High Idle

ktm1217 · Nov 16, 2011

My truck gets a high idle to it as its moving...when im stopped, it idles normal, but when im moving the motor stays revved up when i take my foot off the gas. I tired coasting down hill in neutral from a dead stop and as soon as i got to 2-5mph, the idle jumped up to like 1200 or so...any ideas on this one? lol

Mopar1973Man · Nov 16, 2011

Any error codes present? Just because there is no check engine light doesn't mean there isn't at least 1 quiet error code.

ktm1217 · Nov 16, 2011

Mopar1973Man said:
Any error codes present? Just because there is no check engine light doesn't mean there isn't at least 1 quiet error code.

nope, no lights on the dash...all the gauges are where they should be too, except the tach lol

ramhunter9 · Nov 16, 2011

What Mike was saying is ther could be a code that does not trigger a cell .. get it scanned

ktm1217 · Nov 16, 2011

actually, now that i think about it, im pretty sure its a vacuum leak bc i had problems with the idle being jumpy too not too long ago. I just never go the chance to check for a vacuum leak lol but ill do that hopefully tomorrow..

Mopar1973Man · Nov 16, 2011

ktm1217 said:
nope, no lights on the dash...all the gauges are where they should be too, except the tach lol

ramhunter9 said:
What Mike was saying is ther could be a code that does not trigger a cell .. get it scanned

Exactly... It might be a minor error code for something...

ktm1217 said:
actually, now that i think about it, im pretty sure its a vacuum leak bc i had problems with the idle being jumpy too not too long ago. I just never go the chance to check for a vacuum leak lol but ill do that hopefully tomorrow..

That is possible to if you got a ScanGauge II you'd be able to see the MAP sensor is off from the vacuum leak. But also be able to check for error codes as well...

www.scangauge.com

ktm1217 · Nov 17, 2011

well, today after school i went under the hood of my truck and since i didnt have any carb cleaner, i had to use brake cleaner and sprayed the vacuum line for the brake booster....nothing. sprayed around the base of the intake manifold and got some bubbling :/ the trucks got 141K on it, and the previous owner said the motor was replaced but had no proof of it. So as far as i know, that could be the original gaskets on that. But those were the only two spots i sprayed, i wasnt too sure what else to go for to spray. So now i know that intake leaks a bit though....

High Idle

ktm1217

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Mopar1973Man

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ktm1217

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ramhunter9

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ktm1217

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ktm1217

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