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twistedjack

engine overheating

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Okay so when I am pulling my camper up long hills the water temp gets up to 230, I am keeping the egt's around 1150 up hill. Radiator and intercooler are both clean. I can hear the fan so the clutch is engaged so it is moving plenty of air. What now add an engine oil cooler?

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Did you ever get a fan shroud on your truck?

I did finally build one. It fit the radiator perfect. covers the fan out to the back edge of the fan and about 3/4" from the blade tips just like stock. The radiator I am using is from a 93 and the intercooler is from a 99ford for those that haven't seen my truck. The normal temp on the flat is 190.

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I wouldn't go that far, but the aftermarket thermostats do have a history of not working correctly.

They aren't cheap from Cummins. One for my truck was around $40 and the higher temp one (190*?) was $90...

There is actually already an oil cooler on the stock engine. It is part of the assembly that the oil filter is on.

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in my 01 I have had issues with the fan clutch even when it sounded like it was engaging. It just wouldnt get up to speed.

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This is for my 2001 24V but it may have the same part numbers.

I pulled my Rad out of the truck, replaced the thermostat to a 180 deg (part number 3967195) and flushed the block and heater core. I have to say that my temps were getting above 204 deg while pulling my 20' enclosed car hauler. I had a 190 deg t-stat in there. When I pulled it out, the rubber diaphragm had cratered and disintegrated; it was in my Rad when I back flushed it.

The Rad was caked with crud on the front side. I even have my breather relocated to the trackbar. I will post pics of it just after I started to wash it down. I washed it with degreaser 4 times and also used an entire can of brake cleaner on it.

I re-filled the cooling system with Fleetguard ES Compleat 50/50 premix (part number CC2825X). 4.5 Gallons is what it took.

Pulling the rad was pretty easy. Un-clip the shroud, take the overflow tank off and the window fluid tank off, undo the 4 bolts (2 on each side), take the pos battery cable off the top of the rad, 2 bolts that hold the rad to the front clip, and take out. I recommend 2 people lifting it out.

Radcleaning003.jpg

Radcleaning001.jpg

Radcleaning004.jpg

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On my chevy I ended up using one from summit racing. Its one of thier summit brand aluminum race radiators. Ive never had a heat problem and I dont even have a shroud.

They sell for under $200 shipped.

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well this weekend i blew a bypass coolant hose that i installed inplace of the stock trans cooler so I lost all the coolant. Since that happened and it is a bitch to get to without removing the alternator and ac compressor I went a head and replaced the thermostat and fan clutch. I also ran some radiator flush through the system. I haven't hooked the trailer to it yet but I can definately see the thermostat open and close on the guage which never happened before, so I hope it is fixed.

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Well I just got back from my road trip to Moab,Utah and back I would say my overheating problems are gone. Now I can put some power down without it overheating. I decided to see if I could get it warm up a 7% grade and the water temp only got to 200 and I was doing 65 at the top of the hill and now the Egt's only hit 1200 at the very top of the hill. I will have to scale the trailer to get the weight but I think is was around 7500lbs not a lot of weight but before the water temp hit 240 and I might only be able to pull the hill at 45-50 without the pyro over 1250.

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