got an answer from ITR section of H-T

Yes an intermittent TPS signal wiill cause the symptoms you described.

Unfortunately, you can't replace the sensor side of the connector without replacing the sensor itself. And you can't buy just a sensor new, you must get the whole throttle body.

The bolts that attach the TPS to the throttle body are broken off from the factory. They didn't want the sensor to be replaceable. You can slot the bolt heads with a cutoff wheel and turn them out with a screwdriver to replace the sensor. However it will need to be calibrated within spec (clocked) or you will throw TPS codes for signal range.

You have three options:

1) Attach the connector in a way that it will not seperate. Perhaps wrap it generously in safety wire and/or tape, around the harness side connector and then around the TPS. itself

2) Replace the TPS with a used one (can find them online, but be careful because usually they have been removed for a reason... as in they are already bad) and calibrate it (requires multimeter & spec sheet).

3) break more off of the sensor side connector so that you can solder leads onto the pins (and insulate them sufficiently), then splice into you engine harness behind the grey connector.

Personally I would try #1 and then goto option 3.