I have a 1993 nissan sentra that had a throttle position sensor that read bad voltages so i replaced it. The new sensor should read close to 5 volts at idle but the lowest i can get it to read is 7. could this be a problem with my ecu? I am also getting some rough shifting out of first gear, the more throttle applied the rougher, any relation to the tps readings? Any help appreciated Thanks
More likely a bad or improperly installed new TPS or a heavily varnished throttle plate not allowing the throttle plate to close fully....or, the engine is still cold and needs to be warmed up before you adjust the TPS.
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