high idle
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Strange idle issues with 4.8 (SOLVED)
Hello! I have a 2000 Silverado 1500 with the 4.8 that has 140,000 miles on the engine. It’s been acting strange recently. If I drive it for over an hour at highway speeds or for over 30 minutes in stop and go traffic, the engine will start to idle at 1,000 RPM. If I shut the engine off and then...- DarkNinjaSG
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- 4.8 high idle iac vortec
- Replies: 24
- Forum: Engine & Performance
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