Quote:
Originally Posted by saumil
Remove and plug the vaccum line going to the brake booster and see if the idle becomes regular again.
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This is good advice. It's simple, quick, and best of all, doesn't cost anything. Give it a try.
IMHO however, I think the problem is the throttle actuator. With age, the actuator motor gets tired, and has a hard time overcoming the resistance of the throttle return spring.