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Idle control issue/ diagnostic mode action
Customer complaint of high idle and driveaway in gear. It idles 900+ RPM w/IAC count approx. 32. In drive, 730-750 RPM w/ IAC count 54 and dropping, without any significant RPM change. These numbers are not always consistant. I set timing, and checked inputs: ... Login to read more. 
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30 Replies Received
30 Replies Received
| Engine | 7.4 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
1994 Chevrolet K3500 7.4L
| Engine | 7.4 L |
| Trans | 4-speed Automatic (Electronic) |
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