Redux: '06 Ram w/Diesel -- Doesn't 'hold' heat

From : hober mallow

Q: hello everyone i maybe poked a stick into a hornets nest with my original question of losing heat but heres what happened to my 06 ram with cummins diesel 6-speed manual transmission yesterday.... i live on a owner-maintained gravel road and went to get some inch-and- a-quarter-minus crushed rock to fill in some potholes. i purchased about 3/4 ton of crushed rock. by the time i got home with the crushed rock total trip of about 18 miles my temperature gauge registered right in the middle at what 200 degrees. i had my shovel with me so i commenced to fill in the potholes as i returned home down my gravel road. the technique is to stop fill in a couple of potholes move down the road fill in a couple more potholes etc. etc. at each stop i kept the cummins diesel running and used the parking brake. by the time i finished and returned to my house the temperature gauge had actually dropped and was registering about two thirds of the way from stone cold to half-way. man talk about losing heat from the diesel motor !!! any comments thanks. the rocket man .

Replies:

From : roy

hello everyone i maybe poked a stick into a hornets nest with my original question of losing heat but heres what happened to my 06 ram with cummins diesel 6-speed manual transmission yesterday.... nope you didnt poke anything. this is just they this grroup functions at times. i live on a owner-maintained gravel road and went to get some inch-and- a-quarter-minus crushed rock to fill in some potholes. i purchased about 3/4 ton of crushed rock. by the time i got home with the crushed rock total trip of about 18 miles my temperature gauge registered right in the middle at what 200 degrees. i had my shovel with me so i commenced to fill in the potholes as i returned home down my gravel road. the technique is to stop fill in a couple of potholes move down the road fill in a couple more potholes etc. etc. at each stop i kept the cummins diesel running and used the parking brake. by the time i finished and returned to my house the temperature gauge had actually dropped and was registering about two thirds of the way from stone cold to half-way. man talk about losing heat from the diesel motor !!! that is a very efficent cooling system that you have. if not being worked it will cool rapidly .

From : bigironram

on sun 02 dec 2007 123449 -0600 hober mallow wrote hello everyone i maybe poked a stick into a hornets nest with my original question of losing heat but heres what happened to my 06 ram with cummins diesel 6-speed manual transmission yesterday.... i live on a owner-maintained gravel road and went to get some inch-and- a-quarter-minus crushed rock to fill in some potholes. i purchased about 3/4 ton of crushed rock. by the time i got home with the crushed rock total trip of about 18 miles my temperature gauge registered right in the middle at what 200 degrees. i had my shovel with me so i commenced to fill in the potholes as i returned home down my gravel road. the technique is to stop fill in a couple of potholes move down the road fill in a couple more potholes etc. etc. at each stop i kept the cummins diesel running and used the parking brake. by the time i finished and returned to my house the temperature gauge had actually dropped and was registering about two thirds of the way from stone cold to half-way. man talk about losing heat from the diesel motor !!! any comments thanks. the rocket man what you describe is completely normal for a diesel engine. iirc they idle at about 801 air fuel ratio. not much fuel consumed at idle so very little heat generated at idle. .

From : tom lawrence

i maybe poked a stick into a hornets nest with my original question of nah - you didnt do anything. we just have a few volatile individuals here who love nothing more than to show the world their finely-honed debate skills coupled with their mastery of the english language. pay no attention... any comments thanks. well you havent told us what part of the country youre in but regardless an idling cummins wont generate enough heat to overcome the efficiency of the radiator. ive seen my egts exhaust gas temperature drop to almost 200f during extended periods of idling caution dont do this - its not good for the engine. when you consider that the cooling system can maintain a water temperature of 195f even when the engines cranking out egts of 900f its no wonder the engine cools off as much as it does when idling. the problem with this aside from the fact that the cab heater doesnt work as well is that with the engine that cold some of the injected fuel can re-condense on the cylinder walls washing the oil away and allowing the rings to score the cylinders. now dont get worried - this doesnt happen overnight. however on vehicles that spend a lot of their time idling away in colder weather over a period of years the engines show significantly more wear than if they were worked instead of idled. a possible solution may be something as simple as a winter cover on your grill. by blocking off some of the airflow to the radiator you can keep more heat in the engine. another option may be the high idle feature... with a little electrical work you can get this feature enabled on your truck so that you can turn up the idle speed via the cruise control. details on this can be found here http//www.dieseltruckresource.com/dev/showpost.phpp=1170415&postcount=21 yet another option could be an exhaust brake. when the exhaust brake is engaged it creates a restriction in the exhaust making the engine work harder to maintain its programmed idle speed. this additional load is enough to keep the engine temps up and as a bonus lets the engine warm up quicker from a cold start. faster warm-up = cab heat available sooner. of course if this behavior isnt bothering you and youre not extended-idling your truck more than occasionally you dont have to do anything about it. .

From : hober mallow

hello everyone man talk about losing heat from the diesel motor !!! that is a very efficent cooling system that you have. if not being worked it will cool rapidly well you havent told us what part of the country youre in but regardless an idling cummins wont generate enough heat to overcome the efficiency of the radiator. ive seen my egts exhaust gas temperature drop to almost 200f during extended periods of idling caution dont do this - its not good for the engine. when you consider that the cooling system can maintain a water temperature of 195f even when the engines cranking out egts of 900f its no wonder the engine cools off as much as it does when idling. im near seattle and the outside temp was maybe 40 degrees. anyways thanks to everyone for the replies. i appreciate the knowledge transfer. hopefully it was a copy and not a cut. the rocket man .

From : kurt

duplicate it.. the table could be a wing section prototype set to be built in japan. the books might be landing gear components coming from england. theres nothing much to duplicate its still evolving on paper. so your team is out. the job goes elsewhere. i really dont see the problem as long as you go with the job.... denny . 222 341031 seral31eg01mvu9k48om72ndi0u6cev41c@4ax.com now that is what i call great reply! no bullshit! just plain good old common mechanical principles! so do you feel that the extra cost is worth buying a diesel i do if you have the need for the torque! again! a very good post reply! i only have a ram quad cab 1500 with the hemi but i love the truck! on sun 2 dec 2007 154525 -0500 tom lawrence tlawrence5@earthlink.net wrote i maybe poked a stick into a hornets nest with my original question of nah - you didnt do anything. we just have a few volatile individuals = here=20 who love nothing more than to show the world their finely-honed debate=20 skills coupled with their mastery of the english language. pay no=20 attention... any comments thanks. well you havent told us what part of the country youre in but=20 regardless an idling cummins wont generate enough heat to overcome the= =20 efficiency of the radiator. ive seen my egts exhaust gas = temperature=20 drop to almost 200=b0f during extended periods of idling caution dont= do=20 this - its not good for the engine. when you consider that the = cooling=20 system can maintain a water temperature of 195=b0f even when the = engines=20 cranking out egts of 900=b0f its no wonder the engine cools off as = much as=20 it does when idling. the problem with this aside from the fact that the cab heater doesnt = work=20 as well is that with the engine that cold some of the injected fuel = can=20 re-condense on the cylinder walls washing the oil away and allowing = the=20 rings to score the cylinders. now dont get worried - this doesnt = happen=20 overnight. however on vehicles that spend a lot of their time idling = away=20 in colder weather over a period of years the engines show = significantly=20 more wear than if they were worked instead of idled. a possible solution may be something as simple as a winter cover on your= =20 grill. by blocking off some of the airflow to the radiator you can = keep=20 more heat in the engine. another option may be the high idle feature... with a little electrical= =20 work you can get this feature enabled on your truck so that you can = turn up=20 the idle speed via the cruise control. details on this can be found = here=20 http//www.dieseltruckresource.com/dev/showpost.phpp=3d1170415&postcoun= t=3d21 yet another option could be an exhaust brake. when the exhaust brake is= =20 engaged it creates a restriction in the exhaust making the engine work= =20 harder to maintain its programmed idle speed. this additional load is=20 enough to keep the engine temps up and as a bonus lets the engine = warm up=20 quicker from a cold start. faster warm-up =3d cab heat available = sooner. of course if this behavior isnt bothering you and youre not=20 extended-idling your truck more than occasionally you dont have to do=20 anything about it. due to e-mail spamming bots my reply address is incorrect. .