1995 Acura Legend Engine Surges When Cold. Runs Fine When

I have a 1995 Acura Legend that just began surging. When I first start it up (after it has had time to cool down), it surges from about 1000 to 1900 RPM very rapidly.

Once the car has warmed up to operating temperature, it runs fine with no surging.

I was trying to troubleshoot this problem, and this is what I did. While the engine was surging, I disconnected the electrical connector from the throttle position sensor. The car then idled normally with no surging. I did this test 3 different times and had the same result. Whenever the car is cold and begins surging, I disconnect the throttle position sensor electrical plug and it runs fine.

Does this mean I have a bad throttle position sensor? By the way, the service engine soon light has not illuminated indicating a problem. And yes, the check engine light does work.

Any help is greatly appreciated. Thank you very much.