A coolant leak from the radiator can be caused by a defective thermostat bypass. This can cause pressure spikes in the cooling system, which leads to radiator failure. The thermostat assembly and radiator should be replaced.
Resources for the Repair and Maintenance of your 2009 Ford F-250 Super Duty
2009 Ford F-250 Super Duty
2009 Ford F-250 Super Duty Problems
A defective idler pulley and / or belt material can cause a chirp or squeak noise from the engine area on initial start up. The idler pulley and / or belt will need to be replaced with revised parts.
Software enhancements are available to remedy inconsistency and confusion about the Diesel Particulate Filter (DPF) cleaning cycle - “Regeneration” mode. The Powertrain Control Module (PCM) will need to be reprogrammed to add several enhancements, including a more reasonable driving experience during the cleaning cycle and instrument cluster notifications of the cleaning status.
The rear sliding glass window may stop working, or binds in motion. The power slider cable binds causing slow, or no operation. The glass assembly will need to be replaced, the cable is included in the assembly.
If the engine cranks but will not start, this may be caused by damaged wiring to the high pressure fuel pump. Wiring to the pump can be chafed, which causes the pump to stop working. The chafed wires will need to be accessed and repaired.
2009 Ford F-250 Super Duty Questions and Answers
where is the emercancy reset fuel sensor located?
wont start when is running idle rough then dies like starving for fuel
I am looking to buy a 4x4 and guy selling the truck states this is all that's wrong with it. Want to see if it's worth it.
2009 Ford F-250 Super Duty Reviews
I have this truck (actually the 2008) with the 6.8 V10. I was talked out of buying the diesel by several people because of the perceived problems and poor fuel economy of the new 6.4. The 6.8 has gobs of power, but horrible gas mileage. If I'm easy on the accelerator I get 9-10 mpg in mixed driving, I can get up to 12 on the highway if I keep the speed reasonable, and it drops down to a wallet-emptying 7-8 when I'm pulling my 6,700lb fifth wheel. Ouch. The ride is typical of a truck, and is particularly rough over sharp bumps; my previous truck was the 1/2 ton and the ride on that was much nicer. I have about 8,000 miles on my truck and overall like it very much. I love the styling and it's reasonably comfortable for a truck. The one thing I would want to improve is the fuel economy - I sometimes wish I had switched to Dodge with the Cummins Turbo Diesel.