RPM Guage Jumping what could cause this?

P0122 is throttle position sensor low voltage, P1870 is a transmission component slipping, P1441 is a stuck open purge valve for the EVAP system causing fuel vapors to be directed to the engine when they shouldn't be, P1122 is the throttle position sensor intermittent low voltage, P1106 is the MAP sensor getting intermittent high voltage, P0300 is random/multi cylinder misfire (probably being caused by the MAP and throttle position sensor problems), P0141 is the downstream oxygen sensor on the side of the engine that cylinder number one is on (bank one sensor two) the heater circuit is not working, P0135 is the oxygen sensor heater circuit again, P0122 throttle position sensor low input. So, the thing to do is figure out the common denominator between these three sensors. Definitely sounds like an electrical problem. Don't replace the sensors thinking the problem will go away!! Before replacing the sensors they should be tested before they're condemned!! You can ignore the P0300 misfiring code because that's most likely being caused by the sensor input problems. The P1870, transmission slipping code, is the most concerning! That code might be caused by the other engine problems or there may be something going on with the transmission too. Your best bet is your local Chevrolet Dealer. They can properly diagnose and repair this. But be careful, V6 Camaros are not desirable or worth much so, personally, I wouldn't put a ton of money into it! Especially if the transmission is failing! Good luck to you!! Jim

They probably cleared the codes before you bought it knowing that it would take a while before they came back. Sorry but it sounds like you bought a money pit.