How to set the base idle

How to set the base idle - Answer these questions. Does your idle surge? Does your engine idle too high? Does your engine idle too low? Does your idle keep going up and down? Well if you answered yes to any of them then you might need to know something...

Answer these questions. Does your idle surge? Does your engine idle too high? Does your engine idle too low? Does your idle keep going up and down? Well if you answered yes to any of them then you might need to know something....How to set your base idle.

Note: If you do experience any of the above you will want to try cleaning both your idle motor, and throttle body and you'll want to set your TPS voltage.

  1. Disconnect the battery's negative terminal to reset/clear the computer's memory. Leave it disconnected for 30 minutes. Disconnect the plug going to your idle motor which is located on the front of your throttle body.
  2. Reconnect your battery's negative terminal.
  3. Start the engine, and set the idle to the rpm you want with the stop screw on the bottom of the throttle body. (arrow)
  4. Turn off the engine.
  5. Reconnect the plug on the idle motor.
  6. Make sure all accesories (radio, blower motor, a/c, lights, etc) are off and start the engine.
  7. Let engine run for two minutes.
  8. Turn engine off and wait two minutes then restart engine and let idle for two minutes with all accesories on.

If everything was done properly the EEC-IV (read: computer) should have learned it's new idle.



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