Thanks for posting a follow up on this! It seems most of the threads I find when trying to do research on a problem I'm having always end without a reply from the OP as to the final outcome. I've been fighting an overheating issue all summer, but only when towing my boat uphill or over 70 mph. If it ends up being a fan clutch, I'll be pissed and happy at the same time. I've already replaced the oil cooler, deleted the egr, had the water pump pulled and inspected, had the radiator pulled, inspected and cleaned, added an insight to watch the temps, and the list goes on...

 

Don't want to start a war here but if the coolant system is healthy there is no reason to delete the egr system. 90% of egr cooler failures are related to the failure of the oil cooler. You just eliminated the messenger.

 

Ya, the fan clutch on mine kicks in at 221. You will know it. Before I got it fixed, it would be loud, but it wouldn't cool much, down to maybe 215 then right back at it. Now, it comes on an within a minute it is down to 190. I am towing my camper next weekend, hopefully she does well.

 

Ya, I get your point, but with my scenario, 10k camper with lot of wind resistance, mostly over 3k in elevation and long stretches at 5k, in 100 degree heat, the egr delete made my coolant run much cooler.

 

Maybe you didn't read my sig. That 5er is 11k dry and I take it to the eastern sierras at least 2 to 3 times a year. 8% grade for 12 miles out of the high desert. Usually start the climb out of Bishop at 100 degrees plus ambient. Getting to Bishop is over 200 miles across the desert.

 

Same here. Also, less turbo lag/quicker throttle response. Possibly from not having the scoop in the up-pipe. Or possibly just my imagination.

I agree that if the cooling system is maintained properly there is no need for the delete, but I'm happy it's gone from my truck.

As Cheezit said, if it's not there it can't break.

 

How often does your fan clutch come on in the pull? And what ects do you see?

 

I have reached 227 ect with a 240 eot. The fan will come on for maybe a min. the temps drop for a while and the cycle repeats itself. If I drop the speed from 55 to 45 and pull it down into 3rd gear the temps will stay around 220 during the climb with intermittant fan engagement. The eot's will chase the ect's until the climb starts to level out and then all temps stabilize once again.

 

I understand what you are saying, but with the insight monitoring the ect and eot, I don't need it as a messenger. It's just one more thing than can go wrong that I don't need.
All I'm looking for is something reliable to tow my boat. It's only 6K lbs, and I figured a one ton diesel would be way overkill. I have yet to make it to any lake farther than 20 miles from my house yet this year.

 

I've heard mine kick on and go full tilt before, so I'll know it when I hear it.That was before I had the insight on it, so I don't know what temps it happened at. But, the dash gauge had already gone up and the check gauge light had come on. That was my first sign I had a problem with this truck. That was when I had the oil cooler replaced and egr deleted and added the insight. Since then, I can control it from ever raising the dash gauge by getting out of it when the insight starts to read over 230 on ect/eot. At about the same time, the fan comes on, but not up to full on roar. It is enough that the last time it happened, I was just getting off the highway and before I could get to the stoplight at the top of the ramp, the ect was all the way back down to 204. All of this has been this summer, always when the temp was over 90. I'll be curious to see how it does towing when the air temp comes down.

 

What is your boost at on flat ground at 65 mph when loaded? Mine is at 16 to 20 and hear that might be high. It increased a little when I did the delete.

 

[quote=flamebuster;9260337
I would still follow Frankenbikers suggestion, the fact you cleaned your coolant radiator last year does not mean the condensor is not plugged up with bugs and debris. I install screens on all our vehicles to stop the debris and will still have to clean out the stacks every couple of years. If you arn't using a screen you will be amazed at the amount of nats and mesquitos etc plugging up the air fins. jmho.[/quote]
If you are referring to a mash screen in front of the radiator and a/c condenser,I would like to hear what others think. It has been a few years and certainly did not involve 6.0 engines but I beleive it relivant. A very learned fleet tech demonstrated to us that placing screen in front actualy restricted air flow while clean. As it caught debris the restriction grew worse. He also demonstrated bugs are quickly reduced to dust by extreme heat of a/c condenser. Routine blowing and washing out fins was the pm that was used for the fleet after that. Any other experiences with screen?

 

I would say on average between 8 and 15 psi.

 

No offense but you are missing my point. If you'r happy with what you have then that is good. We have started smog checks here. I am happy with a properly working stock truck.

 

I can't argue the fact a screen might restrict air flow, but bugs will restrict it worse. Where would you rather have the bugs on the front of the screen or stuck in the fins of both the condensor and radiator in which they now become lodged between the 2 stacks. And I have yet to see the bugs become dust to just blow away.
We have high pressure hot water washers, large volume high pressure air compressors ( 185 cfm @100 psi) and I will still have to seperate and clean the stacks every few mths. without the screens, with about every 18 mths to 2 years. This has not changed in 25 years of living here.This is on the rigs that pull heavy loads. Cars get away with it longer but will still plug up. Tractors and semi trucks have larger fin spacing and have little problems.
No problems with temps. any time of year because of screens, and it is not uncommon for our summer temps to reach above 110 deg.
It might be we have more insects than some areas. But this is warm climate and lots of irrigation and crops = lots of insects. Bees and there sticky honey are the worse, moths and salmon flies second worse. This time of year the front of a rig can look fuzzy from the nats..
I do remeber living in Utah for a few years and had little problem with bugs there, that was sure nice too. My bikes chrome stayed clean all summer, here a 1 hr ride gives you hours of cleaning.Along the Coumbia River in the eve with all its salmon flies and it is sheer grief..
Just my experince and input, not bashing the tech.