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High Idle Question

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Old 04-19-2017, 08:02 PM
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Year: 1997
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Engine: 4.0 inline 6
Default High Idle Question

When I take my foot off the brake, the jeep starts rolling forward without any accelerator applied... idle feels high/a bit rough. When giving it gas, and then releasing, when tach comes back down, get a bit of a ragged engine feeling, somewhat bogging down. Also have occasional rough start, as if somebody smacked the engine with a hammer as it starts...

Thoughts?
Old 04-19-2017, 08:28 PM
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Originally Posted by mtyson
When I take my foot off the brake, the jeep starts rolling forward without any accelerator applied... idle feels high/a bit rough. When giving it gas, and then releasing, when tach comes back down, get a bit of a ragged engine feeling, somewhat bogging down. Also have occasional rough start, as if somebody smacked the engine with a hammer as it starts...

Thoughts?
clean throttle body and IAC
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