What Denotes a "Rough Idle"
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Joined: Oct 2003
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From: Ashland City, TN
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!
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!
Post Fiend
Joined: Oct 2003
Posts: 5,903
Likes: 1
From: MICHIGAN
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!
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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Joined: Oct 2003
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From: Ashland City, TN
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.
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.
Thread Starter
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Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 103
From: Ashland City, TN
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.
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.
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
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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From: Ashland City, TN
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From: Ft Scott
HPX...high pressure crossover...it's the line that connects the two HP oil rails.
http://www.itpdiesel.com/store.php/products/KCM_OBS_HPX
http://www.itpdiesel.com/store.php/products/KCM_OBS_HPX