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High Idle Duke by Dspoeth
Started on: 04-08-2011 08:40 PM
Replies: 5
Last post by: Patrick on 04-08-2011 11:59 PM
Dspoeth
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Report this Post04-08-2011 08:40 PM Click Here to See the Profile for DspoethSend a Private Message to DspoethDirect Link to This Post
Its an 85 duke and when i start the car it idles a little over 2000 till about 5 or so minutes and then the idle begins to come down when it warms up. once warmed up it is fine and idles around 1000. i have replaced the coolant temp sensor and the idle air control. Any ideas?

Danny
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phonedawgz
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Report this Post04-08-2011 08:44 PM Click Here to See the Profile for phonedawgzClick Here to visit phonedawgz's HomePageSend a Private Message to phonedawgzDirect Link to This Post
That is how the ECM is programmed.
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Dspoeth
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Report this Post04-08-2011 08:47 PM Click Here to See the Profile for DspoethSend a Private Message to DspoethDirect Link to This Post
so thats normal then for it to idle that high?
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phonedawgz
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Report this Post04-08-2011 08:48 PM Click Here to See the Profile for phonedawgzClick Here to visit phonedawgz's HomePageSend a Private Message to phonedawgzDirect Link to This Post
Yes when it's cold.

It should idle down to 900 - 1000 RPM warm.
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Dspoeth
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Report this Post04-08-2011 08:53 PM Click Here to See the Profile for DspoethSend a Private Message to DspoethDirect Link to This Post
that is exactly what happens. thanks for the reply
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Patrick
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Report this Post04-08-2011 11:59 PM Click Here to See the Profile for PatrickSend a Private Message to PatrickDirect Link to This Post
 
quote
Originally posted by phonedawgz:

That is how the ECM is programmed.



Are you sure? My '84 duke certainly doesn't do that.

Although the '87 and '88 dukes are a bit different than the earlier models, might be some relevant info for the OP Here.
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