Sission brand electric choke 48 Dodge

[Ed McDermott]

Question on the electric choke.

My 48 Dodge D24 Fluid drive  has a Sission electric choke which has not been  operational.  I removed, it cleaned, all including electrical terminal. After which and still off the car the electric solenoid worked and moved the linkage for the choke plate on the carburetor.

The way the coke is supposed to work is that the electrical signal from the starter switch  pulls in the solenoid and temporarily set the choke plate based on the position of the choke metallic thermostat.  Qnce the starter switch is released the choke will remain set if the thermostat is cold and time out as it warms up.  If the thermostat is warm then the choke will not set the choke plate to a closed position.  The following is my question.

With the choke removed from a cold soak and setting on the bench, and the choke is initiated with an 6 volt signal.  The choke solenoid sets but does not hold its position after the the 6v signal is removed and I am trying to figure out what holds the choke when cold.   I have a cross sectional drawing  view of a Sission  choke and my choke seems to have all the correct parts.   Does anybody know if the metal thermostat (which is a v shaped metal 3/8 wide  wedge shape is a bi-metallic material or just a steel v shaped metal material.  I believe its the change in the open measurement of this V shaped material ( a function of temperature) that control both the holding quality of the choke at cold temperatures and its change with temperature. If the metallic v material is steel then I think the V shape needs to be opened up in order to hold the choke setting.  But before tampering with the V shaped metal strip i though I would ask for help.  If its bi- metallic then I think its failed.  The other possibility is that I don't know what I am talking about.  Any help would be appreciated.

Ed

[Sniper]

Did you see this?

 

 

[Ed McDermott]

Thanks

Great help and your previous responses to some of my questions were great.

Ed

[Doug&Deb]

Hold the throttle half way down before hitting the starter. This sets the fast idle cam and holds the choke closed until the engine warms.