2006 Econoline E450 RV Coolant/Engine Oil/Transmission Temperature
I have 2006 E450 RV with ScanGauge installed. When running 60 mph on ambient temperature around 90F, the Coolant Temperature can reach 220 to 225F, Engine Oil Temperature reach 235 to 240F, and Transmission Temperature to 200F. When I run “Scan” on ScanGauge, there is no error code. The coolant and oil gauge on the dash are showing normal. Are these temperatures too high?

Also, when vehicle running on local road, I can hear the fan kicked on or off and keep the coolant temperature between 200 to 220, but on the highway, I don't think the fan was kicked on even when temperature reached to 225 or higher (I have to reduce the speed to 55 mph or less to keep it under 220). Is there an adjustment can have the fan kick in more often?

 

Whats the issue you are having.
Of course the fan turns on and off when at slower speed, at high speeds there is enough air hitting the radiator that the fans won't make a difference.
I will admit I do not work on things larger than F250 but the temps you list are not troubling to me.

 

220 is in a normal range for most vehicles.

 

Thank you all!
I feel better now. I will keep eyes on the water temperature in my next trip, I will see what the temperature will be when I drive above 65 mph (Last time, i was worried and kept 60 or under).

What about the train's temperature? is 200F too high? I think it is 80% load to the max GCWR, no towing, the road was flat (no degree slope).

 

As you know the worst enemy of an automatic trans is excessive heat. Just make sure the trans cooler is clear and not covered with any dirt etc

A proper and working radiator cap has a lot to do with boiling point of coolant as does concentration of coolant mixture . Recommended percentage is usually 50/50 mixture.

Some systems have a 15 lb press rad cap and that raises the boiling temp 3 degrees F. for every lb of pressure.. With that alone the boiling point would be 212 +45 = 257 degrees F.
If the rad cap is rated at 7 PSI that would give you a boiling point of 212 + 21 = 233 degrees F. The concentration of the coolant also gets into the picture. Just make sure the coolant mix is correct and that the rad cap is working correctly. Sounds like it is working as required.

 

Thank you Hanky for the advise.

I pressure washed the radiator, it looks ok from outside for all the radiators (engine, AC, Trans, and PS). I will check the cap and coolant.

I changed coolant about 6 month ago (without flushing, I used the light green color coolant from Walmat, did not use the Ford recommended coolant). and I had Ford dealer changed the fan clutch, water pump and thermostat last month. I assume there will be some coolant lost during the installation, I hope they added the correct mix coolant.

There is no radiator cap on this vehicle, it uses the small auxiliary coolant tank to add the coolant. I noticed that when the engine running hot or engine at cool, the level of the coolant in the tank remains same. The level should be higher when it hot. Is this a sign of problem in the engine coolant system?

For 2006 E450 SuperDuty Diesel, there is no space in front of radiator (behind front grill) to put an electric auxiliary fan. The only space could fit is like a 5x5 2inch fan (like those fan in the back of the computer with about <100cfm). Is this tiny fan would do any benefit for the cooling? Or is there any other ways to add an electric fan, like change the front grill to increase the space in between?

 

For 2006 E450 SuperDuty Diesel, there is no space in front of radiator (behind front grill) to put an electric auxiliary fan. The only space could fit is like a 5x5 2inch fan (like those fan in the back of the computer with about <100cfm). Is this tiny fan would do any benefit for the cooling? Or is there any other ways to add an electric fan, like change the front grill to increase the space in between?