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Code PO 0128 idle air control?

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Old 06-16-2011, 10:49 PM
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Default Code PO 0128 idle air control?
On my phone or else I'd search.


It's a 1978 jeep with a 2002 5.3. Will randomly stall out and then run fine.
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Old 06-16-2011, 11:19 PM
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P0128 is not an IAC code. P0128 sets when the engine coolant does not warm up fast enough as determined by the PCM tracking accumulated air flow over time. Possible causes can be a stuck open thermostat or a bad ECT sensor.
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Old 06-16-2011, 11:28 PM
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Would that cause it to stall?
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