1989 Buick Century "engine idle" Questions

Engine runs rough when idling Replaced head gasket and engine idles rough and has poor gas economy. Check the firing order, The push rod has 2 differnent sizes for intake and exhaust, If they get ...

...engine should increase in idle speed and then switch to a lower idle speed. This is part of the EGR system check and it adjusts as the engine increases in temperature. There are several other reasons ...

engine warms, it should idle down to normal. Have you allowed it to continue its fast idle to see if it idles back down? Your post indicates that you turn it off and re-start to prompt the car to idle

...engine test with a scanner and see what code comes back for the idle problem. This tests requires a trip to a well equipped shop or the dealer service dept. This ias not the passive test you run at ...

...in park..when i release the gas pedal the engine wont lose power have to hold foot on brake possible dirty throttle body/idle air control motor, or broken vaccuum hose..if any questions, ask ...

...engine holds idle, you need to replace the egr valve. The egr (EXHAUST GAS RECIRCULATION) valve allows the engine to re burn the exhaust gas when the engine is cold to clean up the emissions at the ...

idle is the radiator fan is not running or pulling enough air thru the radiator. If you have a fan for the engine and one for the ac, the engine fan may not be working. The radiator fan should come on

...on the throttle body. its function is to allow air around the throttle butterflies when the motor is at an idle. when they go out you engine starves for air at an idle and stalls. hope this

...engine light has never cam on. The car will idle so fast I have to hold the brake while going up a hill. What is the dill with it? Some kind of sensor ore what. Sounds like your throttle position ...

...idle speed control valve and throttle valve. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake ...