High idle

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Mar 17, 2021 | 08:25 PM

jalopieford

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High idle

I have a 1996 f150 5.0 2wd that's high idling in park and neutral, although sometimes it idles fine. i've replaced the iac and coolant temp sensor not really sure where to go from here.

Mar 18, 2021 | 09:40 AM

wde3477

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From: Cape Girardeau MO

Welcome to the site!
If you haven't already, suggest to look for vacuum leaks, including the brake booster unit.

Mar 18, 2021 | 11:31 AM

jalopieford

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Thanks for the advice when I get home ill look at them and mabey replace them.

Mar 18, 2021 | 10:25 PM

jalopieford

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Update I replaced all the vacuum lines and I still have the high idle and suggestions of where to go from here.

Mar 19, 2021 | 11:42 PM

Shagg

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From: Virginia

When you say "high", what rpm is it sitting at?

Mar 20, 2021 | 01:51 PM

jalopieford

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Quote:

Originally Posted by Shagg

When you say "high", what rpm is it sitting at?

It was sitting at around 1000 to 1100 but I replaced the throttle position sensor and its no longer high idling.

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