Question about 2003 Hyundai Tiburon

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My car is high reved at 2000 rpm wont go down

I have a 2003 tiburon 5 speed, i currently replaced the throttle position sensor, mass air flow sensor and rebuilt my throttle body. When i turn it on it stays on 2000 rpm??? what can i do next, people tell me it might be the ecu but i dont know..

Posted by chuck9191 on

  • chuck9191 Sep 30, 2009

    look into the ecu and replace it

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Anonymous

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Have you tried just disconnecting the battery for a half an hour or so? Your ECU probably just needs to forget what it has learned and relearn it.

Posted on Oct 03, 2009

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P0068-MAMFQLD PRESSURE/THROTTLE POSITION CORRELATION
' Image
Theory of Operation
This DTC sets when an unexpected high intake manifold air flow condition exists that
can lead to increased engine speed and puts the NGC into a High Air flow Protection
limiting mode. The High Air flow Protection feature includes RPM limits for when a
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When Monitored
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Set Condition
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Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.
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OBDII P1123 Fuel Trim Additive, System Too Rich


the obdII P1123 is a error refer to Air/fuel controller


OBDII P1123 Fuel Trim Additive, System Too Rich

the following info is a copy/paste of HMA service:


PRIMARY COMPONENT:

Air/Fuel Control System

SECONDARY SENSOR(S):

Mass Air Flow (MAF) Sensor
Throttle Position (TP) Sensor
Intake Air Temperature (IAT) Sensor
Engine Coolant Temperature (ECT) Sensor
Oxygen Sensors

FAILURE CONDITIONS

If the air/fuel mixture at idle is too rich for more than 30 seconds during two back-to-back trips, this code will be set and the Malfunction Indicator Light (MIL) will be turned on.

Details:


The code will be triggered if the following conditions are met:

Long term fuel trim value (additive) is less than -0.75 ms (-15% to -20%) for 30 seconds or more
Engine speed is less than 880 RPM (1000 RPM, 2.0L Tiburon)
Mass air flow rate is less than 6.1 g/s (7.5 g/s, 2.0L Tiburon)
Engine coolant temperature is greater than 158°F (70°C) [176°F (80°C), Accent]
Engine in closed loop operation
No canister purge occurring

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