I understand there is no choke it is called a cold/start which put more fuel
into the engine when starting this from cold of which i have 2 issues the one i have just mentioned it wont kick in the cold start allowing the car to idle at slightly higher revs until it warms up then once it is warms it idles fine.

And the other issue is the ford fault code P1504 IAC malfunction we have tested this and replace this for 2 brand new ford ones of which no joy we have checked the wiring from the IAC valve striaght back through to the ecu and the voltage seems to read fine, we have checked all vacume pipes cleaned the carb and tested and cleaned the MAF unit also and even put a second hand working one on from another puma.
we are stuck with both of the above problems and we can't resovle this any help would be most greatfull