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First step is looking at what the error codes mean... a quick google search tells you what the generic OBD code means.
P0108 OBD-II Trouble Code: Manifold Air Pressure (MAP) Barometric Pressure Sensor Circuit High Voltage Input Problem.
P2127 code is a generic OBD-II diagnostic trouble code indicating a fault with the throttle or pedal position sensor. This code may be seen with other throttle and pedal position sensor codes.
P2122 OBD-II trouble, or fault, code means that the vehicle's on-board computer has detected low voltage in the throttle position sensor (TPS), which is usually below 0.17 volts.
I'd start by actually measuring what's happening with the throttle pedal sensor as well as the TPS (in the TB). If you have two TB's with the same issue I'd suspect wiring or a connection issue, chances of two being bad are basically impossible. The fact that the first code also sounds like a wiring issue would have me checking the whole harness for signs of damage, and also checking all connections. If oil got into a connector it could be causing all kinds of weird issues.
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