John deere 333d skid loader derating

Lyoko476 · Jan 12, 2013

I have a John deere 333d skid loader and ill turn in on and after acouple minutes it pops up a message about derating 100% and before I know it it's at 50%. Idk what to do. My dealer never heard about it and the John deere head courters customer support have no Ida either. All they have told me is its the engines way of preventing damage and it could be caused by low fuel pressure so I should change the fuel filter but that didn't work. I'm out of ideas. Please help if anyone has any clues
Thanks
-Hunter McVey

jd110 · Jan 12, 2013

There are many reasons possible for engine derating. Did the dealer connect a computer and check codes? A code should be stored that will point you in the right direction. There were some issues with ecu software on early serial numbers. If your serial number is lower than 195481, have your dealer reprogram it with newest software. Did you replace both fuel filters? The small in-line filter is more likely to be clogged than the main filter. Dirty air filter could also cause this as well as a clogged fuel line, low transmsission pressure, clogged hydraulic filter, engine overheating, or a failed sensor. If you can get the code and post it here, we can help further.

Lyoko476 · Jan 13, 2013

I have replaced all the possible filters and all the oils in the machine. I get asked for the codes but the only ones I have are the stored ones. No other codes pop up.

SandalwoodRanch · Jan 17, 2013

This happened to my 328D and it was caused by foreign debris in my fuel tank. Had to dump and clean the entire tank out. It fixed the issue though. And we havent had any others come in the shop for that.