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92 Boneville IAC
Posted to Technical Discussion Forum on 9/21/2003 18 Replies

Hi everyone.

I need some help interpreting this [1992 Pontiac Bonneville, ISC Waveform] waveform of an IAC motor. Engine starts and stalls mostly when warm. On cold and hot starts it is OK. PCM is reseting IAC to 70 counts, cold or hot which seems low to me,... Login to read more.

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