LABulldog

I have the original carb and electric choke on my car. Lately it appears that the choke linkage is sticking after start-up because idle speed stays between 1500 and 2000 (makes for lousier gas mileage!). I can nudge the linkage and it will release and the the rpms will drop to a normal range of around 600-800. To add insult to injury, my choke light , which normally goes off after a couple of seconds, has started staying on continuously. Even after kicking the choke down, the light stays on. I can unplug the wire at the choke and the light will go out (plug it back in and the light goes on). The questions I have are these: 1) Is my choke acting up and if so, what can I do to fix it? & 2) Is the sticking linkage a precurser to a carb rebuild (I'd lay money that the carb has never been torn into.)? Any help, ideas, suggestions or comments are greatly appreciated. Thanks in advance!

:steering: & :seeya

clem zahrobsky

sounds like the oil pressure/choke power sender is bad. it is there to prevent the electric choke from getting power till the oil pressure comes up after the engines starts. it is located behind the distributor on a small block. you should see a full 12 volts at the choke wire as soon as the engine starts :chevy


[Modified by clem zahrobsky, 7:27 PM 3/7/2003]

LABulldog

Thanks for the reply Clem. I do get oil pressure on my guage at start up. I'll check the voltage at the choke tomorrow. If I get less than 12 volts, would that suggest a bad sending unit also?

clem zahrobsky

check the choke voltage at startup and it should be 12 vdc and if it is not follow the wire to the sender and make sure you have a good connection. :chevy