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Old 07-04-2009, 10:06 AM
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What Denotes a "Rough Idle"

What would mean you have a rough idle?

Really am curious. Mine seems to Idle fine, but seems rough when I first start it up. Oil pressure gauge says low for a second.

I believe the gauge reads the HPOP?
I had reading issues on it, and cleaned the HPOP sensor connection, and it works fine now. Oil drain down on the HPOP?

I haven't really much paid attention to other peoples PSD's when around them, cause they were not running, but the reason I ask the rough idle is because mine has the Rock.
I do like it rocking back and fourth, which is kinda cool, but if its not supposed to be, then I should fix it. hah!
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Old 07-04-2009, 11:13 AM
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Older engines will do that, rough idle cold them straighten out with a little warmth.
If it's "romping after it up to temp you may have issues.
Try shifting the trans into N to see if it changes. A TRS out of adjustment can cause the romps.
No worry as long as it starts good. You can address it next time the VC come off. if the TRS is OK.

The oil pressure gage is on the HPOP but it measures the LPOP pressure.

It would be nice to have an permanent HPOP gauge but expensive. They use a sending unit.
I have a 4000psi gauge for temporary tests but it's mechanical. There is no way i would bring that much oil pressure inside the cab. Messy & dangerous IMO!
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Old 07-04-2009, 01:10 PM
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I have a stickshift jim....

I don't know what a TRS is.

I'm not sure what you mean by romping either.

It still rocks the truck when warmed up.

Started good today. Sometimes it stutters a second when starting and evens out immediately.
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Talyn (AKA: William) - Resident Sheep Shearer
1994 - F250 - Direct Injection Turbo Diesel, 5 speed, 4x4, Standard Cab.
Rosewood Stage 1's, 6 pos PHP Tuner, 6637, Midwest Short Throw Shift Kit.
Head over to www.midnightmods.com to see some of my projects.
Midwest Shift Kit- http://www.midnightmods.com/2009/11/...ifter-kit.html
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Old 07-04-2009, 01:10 PM
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I have a stickshift jim....

I don't know what a TRS is.

I'm not sure what you mean by romping either.

It still rocks the truck when warmed up.

Started good today. Sometimes it stutters a second when starting and evens out immediately.
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Talyn (AKA: William) - Resident Sheep Shearer
1994 - F250 - Direct Injection Turbo Diesel, 5 speed, 4x4, Standard Cab.
Rosewood Stage 1's, 6 pos PHP Tuner, 6637, Midwest Short Throw Shift Kit.
Head over to www.midnightmods.com to see some of my projects.
Midwest Shift Kit- http://www.midnightmods.com/2009/11/...ifter-kit.html
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Old 07-04-2009, 10:34 PM
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TRS = Transmission Range Selector E4OD has a sensor/ switch that atcuates the transmission into gear from the column vs a physical connection like the old c6 or something of that nature.
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Old 07-05-2009, 08:54 AM
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Oh, That doesn't apply to me.
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1994 - F250 - Direct Injection Turbo Diesel, 5 speed, 4x4, Standard Cab.
Rosewood Stage 1's, 6 pos PHP Tuner, 6637, Midwest Short Throw Shift Kit.
Head over to www.midnightmods.com to see some of my projects.
Midwest Shift Kit- http://www.midnightmods.com/2009/11/...ifter-kit.html
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Old 07-07-2009, 11:36 PM
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Romping is when the motor acts like it wants to cut out when cold idling... very distinctive once you've heard it. Idles up, almost dies, rinse and repeat a few times very quickly. Usually only an issue in cold weather. The motor rocking at idle is normal, throw a Riffraff HPX on there and it will smooth out a ton.
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Old 07-08-2009, 09:24 AM
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Motor rocking? :P
I got full chassy rocking. haha

ya HPX is commin.
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Talyn (AKA: William) - Resident Sheep Shearer
1994 - F250 - Direct Injection Turbo Diesel, 5 speed, 4x4, Standard Cab.
Rosewood Stage 1's, 6 pos PHP Tuner, 6637, Midwest Short Throw Shift Kit.
Head over to www.midnightmods.com to see some of my projects.
Midwest Shift Kit- http://www.midnightmods.com/2009/11/...ifter-kit.html
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Old 07-08-2009, 09:46 PM
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Mine does that when the motor is warmed up... what is a HPX?
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