bad or mis-calibrated electric choke

[cootvon]

my rpm's are all over the place. some days i'll get 10 miles down the freeway, pull off on my exit and the darned thing is still jacked up. if i were to turn the truck off, back on... let the choke rev it up, then tap the gas.. usually it will go back to a smoothe idle, but 90% of the time it doesn't.. it stays high until it decides when it is good and ready to go back to normal. It also will not work at all sometimes..giving me a lower than normal idle..but then an hour later i can hop back in it and it revs up again.

so is it not adjusted correctly, or is it failing or both? i assume that it is sticking both "open" and "closed" but i'm not really an expert obviously on how these things work. could rpm's all over the place be something different? i assumed that the choke is the only thing that can hold the rpms that high...and then be normal the rest of the day. heck i could probably drive the 15-20 miles to work in the mornings without touching the gas pedal!
btw.. it's the edelbrock 650 cfm performer... could it also be a sticking carb?

thanks for any insight
Jeff

 

[Cavalry]

make sure the linkage is lubricated (dont saturate it just point oil) A lot of times the linkage binds and choke does not work.

when cold the choke should be fully closed. I assume you have an electric choke? I have had edelbrock chokes go bellyup in less than a year. Start it up and it should start to open in a few mins. you will need to bump the throttle a few times to know down the idle. If it dosent move at all it is either not working from a electrical standpoint or is way out of adjustment

 

[wildbill]

That sounds like the fast idle cam is sticking spray some carb. cleaner on it and make sure it is free good luck. Bill %) ;D

 

[cootvon]

man wildbill.. that's a lot of smilies!

thanks for the info guys.. i'll go get some cleaner and check the linkages... then go back to the choke.

 

[eb66to77]

I agree with the fast idle cam. I had that problem with my edelbrock.