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High idle

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Old Sep 7, 2019 | 10:28 PM
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Johndrl's Avatar
Johndrl
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Default High idle
Hi I have a 1998 ram 1500 4x4 5.9 gas and after replacing the tps and the iac valve I still have an idle at around 1600 rpm other than vacuum leaks is there anything that may cause this issue?
 
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Old Sep 7, 2019 | 11:27 PM
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Torxhead
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Worn out throttle shaft or stuck iac valve. I would think you would have some vacuum lines that have not been replaced though. Somehow extra air is entering the engine.
 
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Old Sep 8, 2019 | 10:24 PM
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2bit
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Try disconnecting the battery to reset the computer first. Also, what brand IAC and TPS?
 
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