Rick's Free Auto Repair Advice

Posts Tagged: High idle at startup

High idle at startup Honda

Fix high idle at startup on my Honda Honda vehicles may exhibit a high idle at startup that can run as high as 2,000 RPM. As the engine warm, it idles down to around 1,500. But that’s still too high. On ‘90’s and early 2000’s vehicles, Honda used an idle air bypass valve that’s controlled by a thermo wax pellet. Coolant runs through the idle control valve and as the coolant heats and melts the was, the valve gradually decreases air bypassing around the throttle plate. Coolant debris can build … Read More

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