2008 F-450 Overheating with 14 k lbs Trailer

[rstockinger]

We have our 450 since the beginning of 2008 we have now 18k miles, since the last service in march of this year we have every 60 min "cleaning of exaustfilter" coming up. This is ok if we are not towing, however every time we have our 14K horse trailer in tow the engine gets hotter especially if we are towing up hill under this cleaning. Last time this happened April 22 the engine overheated and two EGR Coolers had to be replaced. Past weekend we were the first time out with the fifth wheel and had the same temperature increase, however the uphill on I85 was shorter.
( I guess that saved us)

After talking with two other F-450 owners that run under the same conditions I have to say that one had 4 coolers replaced and the other one.

We are not driving short distances normally we run 500 miles one way. Truck will go in shop again (under warranty) to check out the last rise in temperature.

Any idea why we overheat it is still cool (80 degrees), in the summer I will have to run to OK (normally 105 degrees).

[Puttser]

thermostats may i have replaced mine 3 times so far 244,000 miles

[elibenson]

How's the coolant level? I had a cracked (leaking) radiator on mine, and it wasn't ever apparent that it was leaking, except for the missing coolant and the fan running a lot.

The dealer pressure checked it, and found a small crack on one of the radiator end tanks.

[mdnbb1]

my f450 overheats every time i tow the fan doesnot come on I am trying to lemon law the truck now you never know when its going yo happen goes into
reduced power at the worst time almost got hit by a bid rig last time

[wishIhada7.3again]

We recently bought a new '08 F-450 and have less than 3,000(yes, three thousand) miles on it and are experiencing the same problem of overheating, but ever since we started hauling with the truck, before the overheating recently started, we've had trouble with the motor. It has trouble doing highway speeds up hills pulling an empty 6 horse trailer. Our old 7.3 liter pulled the same trailer, loaded with horses, up and over the same hills at 65-70mph and got 14-16 mpg. This 6.4 is getting under 8. Is this a fairly common problem among these engines? Is there any chance of successfully turning it in as a lemon?
Thanks for any info.

[elibenson]

Originally Posted by wishIhada7.3again

We recently bought a new '08 F-450 and have less than 3,000(yes, three thousand) miles on it and are experiencing the same problem of overheating, but ever since we started hauling with the truck, before the overheating recently started, we've had trouble with the motor. It has trouble doing highway speeds up hills pulling an empty 6 horse trailer. Our old 7.3 liter pulled the same trailer, loaded with horses, up and over the same hills at 65-70mph and got 14-16 mpg. This 6.4 is getting under 8. Is this a fairly common problem among these engines? Is there any chance of successfully turning it in as a lemon?
Thanks for any info.

The overheating is a problem. The mileage isn't (according to Ford). The trucks are meant to have clean exhaust, with absolutely no regard for mileage. The pulling power is a bit of a problem too. I always thought that my F450 is weaker than it should be. I am wondering if it has a fueling problem (as in the high pressure fuel pump is failing). My F350 had that problem, and new HPFP solved all my problems.