Help!! Dodge 4.7 Liter Engine Overheating

[Colonel Klank]

Many thanks for all the advice gang. The Dodge dealer will have it this week. Gotta get it ready for The DOGS!

[Kiwi]

Klank

Look mate picking a plugged radiator is dead set easy. Just go for a drive until the engine gets good and warm, hot if you like. Pull over, kill the engine and lift the hood. Carefully touch the hot (Inlet side of the radiator with your hand. Now touch the outlet side. Not sure if yours is crossflow or vertical. Anyway it makes no difference. If the outlet (return to the water pump) is way way cooler than the inlet the cores blocked internally. ( Flow is too slow thus it over cools but the flow is not enough to keep your engine cool) If it hot both sides then the core is blocked externally, waters passing through fast enough but not cooling down. (Lack of air flow). Get it MATE!!! Us old farts in wheel chairs and lap blankets are not dumb you know.

Now young whipper snapper all this comes to pass with a little thing called DeltaT. A good radiator will have a cross core drop in temp of between 5 and 14 degrees C. Do not ask me for F as you guys can work that out your self.

[Colonel Klank]

The inlet/outlet temps were checked and while the engine was at 225F, the inlet temp was 195 and the outlet temp was 165. How does that sound?

[Bat Fastard]

If the engine temp was 235 why wasn't the inlet temp close to the same?

[Kiwi]

Klank,

Thats about the limit. Doing rough and nasty I would say your radiator is gunked up a bit inside. Contrary to opinion the closer the inlet and outlet temps are the more efficient your cooling system is. Again its the Delta T so you want a minimum temp drop of 12 to 14 degrees F. You have 30 and thats for sure on the limit. Thats why pulling the trailer your cooking her, but with no load shes likely fine. Go get a radiator flush mate, its the cheapest and easiest to start with. After that it starts costing money. Are you loosing coolant at all? Thats a clue for a more expensive problem as well.

BF that temp really depends where they are taking the dang thing from as well but your right, If it taken at the temp probe then there's no way you should have that drop between the head and the top tank. If thats real then I would throw the thermostat in the trash can first. But a booGee never hurts a cooling system. Bit like going to the Doc for a stomach pump mate. They find tomato skins and carrot chunks two years after youve even eaten the sods of things. JK!!!!

[Tired Old Man]

Remove the engine, install a large 3W. Send the Dodge engine to DA. They do great service.

Seriously good luck with finding the problem.

[Colonel Klank]

	Quote: Originally Posted by Bat Fastard
	If the engine temp was 235 why wasn't the inlet temp close to the same?

Because of the Adabiatic Cooling co-efficient, this number is arrived at by dividing the neo-relative operand by the cumulative relastatic divisor. If this ratio is higher than 2.038:1, then you have another whole set of problems to deal with. You must then consult Terwinger's Guide To Deciduous Mechanics and find out the indeterminacy factor and apply it to a Brownian Motion Inducer, a cold beer, and then you can figure the maximum and minimum un-probability factor.
(you asked)

Klank

[Bat Fastard]

WTF?

[RADRICH]

[quote=Colonel Klank;286188]Because of the Adabiatic Cooling co-efficient, this number is arrived at by dividing the neo-relative operand by the cumulative relastatic divisor. If this ratio is higher than 2.038:1, then you have another whole set of problems to deal with. You must then consult Terwinger's Guide To Deciduous Mechanics and find out the indeterminacy factor and apply it to a Brownian Motion Inducer, a cold beer, and then you can figure the maximum and minimum un-probability factor.
(you asked)

Klank[/quote

LMAO!!!!!! Have 178K on my Dodge...just changed radiator for 2nd time (3rd radiator) but, while they're at it, have them check that fan clutch before installing new radiator...and like that one guy said...don't take it to a dealer...take it to a good radiator shop!!

[Colonel Klank]

Dodge says that the radiator is plugged and needs replacement and it will be ready tomorrow afternoon. I will take it home, hook up the trailer and tow the piss out of it to make sure it is ready to go to Dayton next week.

Thanks for all the help!!!!!

Klank

[Freddy Warbird]

If they diagnosed it correctly, You'll be a happy camper to see the gauge stay cool.

[Freddy Warbird]

That, or 3ddd is playing with his VooDoo Dodge RAM 1500 truck.