choke problem i think

[koppenhaver]

okay so for some reason it seems like my choke keeps coming on when it shouldnt like sometime if i tap the gas and let off of it, the truck just keeps going like a stuck throttle till i push the pedal down to kill the choke. is the any part of the choke that could have gone bad by maybe gettin wet or something. any suggestion or comment.

 

[RonD]

Probably not from getting wet but it may just be getting older.
Most automatic chokes have a bi-metal spring that is warmed up and will hold the choke open, some had a "fast idle motor" that can increase idle when cold.

Good PDF here on those carbs and how they work.
Google: rangerstation 2150 carb

 

[cammeddrz]

is it the factory TFI carb? it had an idle solenoid

 

[koppenhaver]

yes it is the factory carb

 

[martin]

There is a fast idle cam as part of the choke mechanism, if the choke is not coming off completely it will not allow the cam to drop down completely.