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1999 to 2003 7.3L Power Stroke Diesel
7.3L Power Stroke Diesel equipped Super Duty and Excursion.

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Old Wed, September 26th, 2012, 09:19 PM
nicmartim nicmartim is offline
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Ok, now confused.... The RPM dip is IPR/ICP related? I have heard this before and the coast clutch thing is a new one to me. Is it both?
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Old Fri, September 28th, 2012, 08:32 AM
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What Cody is saying is that the overshoot past base idle is often related to the ECM trying to control ICP when coming off higher RPMs and it opens the IPR too much. This cause a slight drop in ICP and a subsequent dip in RPM. The convert won't have anything to do with it since it doesn't normally engage at anything below 1100 RPM.
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Old Fri, September 28th, 2012, 06:22 PM
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So, my transmission is fine? No worries about the coast clutch as Cody mentioned in post #2? I did recently replace my ICP and pigtail (old one was oily in the connector). How would a new OEM part make this start or would it? Wonder if I should take the IPR apart and clean it as the PCM is getting a strong/correct (presumably) signal from the new ICP.

I am guessing this is a non-issue going forward as it concerns to drivability. Thanks guys!
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Old Fri, September 28th, 2012, 10:57 PM
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Quote:
Originally Posted by nicmartim View Post
So, my transmission is fine? No worries about the coast clutch as Cody mentioned in post #2?
Probably since I read it as a new issue where wherein the RPM had just begun dropping when the torque converter clutch was released......as it should in OD. I had mistaken your first post to mean that it was a new issue that appeared regarding engine braking (which would occur in 3rd gear with the TCS or OD "OFF" light on).

My bad.
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