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International Automotive Technicians Network
2000 Chevrolet Impala 3.4L High idle
Posted to GM Driveability on 10/21/2008 8 Replies

This vehicle came in originally for an intermittent stall. Checked IAC motor and found it sticking. Replaced and cleaned out throttle body. Came back a while later still stalling and now with TP sensor codes and a MAF sensor code. Tested and replaced MAF senso...

8 Replies Received (View Replies)

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Message Closed w/FIX

car Vehicle Data

2000 Chevrolet Impala

VIN 2G1WF55E2Y
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsHigh Idle
OccursIntermittently

Trouble Codes

P0122Throttle Position Sensor Circuit Low Voltage
P1122TP Sensor Signal Higher Than Expected
Message Closed w/FIX

car Vehicle Data

2000 Chevrolet Impala

VIN 2G1WF55E2Y
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsHigh Idle
OccursIntermittently

Trouble Codes

P0122Throttle Position Sensor Circuit Low Voltage
P1122TP Sensor Signal Higher Than Expected