2005 Dodge cummins diesel 1-ton dually 4wd. 201K on it now, and for the last 25-30K miles the thing runs hotter than it used to. I pegged the temp guage 2 weeks ago while pulling a 15,000 lb trailer up hill. On the down hill side, I put it in neutral, turned off the AC (it was 95 degrees that afternoon) and let it idle while I coasted at 55-60 mph (about 2 miles), the temperature returned to it's new normal (around 210-215 ), for years "normal" was 190. I've replaced the thermostat, flushed the coolant, and cleaned the bugs out of the radiator, to no affect. The kicker to this deal, is that this is a random problem. Will the factory water pump drive pulley or impeller slip on the shaft with these things?
"vistronic" cooling fan has not worked since 90,000 miles or so. I've got one ordered but I'm not getting my hopes up......... And no Rusty, we will not be taking your ford. My truck is a big fat POS, but yours is even worse........ Let's buy some mules and take off tonight......
Am I to assume you're throwing a tune at it? And if so, just how big? You done any exhaust or intercooler work?
My old Dodge was running hot on the upgrades untill I pulled the radiator and had it boiled out at a radiator shop. That gets the crap out of it that a do it yourself flush can't.
Old hill billy trick, take your hand and feel the fins on the radiator as soon as it starts to heat up (don't wait until it's boiling) Sometimes you get corrosion between the fins and tubes and the heat doesn't transfer from one to the other. We used a slightly different spec aluminum for the fins and the tubes and made the fins sacrificial to the tubes (galvonic corrosion between dissimilar materials). Only fix is to replace it. Smart hillbillies shut the engine off first or ask their buddy to go check it while you watch the temp gauge...:laugh:
Smart hillbillies shut the engine off first or ask their buddy to go check it while you watch the temp gauge...:laugh:[/QUOTE] So you can tell the smart ones from the intellectually challanged versions by counting Fingers?
I took all that "go-fast" sh!t off of it when the last turbo melted down at 112K miles. Yes I did do some intercooler work when the truck had about 10K on it, I hit a deer. The intercooler survived. I've got a new radiator headed my way too, but it may not make it in time for the Martin trip. If I'm not comfortable with it by tomorrow night, I'll borrow a truck for the trip. It's the intermittent nature of the problem that's got me bothered. Dave, the last high mileage Dodge that did this to me, turned out to be full of casting sand. Go figure
My first "newer" car was a 53 Ford hotrod that had oatmeal in the radiator. That was in 1960. Overheated like yours, so we flushed the radiator.....OOOOPS.
My dad had a 73' Ford work truck, after a couple of years the water pump started leaking. So the old man grabs a new one from NAPA and throws it on. The truck began to overheat periodically for the next 2 weeks, so the old man pulls the pump, the radiator, & the T-stat. Right below the T-stat, he finds a Hersheys chocolate bar wrapper. All he could figure was that someone stuffed it in the water pump while it was laying on the parts counter waiting for him to pick up.
We had a 99 Dodge that did the same thing. From the time it was new it would get hot pulling loads of 10k plus when going up steep climbs at slow speeds. 5 dealers later we were told to pull over and just let it cool off. 250 degrees is not good for a diesel. I really don't know what to tell you. We finally traded it.
I'm guessing you have a bad fan clutch. Have you thought of removing the radiator and making sure there isn't any junk built up in there. Without removing the radiator, intercooler, AC Conenser, etc you can't be sure it's good and clean. Good luck
You melted the turbo? What's the pistons look like? What tune and mods were you running? Do you have egt and boost gauges?
If I had to guess I am going to say you have either smoked the HG a little bit with the go fast stuff and the big pull just helped it along. Cummings gaskets do not like much after 35psi or so and they form cracks that can cause a slight over heating problem. If 210 is its new norm then I would say that could be the worst problem. Have you checked the exhaust for any restrictions, what are your EGTs like, are any check engine lights on at all. If you EGTs are up from what they normally are you may have an injector that is stuck open a bit, a restricted exhaust also check the turbo and make sure it is spinning freely as this could cause another restriction in the exhaust that you may or may not think of. Best case scenario, sell that pretty truck and buy a 12v.
I think he just pulled from Kansas to Martin for the FAST race. My guess is he resolved it, or he and Rusty brought sleeping bags and a lot of beer. :laugh:
The Block or most probably the Rad is coated with sludge..You can flush it all day long with $2.99 autozone stuff and it wont do squat.Time to replace some parts and phsically scrub the block passages.
Everything is now new, block was power flushed. Truck still runs hot. I'm going for the head gasket next.
So does this mean we'll see you thrashing under the hood of the Ram 3500 for the entire PSMCDR weekend instead of under your car????:bla:
