Curb idle setting 1985 Motorcraft/Holley 4180C

[limp]

I wanted to say this was my sisters daily driver from 84 to the mid 90's when she said it blew up...
She claims the carburetor always gave her problems... Not sure if she meant for emissions check as she is a Californicator and I know that big brother is watching you there......
One reason I didn't waste any time with it, and purchased a new carb........

 

[General karthief]

I'm only try'n to help here as are the other's. Only difference is they are more smarter than me
seems to me you've treated the symptom now you need to find the problem, why does the throttle now not extend all the way back?

 

[limp]

As the General says, there should be 3 screws that hold the black choke part on..
Personally I would loosen those and twist it so the choke isn't even working to take it out of the search for whats causing this.
There is also a Choke pull off, that applies vacuum to the choke flap when the car starts... Check if its working.. If its losing vacuum and allowing the choke flap to come back on, even a little bit, this could raise your idle....... Pull off the vacuum line to it and attache a hand held vacuum pump and see if it holds vacuum.....

Best way to adjust your choke is to do this in the morning after letting your car sit overnite.. ... DO NOT turn the key on at all... You do not want to heat up your choke coil..
loosen the 3 screws and adjust it so the choke flap just barely opens or starts to open... Tighten the 3 screws and that at least gives you a good base to start from.. Although my experience has been that there is usually no need for more

You have been giving many things to check by people on here... Can you tell us what you have done so far?????

Again, after looking over my old carb, I did NOT see a choke pull off on it, so maybe these do not have one??