Massey Ferguson 1740M Hydro: LOSS OF POWER when hot!

[Bavarian]

seeing as how the tractor that this topic applies to uses a turbo, as well as def, prob better to start a new topic as NOTHING in thread would apply to you.
for the record (been there on a GC1710) look at your fuel system pressures. a collapsing hose causes a crapload of issues.

No tractor in this discussion has DEF.

 

[Dmacleo]

No tractor in this discussion has DEF.

you are correct. I made an error.

still, does not change the fact a person with a GC series tractor should start a separate thread.

 

[Yander]

 

[Bavarian]

you are correct. I made an error.

still, does not change the fact a person with a GC series tractor should start a separate thread.

Absolutely agree on that.

 

[Mark 1735m]

Today is my first day looking at this forum. I have a 2019 1735M cab tractor belly mower with the same problem exactly. returned it to local Massey dealer two years ago, but still having the same problem.

 

[Yander]

Has anyone considered pulling the turbo off and pulling it apart to check it's condition and perhaps rebuilding it. I don't know how involved or difficult this would be but I'm considering doing it.

 

[JWR]

Has anyone considered pulling the turbo off and pulling it apart to check it's condition and perhaps rebuilding it. I don't know how involved or difficult this would be but I'm considering doing it.

• [Surely] no one is going to tackle turbo disassembly not knowing what the cause of these (many) cases turns out to be
• With so many sets of near identical symptoms SOMEBODY is going to solve this to benefit us all
• I cannot believe all the various dealers involved are going to get away with failing to solve the problem much longer
• most of us would be nuts to start disassembly of a turbo. Very expensive new or even rebuilt by the mfr. Chinese rebuilds are hundreds of dollars too, wildly variable, and similar to a crap shoot.
• sure glad I'm not one trying to make a living on one of these machines...

 

[Yander]

• [Surely] no one is going to tackle turbo disassembly not knowing what the cause of these (many) cases turns out to be
• With so many sets of near identical symptoms SOMEBODY is going to solve this to benefit us all
• I cannot believe all the various dealers involved are going to get away with failing to solve the problem much longer
• most of us would be nuts to start disassembly of a turbo. Very expensive new or even rebuilt by the mfr. Chinese rebuilds are hundreds of dollars too, wildly variable, and similar to a crap shoot.
• sure glad I'm not one trying to make a living on one of these machines...

Well, the one guy I have read that solved this problem after his dealer went through everything else including new injectors etc. etc. and multiple trips to that dealer. Finally MF sent him a new Turbo charger and it appears it resolved the issue. He was on MyTractorForum I linked his thread earlier in this thread.

I don't make a living with the tractor and I have other tractors. I also don't have a lot of time to be messing with a dealer who wants to try everything under the sun and still not fix the issue. I don't live near a dealer either but I think I can manage bolting on a new turbo charger. It is about $2k for a new turbo charger. I haven't decided if I'm going to take on that task but I just might pull it off and take it apart just to see what it looks like.

 

[WranglerX]

Since turbos spin at extremely high RPM it requires really good bearings and good lube oil flow, has anybody check turbo drain line to see if there is adequate oil flow to bearing and out drain?

 

[Brad 1735M]

Hey there first time posting got this problem also. When this happens on my 2019 1735M hydro it gets to a point where it will stall right out and stop the engine - even sitting still and no pto etc. Seems like the fuel is getting cut so I'm going to try replacing the SCV valve in the fuel pump and see if that helps, and I'll report back hopefully this weekend. I replaced the lift pump and that did nothing.

Update - unfortunately the scv valve did not help. This is very frustrating

 

[TopSpeed1]

Just an over-the-Summer update.... It was bad all summer (meaning after 30 or so minutes of mowing with the A/C on) it would have this power loss and no throttle response. HOWEVER!, now in the early Fall mowings with no A/C and much cooler temps (I actually have the back window open for air..... It has been WAY better, like I can go well over an hour with no sluggishness. On my last mowing, it was 52F, breezy and I mowed for almost 2 hrs with no issue; meaning I even had head room on the throttle mowing at the kept 540RPM's. So there is no question in my mind that this is related to heat, I'm not sure how or why, but the hot weather definitely kicks this in sooner or quicker, and, the A/C on accelerates it.

 

[JWR]

Just an over-the-Summer update.... It was bad all summer (meaning after 30 or so minutes of mowing with the A/C on) it would have this power loss and no throttle response. HOWEVER!, now in the early Fall mowings with no A/C and much cooler temps (I actually have the back window open for air..... It has been WAY better, like I can go well over an hour with no sluggishness. On my last mowing, it was 52F, breezy and I mowed for almost 2 hrs with no issue; meaning I even had head room on the throttle mowing at the kept 540RPM's. So there is no question in my mind that this is related to heat, I'm not sure how or why, but the hot weather definitely kicks this in sooner or quicker, and, the A/C on accelerates it.

As much as this has been beat on it remains baffling. Someone's gotta solve it. No more comment from the dealer !? This really falls on AGCO to get to the bottom of it.

 

[Dmacleo]

really (to me) now sounding like an ecm parameter issue.

 

[DanBick]

Just to expand on the "related to heat" issue...I had a JD 3038e that would always, always start perfectly from a cold start. At normal run temperature it might or might not start on a mild to warm day. On a hot day it simply would not engage the starter when at normal run temperature. After it sat for 15-20 minutes it would start. No one ever found the problem or solution and I traded it for a MF 1840M and have lived happily ever after.

 

[TopSpeed1]

With this power-loss issue, I can restart my MF 1740M at anytime, even after the direct power loss. If I let the engine cool down like more than an hour, I will get full power, but for like a much shorter duration than the original start time, but full power does come back albeit for maybe 10 minutes. I believe it has to be put on a dyno or a 3pt hitch load, run under load while hooked up to the Agco diagnostic software. I truly appreciate the process of elimination going on with others here, and, you may get it solved, but this process is timely and pricey. I can state right now, Agco/MF must know of this issue as here, another Forum and my Youtube video we have had SEVERAL owners come forward with the same power loss issue. If we drop in the complaining little peons like us, then they (Agco) must clearly know of this issue as well. Maybe they are lining up a recall and the logistics thereof, but clearly there is a problem in some mechanical or engineering on an engine or fuel related component(s).

 

[Dmacleo]

throughout all of this did anyone test/replace the ECT? actual engine coolant temp sensor, not sending unit for gauge. question asked under assumption its like automotive/truck and 2 distinct units.
dealt with some fords in mid 1990 to early 2000s that had similar (not exactly same) issues, ect or act (air charge temp) often issue.

 

[LouNY]

I don't recall if it was ever asked or mentioned, where is the ECM mounted could it be easily relocated to a physically cooler location? Is there a heat sink which it is mounted to? has anyone added a fan to cool it a bit more?

 

[FrankJG]

Update from my post of July 25th. Been busy at work didnt had time to took care of that problem since now.

I road the tractor to my dealership 15 miles from home. They put it on the dyno and were able to recreate the problem. They came with the conclusion of bad injectors. New ones are ordered and they will test it again on the dyno after they change them to see if the problem persists. I'll try to keep you updated sooner this time.

 

[Yander]

Interesting, please do report back

 

[JWR]

This is a profound, if not colossal, finding. Because... so many users of not only MF tractors, not only 1740M but others have reported this SAME DISEASE in the life of this thread. I think there are multiple threads on the issue as well. Does the tractor world have THAT MANY "bad injectors?' If we do, this is major news to the tractor world... needs 100% confirmed and if true needs huge publicity.