Combines 9650STS low HorsePower

Do you have the Tier 11 motor fitted with the "common rail" fuel systemIJ Obviously you have checked_changed filters and properly cleaned the aftercooler. Is the engine running hotter than you would normaly expectIJ Using more fuel than you would expectIJ

We have a neighbour who had a 9750 with low horsepower this year. From what I heard they have had a lot of bad fuel injectors (BoschIJ) this year and have had to replace a lot. I think they actually changed all six and it is going fine now. That's just hearsay but it may be good to check out. If the fuel was only hot you would get a derate code and Deere would know what it is right away. So long as fuel, fuel filters, lift pump, aftercooler, and turbo are fine it probably lies in the pump or injectors.

Yes it is a Tier II engine. All filters are new and have been checked. This is a new machine with 5 seperator hours on it. You ask about the engine temp. Gauges indicate normal operating temp., but you can grab ahold of the bottom radiator hose and it is ice cold even after time in the field. Fuel comsumption seems excessive to me. No visible exhaust smoke. Running a 30 ft. flex head and can not exceed 3 mph in 50 bushel beans. If I push the machine I can actulally stall it out. Still no smoke. No power boost or power surge, just plain runs out of power.

Yours could have new set of problems but it sounds very similar to what I had with my 50 series CTS. "The snail" was a good description of mine - all shell and no guts. Sounds like the ECU is not working properly at all on yours. From what I can gather from JD, to meet the new emmission control rules they had to retard the timing, run the engine hotter and then had to jam in more fuel to get the same sort of HP out of them but no torque. Doesn't make sence to me. To rectify the problem I fitted a self adjusting power box and it made a totally different machine. Fuel consumption dropped from 45 litres_hour to 36lt_hr, engine ran much cooler and you have power and torque in reserve - the way it should be. You don't gain a huge amount in overall machine capacity - maybe 15 to 20% but the machine runs so much smoother and is a pleasure to drive. If JD hasn't replaced the ECU or injectors as yet, I would be pushing them to do same.

Rod, What is a "self-adjusting power box"IJ Do you mean the factory ECU or a after-market productIJ I and the dealer's mechanic have been leaning towards the injector theory but the dealer will not hear of it. Acts like it will come directly out of his pocket for the warranty work. What p***es them off (dealership)is that before I came back to the home farm I was a Certified JD Technician and Service Manager for a JD dealership so they have a hard time putting a "spin" on it. I'm starting to wish I had used JD Financing, I'd return it.......

It shouldn't ever have to come out of the dealer's pocket. He must be full of it. That's totally a warranty issue on a brand new combine. I don't know what he's trying to pull.

"They just act like it", meaning they are not putting much effort into fixing the problem. You know it's no big deal to them. They got their money. And they don't have 3,000 acres of crops still in the field. Yes I'm also aware there are legal options for me to pursue this but that does nothing to get my crops harvested.