
2007 Chevrolet Impala LS 3.9L Poor Idle Quality, MIL Lamp on, idle will raise
Another tech has a impala came in with po121 code and customer complaint of surge. Technician replaced air box(airfilter box with maf sensor in it)The vehicle appeared ok, did not surge but after driving 20 minutes idle started to raise and was running at arou...
FIX posted 2/9/2010
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Message Closed w/FIX
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VIN | 2G1WU58R17 |
Engine | 3.9 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | Poor Idle Quality, MIL Lamp on, Idle Will Raise |
Occurs | Hot, Intermittently |
Trouble Codes
P0121 | Throttle Position Sensor Range/Performance |
P0507 | Idle Speed Control System Higher Than Expected |
Message Closed w/FIX
Vehicle Data
2007 Chevrolet Impala LS
VIN | 2G1WU58R17 |
Engine | 3.9 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | Poor Idle Quality, MIL Lamp on, Idle Will Raise |
Occurs | Hot, Intermittently |
Trouble Codes
P0121 | Throttle Position Sensor Range/Performance |
P0507 | Idle Speed Control System Higher Than Expected |