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Q: what is causing my truck to have a high idol when warm its at 1500. When I start on 1995 Chevrolet 1500 Pickup

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
it cold the idol is about right tell it warms up and jumps to 1500. I have changed idol control valve and throttle control valve also, but now change.
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