Many possible causes , unless you get it scanned , just guessing . Here are a few suggestions from Mitsubishi forum which might help you .
Location: UK
Drives: 2000 Chariot MX GDi Auto
Sounds likee original garage has just adjusted throttle cable to stop it stalling - not the right way to do it. This explains high revs and poor economy.
Get a decent garage to do a check on your temperature sensors, knock sensors and lambda sensor. If these are not within range or faulty, it will cause some of the problems you describe.
Check all air connections from airflow meter to manifold and make sure no leaks. Also check there are no vacuum leaks on the brake servo hose.
If the throttle body has been cleaned out, I wonder if the sensors on it were reset correctly. I would try disconnecting battery for 10 minutes. Once reconnected, turn ignition on - do not start car, but turn it off within less than a second. This should allow ECU to reset the sensors and ECU.
Posted Sep 13, 2010 (14 years ago)