93 Probe GT CTS (Coolant Temp Sensor) ??

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I just did the trouble code check that one of the members told me how to do without the computer adapter. The only code that keeps flashing is 9 short flashes. It will pause for a couiple of seconds and then flash 9 short flashes again. That is the only flashes it will do, 9 short flashes. I looked that up and it says the Coolant Temperature Sensor is the problem. Will this cause the engine to surge as the engine warms up. If this sensor is sending the wrong information, what type of problems will it create (ie, surging, stalling, etc) Thanks.