Question about 2008 Mitsubishi Lancer
Check enginelight is on.idle is sluggish on acceleration. poor fuel mileage. OBD says throttle position sensor.
Yeah, if I were you, I will erase the fault code with your OBD2 car code scanner first. If the engine light on, there must have some questions on the throttle position sensor, I will fix it.
Posted on Dec 11, 2012
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Posted on Jan 02, 2017
first thing to do is remove spark plugs and if they smell really fuely you will need to change them if that doesnt help you will need to get the microtech tuned for a good coldstart , this depends on if its running stand alone or as a piggy back
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Posted on Jun 30, 2008
Does this car have its original ECU? I ask this because this and a number of early 1990s Mitsubishi cars/truckas had isses with capaciors leaking. In truth I believe it is a matter of when and not if. As the ECU begins to fail the engine can begin to run poorly ( I speak from experience after changing both ECUs in my Montero and my son's Doge Stealth (3000GT) ) I did have an issue too with my son's Stealth running poorly, by good luck I happened to be looking under the hood with poor lighting and noticed a faint blue spark from the wiring leads by the coil after a good look I fould a wire would ground out when the engine was throttled; this caused the engine to torque slightly causing the wire to rub and finally ground out.
I hope this may have helped,
Posted on Oct 10, 2009
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Nov 20, 2016 | Hyundai Cars & Trucks
Limited throttle mode--The ECM will continue to use the accelerator pedal for throttle control, however, the maximum throttle opening is limited.
Throttle default mode--The ECM will turn OFF the throttle actuator motor and the throttle will return to the spring loaded default position.
Forced idle mode--The ECM will perform the following actions:
Limit engine speed to idle by positioning the throttle position, or by controlling the fuel and spark if the throttle is turned OFF
Ignore the accelerator pedal input
Engine shutdown mode--The ECM will disable fuel and de-energize the throttle actuator.
Did you have it checked for DTC's - diagnostic trouble code's related to the reduced engine power ?
All so has APP sensor gas pedal !
Accelerator Pedal Position (APP) Sensor
The accelerator pedal contains 2 individual accelerator pedal position (APP) sensors within the assembly. The APP sensors 1 and 2 are potentiometer type sensors each with 3 circuits:
A 5-volt reference circuit
A low reference circuit
A signal circuit
The APP sensors are used to determine the pedal angle. The engine control module (ECM) provides each APP sensor a 5-volt reference circuit and a low reference circuit. The APP sensors provide the ECM with signal voltage proportional to the pedal movement. The APP sensor 1 signal voltage at rest position is less than 1 volt and increases to more than 4 volts as the pedal is actuated. The APP sensor 2 signal voltage at rest position is less than 0.6 volt and increases to more than 2 volts as the pedal is actuated.
Your best bet is take your vehicle to the dealer !
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How to Check? The MAP has three electrical
pins, one for 12 volts (or 5 volts) reference, one for ground and the third
(the middle one generally) is the 'signal' output. Put a voltmeter positive connector on the 'signal'
pin of the connected socket (back probe by inserting a bit of wire). Apply suction to the vacuum input, even
sucking on it with your mouth, should result in a measurable voltage output. At normal air pressure (open throttle) the
voltage seen should be 0 volts. As
vacuum is applied the voltage output should change to about 5 volts (throttle
closed at idle). If no transition seen
the MAP is faulty.
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