1 and 2 (component side). Standard resistance value should be 3500-6500 ohms. If resistance is as specified, go to next step. If resistance is not as specified, replace TP sensor.
2. Measure resistance between TP sensor connector terminals No. 2 and 3 (component side). Open throttle valve slowly from idle position to wide-open throttle position. Resistance should change smoothly in proportion to the throttle valve angle. If resistance changes as specified, go to next step. If resistance does not change as specified, replace TP sensor.
3. Reconnect TP sensor harness connector. Connect scan tool to Data Link Connector (DLC). Turn ignition on and monitor for TP sensor PID value. Voltage should be 0.25-0.80 volts at idle position and 4.25-4.70 volts at wide open throttle. If voltage is not as specified, replace TP sensor.
Interchanging the wires should not cause the TPS to be fried, the PCM is more likely to be fried instead.
Wednesday, March 30th, 2011 AT 9:56 PM