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  #1  
Old 02-14-2016, 09:24 PM
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Default 04 5.9 CR with coolant temp issues

My friend has an 04 5.9 - 5600 4wd with 300k+ on it. compounds, bullydog, blah blah.
His radiator started leaking at both ends, so he bought a new, all-aluminum 4 core, and we replaced it. at the same time, we replaced the t-stat and upper/lower hoses. refilled with about 5 gal of 50/50 coolant.

Shortly after that, he started experiencing stupid-high temps.. like 230, 240, 250.. he'd stop, open the radiator, and pour about 1/2 - 1gal coolant in it, and temps would calm down. In a day or two, this process would repeat. Reservoir is full, but is always cold. hose to coolant tank is not plugged, no leaks anywhere, no burning coolant, no chocolate milk oil..
Is this just a stupidly huge air pocket? Maybe the new 195* t-stat is screwed? Any suggestions are appreciated.
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SOLD: 96 2500 sclb 4x4, 5spd swap, cam, stack, #10, bhaf, 16.5*, 27mpg
SOLD: 01 2500 qcsb 4x4 HO 6spd, 2" level, 5" exh., Edge Juice, bhaf, 16mpg
SOLD: 97 3500 cc-drw, built 47re, 3 disk, 4" exh., #100, bhaf, gauges
SOLD: 02 QCSB 2500 4x4 5.9-auto
SOLD: 97 ECLB 2500 4x4 V10-auto.. junk..
CURRENT:'06 2500 ThunderRoad QCSB 5.9CTD 4x4, built Auto; '02 Silverado 2500HD 6.0L CrewCab LB 4x4; '14 vw cc r-line 2.0t 6 speed

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  #2  
Old 02-15-2016, 07:52 AM
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I did a flush and refill once due to swings in the coolant temp. When done I still had the swing and later found out that over time I had a bubble in the hose. This was a bubble in the upper radiator hose on the inside of the hose. So I had a restriction of flow. Changed out both hoses and coolant and all was fine. How old are the hoses ?

On this truck I was having swings in my coolant temp, and found out when I changed the coolant and thermostat, I used one bought from O'Riellys. Had used them in the past for my gassers without problems, but when I gave up and bought another Cummins made thermostat, it stopped and worked perfect again. It seemed my engineis very picky on parts. Also, I don't know how much liquid is needed for the refill, it might be an air pocket adding to the problem.
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2006 Dodge Ram, 2500, Big Horn, 5.9 Cummins, 4x4, Q/Cab, 48RE, L/B, 3.73, S&B CAI & Snout, ProFlo 5" S/S exhaust, Smarty Touch, Oil ByPass Filter Kit, Transfer Flow 56 gal tank, 110 gallon in-bed tank, XX-Fuel System, Coolant Bypass Kit, Mag-Hytec front & rear, 285 x 70 x 17

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Old 02-15-2016, 09:25 AM
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The coolant capacity is about 30 quarts (7 1/2 gallons) so it is possible that there is an air pocket in it.
When it was refilled it was run until the thermostat opened so it could be topped off?
How often does it overheat?
Is it possible that there is a very small leak and is not noticeable?
Has anyone done a pressure test on it?
I guess what I am asking is for more information. I am sure that the problem is going to be one of those 'stupid simple' solutions.
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Old 02-17-2016, 08:38 AM
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Rogan, you get the opportunity to investigate this further?
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1996 RAM "Custom Ground" 100 plate 3/4 forward, 300 injectors, 16.5 timing, Goerends Auto = 365HP, 833TQ Third Gen Rims, Aluminum Headache Rack
Duct Tape can't fix stupid, BUT it can muffle the sound
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Old 02-17-2016, 10:03 AM
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I haven't, unfortunately. We've had some poopy winter weather the past week, so I've not done much at all, outside.. This weekend is supposed to turn nice, so I'll look into it further. I appreciate the follow-up.

it was ran until t-stat opened, when refilling it. It gets 205-210 regularly, and will tip upwards of 220, then fall to 170.. i think it may be a faulty t-stat... it hits these temps at cruise speed..
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SOLD: 96 2500 sclb 4x4, 5spd swap, cam, stack, #10, bhaf, 16.5*, 27mpg
SOLD: 01 2500 qcsb 4x4 HO 6spd, 2" level, 5" exh., Edge Juice, bhaf, 16mpg
SOLD: 97 3500 cc-drw, built 47re, 3 disk, 4" exh., #100, bhaf, gauges
SOLD: 02 QCSB 2500 4x4 5.9-auto
SOLD: 97 ECLB 2500 4x4 V10-auto.. junk..
CURRENT:'06 2500 ThunderRoad QCSB 5.9CTD 4x4, built Auto; '02 Silverado 2500HD 6.0L CrewCab LB 4x4; '14 vw cc r-line 2.0t 6 speed

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  #6  
Old 03-31-2016, 07:44 AM
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So, to update you all, I swapped the old tstat back in. No change..
Swapped the old WP back in, and it seems to be much, much better, thus far. The 'new' pump didn't seem to have any visible issues, like impeller slippage, etc. He's touched 205 once, since.. Other than that, no reported problems yet..
If it's all good now, I'm scheduling him to drop it off, so me and a bunch of wire can get aquainted.. It is a "owner wiring" nightmare... I mean, it looks like hell; quick wiring jobs everywhere... He's asking for an electrical short/fire if it doesn't get straightened out.
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SOLD: 96 2500 sclb 4x4, 5spd swap, cam, stack, #10, bhaf, 16.5*, 27mpg
SOLD: 01 2500 qcsb 4x4 HO 6spd, 2" level, 5" exh., Edge Juice, bhaf, 16mpg
SOLD: 97 3500 cc-drw, built 47re, 3 disk, 4" exh., #100, bhaf, gauges
SOLD: 02 QCSB 2500 4x4 5.9-auto
SOLD: 97 ECLB 2500 4x4 V10-auto.. junk..
CURRENT:'06 2500 ThunderRoad QCSB 5.9CTD 4x4, built Auto; '02 Silverado 2500HD 6.0L CrewCab LB 4x4; '14 vw cc r-line 2.0t 6 speed

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Old 03-31-2016, 07:53 AM
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Rogan, my prayers are with you. I only had a nightmare once in a 72 Pontiac Lemans where the guy took all the loam casings off and the wiring looked like it was the nervous system in the human body. Then he cut and replaced who knows how many wires. After three weeks trying, I gave up. May you not have nightmares or rip your hair out while doing the repairs.
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2006 Dodge Ram, 2500, Big Horn, 5.9 Cummins, 4x4, Q/Cab, 48RE, L/B, 3.73, S&B CAI & Snout, ProFlo 5" S/S exhaust, Smarty Touch, Oil ByPass Filter Kit, Transfer Flow 56 gal tank, 110 gallon in-bed tank, XX-Fuel System, Coolant Bypass Kit, Mag-Hytec front & rear, 285 x 70 x 17

We the people are the rightful masters of both Congress and the courts, not to overthrow the Constitution but to overthrow the men who pervert the Constitution.
~ Abraham Lincoln
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Old 03-31-2016, 07:59 AM
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I told him I'd fix it, then if he does that crap again, I'll burn it down for him! HAHA!
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SOLD: 96 2500 sclb 4x4, 5spd swap, cam, stack, #10, bhaf, 16.5*, 27mpg
SOLD: 01 2500 qcsb 4x4 HO 6spd, 2" level, 5" exh., Edge Juice, bhaf, 16mpg
SOLD: 97 3500 cc-drw, built 47re, 3 disk, 4" exh., #100, bhaf, gauges
SOLD: 02 QCSB 2500 4x4 5.9-auto
SOLD: 97 ECLB 2500 4x4 V10-auto.. junk..
CURRENT:'06 2500 ThunderRoad QCSB 5.9CTD 4x4, built Auto; '02 Silverado 2500HD 6.0L CrewCab LB 4x4; '14 vw cc r-line 2.0t 6 speed

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Old 03-31-2016, 08:22 AM
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Did you repair the harness? Any more heat issues?
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1996 RAM "Custom Ground" 100 plate 3/4 forward, 300 injectors, 16.5 timing, Goerends Auto = 365HP, 833TQ Third Gen Rims, Aluminum Headache Rack
Duct Tape can't fix stupid, BUT it can muffle the sound
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  #10  
Old 03-31-2016, 12:42 PM
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I haven't started on the harness, yet. Maybe this weekend. Other than that one or two 205s, that's all he's mentioned to me on the overheating issue.
__________________
SOLD: 96 2500 sclb 4x4, 5spd swap, cam, stack, #10, bhaf, 16.5*, 27mpg
SOLD: 01 2500 qcsb 4x4 HO 6spd, 2" level, 5" exh., Edge Juice, bhaf, 16mpg
SOLD: 97 3500 cc-drw, built 47re, 3 disk, 4" exh., #100, bhaf, gauges
SOLD: 02 QCSB 2500 4x4 5.9-auto
SOLD: 97 ECLB 2500 4x4 V10-auto.. junk..
CURRENT:'06 2500 ThunderRoad QCSB 5.9CTD 4x4, built Auto; '02 Silverado 2500HD 6.0L CrewCab LB 4x4; '14 vw cc r-line 2.0t 6 speed

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