Rick's Free Auto Repair Advice

Posts Tagged: high ldle

Diagnose a high idle problem

What causes a high idle, fast idle? Here are the most common causes of a high idle, surging idle or fast idle: An air leak can cause a high idle — An air leak is unmetered air and causes a huge problem for the engine computer. Most late model vehicles use a mass airflow sensor (MAF) to measure how much air enters the engine so it can determine the proper air/fuel mixture. You’ll find the MAF sensor located right after the air filter box. The delicate wires in the MAF … Read More

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