Help! Will idling for hours at a time damage my DTC
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From: Middletown In.
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From: Central Alberta
m21221, One thing nobody mentioned is DO NOT idle the truck more then 4-5 minutes when it is new. Your rings will not seat properly, you will end up with a gutless truck that burns oil and is hard on fuel. Load it up and beat it hard, for the first 15 000 miles
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From: Florida
That's why many of the aftermarket tranny builders advertise that their VB's flow in Park after being modded.
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From: Middletown In.
Hmm so when my hose blew in park and ran all my fluid out on the ground under my cooler while idling then the pump didn't pump all the oil out of the pan (6 quarts). A stock 2005 48re does pump while in park. I know that for a fact or none of my oil would have been on the ground after I slept all night but would have blew out after I tried to leave if that were true.
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Hmm so when my hose blew in park and ran all my fluid out on the ground under my cooler while idling then the pump didn't pump all the oil out of the pan (6 quarts). A stock 2005 48re does pump while in park. I know that for a fact or none of my oil would have been on the ground after I slept all night but would have blew out after I tried to leave if that were true.
I have to believe the factory service manual over a guy with some fluid spilled on his driveway.
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From: Middletown In.
Not sure...maybe there was still fluid in the system? There's always bound to be some. Here's the diagrams from the factory service manual showing the flow in Park and in Neutral. It's a little hard to understand at first glance, but the big giveaway showing no flow in park is the key at the very top of each page.
I have to believe the factory service manual over a guy with some fluid spilled on his driveway.
I have to believe the factory service manual over a guy with some fluid spilled on his driveway.
You know I would to. So now that I have looked at that flow chart more closely I see that you might want to learn how to read hydraulic flow charts. See flow on that chart has a pattern and on the side bar it tells you at what pressure it is. Although it does show 0 psi that only means it has no pressure. In other words it flows through without restriction. All the lines without flows have pattern markings in them. I have placed the diagram for 4th in lockup to prove this point. Look at how
1 The rest of the lines now have a pattern in them.
2 Notice now how the cooler how has pressure on it.
Ok now on my second diagram of 4th NOT in lockup. Look at the pattern on the cooler. the sidebar now states 0 to 55 psi. This is the EXACT same pattern used on your in park diagram. Now knowing that engineers use the same reference points to make ALL diagrams/prints/flow charts ect., ect. Ok you should now be able to see my point. Oh and I would like to thank you for making me go out and find/buy the 2005 Dodge service manual to prove something that I already knew for a fact from past experience from my breakdowns. I really did need that with to help me future problems.
Please next time you smart off at someone it would be wise to at the very least know what you're talking about.
Mark
Signed you put it. (a guy with some fluid spilled on his driveway.)
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From: Forest Grove, Oregon
From the above diagram it looks like some fluid may flow while in park but it sure as heck doesn't flow to the whole transmission or to the TC while in Park. That is why some bearings and other parts can burn up if left in park to long do to lack of lubrication and is why many re-builders will alter the VB to allow fluid to flow in Park when they rebuild one!
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From the above diagram it looks like some fluid may flow while in park but it sure as heck doesn't flow to the whole transmission or to the TC while in Park. That is why some bearings and other parts can burn up if left in park to long do to lack of lubrication and is why many re-builders will alter the VB to allow fluid to flow in Park when they rebuild one!
Monnshyne, ironically I think you're the one who isn't reading it correctly. So you're claiming the TC and cooler have flow while in Park, but there is 0psi? You might want to think that over a little more before digging any deeper.
Yes they used the same pattern. One states 0psi because there is no flow, the other states 0-55psi because there is flow. All that does is help prove there really isn't flow (to the TC/cooler) in Park. It's surely not proof there is flow in Park. Forget about 4th gear...look at the direct and obvious differences between Park and Neutral. That says it all.
If you don't believe me, try doing some more research. Call a couple of well-known tranny builders and ask them. You will see.
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From: Middletown In.
From the above diagram it looks like some fluid may flow while in park but it sure as heck doesn't flow to the whole transmission or to the TC while in Park. That is why some bearings and other parts can burn up if left in park to long do to lack of lubrication and is why many re-builders will alter the VB to allow fluid to flow in Park when they rebuild one!
Yes you're right. It doesn't flow through the whole transmission and might leed to bearing wear if left to idle long enough. This fact I can see. The thing is though it does flow through the cooler as this was the question asked way up in this thread. With oil splash it shouldn't hurt one when left in park for most owners use.
Mark
DTR's 'Wrench thrower...' And he aims for the gusto...
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From: Smith Valley, NV (sometimes Redwood City, CA)
Oh yes as for the idling this thread started out with. I have 2 trucks and 05 and a 06 that idle overnight, all weekend all the time and I have never had a problem from it summer or winter. Although when idling in the winter in the north we do block off part of the radiator and have never had the high idle enabled on either truck. The 05 has over 194k on it and the 06 has over 187k on it. You will notice some smoke when you takeoff after long idles and that is cause from raw fuel as they said before. Neither truck has ever used oil and don't use oil now. I know of 5.9's with over 600k on them still running freight that idle when parked at truck stops so for the average guy that idles once in awhile or allot like we do, I wouldn't worry about it at all. As far as the truck being in neutral to get fluid to the TC that’s not true. The pump is running 100% of the time and does pump fluid through the system while in park.
Mark
Mark
Thank you Mark.
All this talk about ruining a CTD by letting it idle a little is just ridiculous! If it's up to temp it's fine. And under normal operating conditions almost noone will idle it as much as Mark.
As I've said before, relax you guys. Sheesh. You'd think these things were delicate or something! It's an industrial diesel! Use it and enjoy it.
As far as the tranny pump is concerned, it runs whenever the engine is running. That is how it goes into gear, with oil pressure. And it's why you can't push start the truck, the pump runs with the engine. I know that does not contribute to the cool in neutral story, but some seem to think the pump is not even running sometimes.
John
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As far as the tranny pump is concerned, it runs whenever the engine is running. That is how it goes into gear, with oil pressure. And it's why you can't push start the truck, the pump runs with the engine. I know that does not contribute to the cool in neutral story, but some seem to think the pump is not even running sometimes.
John
John
You guys saying that the fluid circulates in park surely have not looked at the clues. Unless there are different 48re systems than mine, here's what I have personally seen, not assumed..
#1 -- When I manually flushed my system, buy disconnecting the cooler line return right from the tranny, I had to shift to any "gear" to get the fluid to pump through the lines. Neutral and park would generate a bit more than a drip, but any gear would SHOOT fluid out the line..
#2 -- If you have a trans temp gauge in the hot line, the temp stays constant when in neutral/park. I would think that the temp would drop pretty darn quick if fluid was circulating..
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From: Smith Valley, NV (sometimes Redwood City, CA)
[QUOTE=THURENfab.;1582855]Just cause the pump is turning doesn't mean that it is being told to pump fluid through the lines/system..
Isn't that what I said????
I don't know about the cooling, just that the pump is running and pressure is up.
John
Isn't that what I said????
I don't know about the cooling, just that the pump is running and pressure is up.John