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What can cause a very high idle on a 1991 F-250 with a 5.0L other than a vacuum leak?

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βˆ™ 2006-09-11 01:42:45

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Common problem.. The "Idle Air Control" valve (IAC) is the usual culprit. It is located on the throttle body.

2006-09-11 01:42:45
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Q: What can cause a very high idle on a 1991 F-250 with a 5.0L other than a vacuum leak?
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