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Start up from no go to too much go####****

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Old 01-07-2018, 04:43 PM
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Default Start up from no go to too much go####****
Finally got my 4.0 to start but it goes to wide open throttled and not just a high idle?. Throttle plate is closed, no stuck gas pedal , been checking the idle air sensor but don't believe that would go to wide open throttle can it.
Thanks again for all the advice so far it has really helped.
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Old 01-07-2018, 05:10 PM
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Sounds like a vacuum leak. a bad one
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Old 01-07-2018, 07:47 PM
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I agree
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Old 01-07-2018, 10:35 PM
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verify that the intake manifold is seated 100%.
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Old 01-09-2018, 06:38 AM
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Originally Posted by s346k
verify that the intake manifold is seated 100%.
It's hanging on a locating dowel or 2...........
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