It could be your TPS, throttle positioning sensor. At least, that was the case with my 89 prelude.
What causes a car to idle good and run rough when you give it gas?
air leak
air leak
Vacuum leek
i think it causes bad/rough idle
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The idle could be a number of things. A basic tune up might be needed. They are also common to get minor vacuum leaks that will cause it to idle rough. The only light is a bad thing. It means you do not have enough oil in your motor. So when you are stoppong it is sloshing away from then sensor and you accelerate it gets back to it. Check your oil level and add oil or I would replace it because it probably over due anyway.
I would suspect the idle speed motor is faulty. Does the motor sometimes idle fine and then other times rough? They are about $100.00 last time I had priced one. Your dealer can price one and print out a picture of it and where it is located so you can recognize it.....1930fcoupe
MAF senso, or transmission fluid.
You broke it. Way to go.
check dist. cap for water
There are several things that can cause your 2004 Chevrolet Trailblazer to idle rough. The most common causes are a dirty fuel filter or a dirty air filter.