07' High idle issue - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 12-29-2008, 09:47 AM Thread Starter
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07' High idle issue

Truck has 25k miles, no programmer only exhaust.

Idles at 1300-1400 rpm when at operationg temp. Cruising RPM is off also, I was seeing 2k rpm @ 45mph.

Truck sounds like it is at normal rpm..but tach says diff.

KOEO tach reads 400-500rpm and when the key is off it is sitting at 300rpm.

Bad cluster?

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post #2 of 5 Old 12-29-2008, 09:48 AM Thread Starter
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Also...about 6mo ago my speedo was off.

Was showing 45mph when i was doing about 25.

I turned the truck off, re-started and it was fine never a issue since.

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post #3 of 5 Old 12-29-2008, 10:56 AM
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Sounds like a bad cluster. My 06 did this and have been 35k miles with the new one with no issues.

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post #4 of 5 Old 12-29-2008, 11:07 AM
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Hold the odometer reset button on the cluster for 3 seconds or so and turn the key on while your still holding the button and it will go into a diagnostic mode, as soon as it does so you can let off the button and either the first menu or second is a sweep gauges option, it will reset them back to factory.

Mine has a speedo problem every once in a blue moon and I just do that and it works.

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post #5 of 5 Old 12-29-2008, 12:21 PM Thread Starter
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I'll try that...BigRed

Truck sat for 2 hrs, now it works fine.

WTF

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