Traction Problem with load mode 4120

[Kyle_in_Tex]

Yes it is normal. I really hate to tell you this, but load match doesn't work or should I say it works too much at low rpm. It is designed to keep rpm from stalling, so how can it possibly work if the rpm is already at a low setting? Don't use it except for A or B gear and at higher rpms only. Like 2000 on up.

Hope your dealer doesn't charge you for nothing. Wish you would have waited a bit more.

 

[chevyman29]

well after two trips to the dealer i'll tell you how I fixed my load match problems on my 4520 . I traded that sucker back in on a 5095m with power rev plus . cause im telling you right now the people at my dealer DONT have a clue as to how to fix loadmatch problems or even really understand how it should work . i wish you the best of luck and will stay tuned ......

 

[PioneerMan]

I have a friend with a car that has a 'sport' mode, which basically adds more fuel. I think it is the same thing, just when the engine struggles. If it is at idle, or low rpms, it cant really recover no matter how much fuel is added. If it is what I am thinking, it will not help at full throttle either, because it is at max fuel burn. My .02.

 

[Kyle_in_Tex]

Re thinking a bit more how to explain it. Load match is designed to get the maximum HP out of a tractor. So it works when the engine is at full RPM. In motorcycling terms we say WFO. It is designed for getting a full load of dirt in the bucket, or for mowing thru various thickness of grass. It will automatically slow the speed down to keep the RPM up when you hit really thick grass. All too often, owners think they are taking better care of a machine if they don't "rev it up full". Nonsense, these engines are designed to run for thousands of hours at full power. Don't baby them. It is far worse to have an engine working hard and then stall it so much it dies. If this happens, start it immediately to get the coolant circulating to the hot spots in the engine per JD's recommendation.

 

[tschwerm]

Why wouldn't the dealer know? When it is working right.

This is very frustrating

 

[tschwerm]

Kyle does your tractor move at all at idle in power match mode? Mine did not until you hit about 1500-1800 rpm

 

[fuseboxer]

Without load match my rpm's and power drop under load. When I put a 5 foot garden box with 5-chisel plow tines down I have to have load match on or the unit will die. I need to have the rpm's up near the 540pto mark and then push the load match on. The clay soil/grass untilled soil will rip or tires spin some and rip. Without the loadmatch the engine rpm's drop and the engine dies. I do not hear any rpm drop with load match. Old mechanical governor tractors you could tell the fuel was increased/throttle. Load match is different its engine is computor controlled sequential fuel injection with high tech sensors. I am sure it is high tech.

Compare the old gas auto's that lost power climbing the mountains now they do not miss a beat. High tech, Mass air flow, cpu control and fuel injection with lots of sensors. Europe had the technology applied to car diesel engines and the USA only had it on gas engines. USA diesel engine high tech I am sure has improved in the last 5yrs but I do not know if it matches the EU. The old Cummings and other diesel trucks would continue to down shift uphill and the low flow turbo helped. High psi turbo can peak hp but cut engine life. My son had a full race cam gas v8 the life was about 500 miles and dead eng.

 

[Kyle_in_Tex]

Kyle does your tractor move at all at idle in power match mode? Mine did not until you hit about 1500-1800 rpm

No, it won't work until you get up to full power rpms.

 

[tschwerm]

Great news tractor is back, they found the throttle speed sensor loose and it had rotated 180 out of position.

They upgrade all the current codes in my module and did not charge me.
They felt the sensor was loose from the last time they serviced the tractor.

 

[chevyman29]

glad to hear that lets hope it stays working right for you !!!