Honda Civic Idle Problem?

I have a 1.5L carby 1993 civic hatchback, and it runs well except I have an idling issue. It will stick at 2000rpm for the first 5-10 minutes of driving, and then at a set of lights of when I stop the idle will just drop from 2 straight down to 1000rpm and stay there. Also, on a short trip where the idle does not drop below 2000rpm, when I turn the car off it will burble and keep running even when I have turned the key off. However, this only occurs when the rpm is at that 2000rpm range, not at 1000. What is going on?

Sounds like your choke needs to be cleaned as it is sticking open too long or the choke pull-off mechanism is not working properly - pretty easy fix one you figure it out - My guess would be the choke pull off is failing.

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