I just bought a 1990 Buick Century from a friend. The car has 64,000 miles on it. I knew the following when i bought the car (for 500.00)
When you stop at a red light, if the car is hot, the idle gets a little rough where you have to rev the engine a little....
After driving the car, and you put the car into park the engine idles even rougher...
Any clues what could be causing this...
Last year the car had the fuel injectors cleaned, the gas filter replaced.
3 months ago the radiator was replaced