Question about 1999 Mitsubishi Eclipse
Its most likely a vacuum leak or the throttle needs to be adjusted. Check that there is a small amount of play in the throttle cable between the bracket on the back of the intake manifold and throttle body. If there isn't, the throttle body may not be closing all the way.
Other possible causes:
The coolant temp. sensor is giving an incorrect reading. When the sensor reads a low coolant temp., like when you first start the car and the engine is cold, your idle will be high. As the engine warms up to operating temp (about 200 F) the idle speed will decrease. Idle speed should be around 750 rpm when the car is fully warmed (800-850rpms fully warmed with a/c on).
The idle air control motor may be stuck open.
Posted on Sep 30, 2010
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Nov 05, 2012 | Cars & Trucks
Sep 15, 2012 | 1998 Volkswagen Beetle
Mar 02, 2012 | 2002 Saturn VUE
Aug 09, 2011 | 2001 Chrysler PT Cruiser
Apr 25, 2010 | 1996 Toyota Corolla
Apr 20, 2010 | 2001 Hyundai Santa Fe
Jan 14, 2010 | 2002 Toyota Celica
Nov 04, 2009 | Hyundai Motor 1994 Scoupe
Jul 16, 2009 | 1997 Lincoln Town Car
Sep 09, 2008 | 2003 Mitsubishi Lancer
283 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: