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Old 03-12-2018, 10:54 PM   #1
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Join Date: Nov 2014
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Default Have 7 OBD codes, help appreciated

No CEL illuminated but found 7 codes stored in computer.

Im having an idle surge problem for the past 2-3 months. Surges between 700-900 RPM when stationary, in gear or not makes no difference. If I tap the accelerator at exactly 1000 i can get the idle to remain steady. MPG way down too.

Heres the codes:

P1509- Idle speed control valve opening solenoid control circuit electrical

P0505- Idle air control system

P1550- Idle speed control valve closing solenoid control circuit electrical

P0130- O2 circuit (Bank 1, sensor 1)

P0301- cylinder 1 misfire detected

P0302- cylinder 2 misfire detected

P0303- cylinder 3 misfire detected

Spark plugs, leads, and ignition coil were all replaced recently, leads and ignition coil are OEM. Plugs are Bosch platinum +4. So for now Im thinking to Replace IACV, and pre cat 02 sensor. Any other suggestions?

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Last edited by Estii; 03-13-2018 at 12:19 AM.
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