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International Automotive Technicians Network
Re: 08 Chevy Express-high idle/surging
Posted to Technical Discussion Forum on 8/12/2020

What does the scan data PIDs look like for the throttle body? Steady or fluctuating? Might need to use a scope to see if the sensor voltage is steady or dropping out, might be worth it to scope the power supply lines for the throttle body too.

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